CVE-2026-53221
published 2026-06-25CVE-2026-53221: In the Linux kernel, the following vulnerability has been resolved: ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup() In vti6_tnl_lookup(), when an…
PriorityP353critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.58%
47.3th percentile
In the Linux kernel, the following vulnerability has been resolved:
ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
In vti6_tnl_lookup(), when an exact match for a tunnel fails,
the code falls back to searching for wildcard tunnels:
- Tunnels matching the packet's local address, with any remote address
wildcard remote).
- Tunnels matching the packet's remote address, with any local address
(wildcard local).
However, vti6 stores all these different types of tunnels in the same
hash table (ip6n->tnls_r_l) prone to hash collisions.
The bug is that the fallback search loops in vti6_tnl_lookup() were
missing checks to ensure that the candidate tunnel actually has
a wildcard address.
Affected
80 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 < c327fa4fca31415431202e063767a7ae342e19c6 | c327fa4fca31415431202e063767a7ae342e19c6 |
| linux | linux | >= fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 < fc657ac0767c49839b3ef0b08dc0953ca30883f8 | fc657ac0767c49839b3ef0b08dc0953ca30883f8 |
| linux | linux | >= fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 < 47fb3c2b4203556308e64354b3e78f2ce221d646 | 47fb3c2b4203556308e64354b3e78f2ce221d646 |
| linux | linux | >= fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 < f513f308cc4bdb4530d033431592ffbc29b7fca1 | f513f308cc4bdb4530d033431592ffbc29b7fca1 |
| linux | linux | >= fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 < 90fd4513315ca07da99cfd8549d3e553a7160f0d | 90fd4513315ca07da99cfd8549d3e553a7160f0d |
| linux | linux | >= fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 < 2abfb19bbb81958714ad1d43ebeb65b30394184b | 2abfb19bbb81958714ad1d43ebeb65b30394184b |
| linux | linux | >= fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 < 2fc7bc087cc7085368263d9d37bfe9a0bddd6a2d | 2fc7bc087cc7085368263d9d37bfe9a0bddd6a2d |
| linux | linux | >= fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 < a5c0359f5cbc51a2e2b114d6041e0f3c73f903e9 | a5c0359f5cbc51a2e2b114d6041e0f3c73f903e9 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 3.19 < 5.10.259 | 5.10.259 |
| linux | linux_kernel | >= 5.11 < 5.15.210 | 5.15.210 |
| linux | linux_kernel | >= 5.16 < 6.1.176 | 6.1.176 |
| linux | linux_kernel | >= 6.13 < 6.18.36 | 6.18.36 |
| linux | linux_kernel | >= 6.19 < 7.0.13 | 7.0.13 |
| linux | linux_kernel | >= 6.2 < 6.6.143 | 6.6.143 |
| linux | linux_kernel | >= 6.7 < 6.12.94 | 6.12.94 |
| ubuntu | linux | — | — |
| ubuntu | linux-aws | — | — |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_ubuntu9.4CRITICAL
vendor_redhat5.5MEDIUM
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Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2026-10-15·CVSS 7.8
CVE-2024-53214 [HIGH] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- S390 architecture;
- IIO ADC drivers;
- Multiple devices driver;
- PCI subsystem;
- VFIO drivers;
- Network file system (NFS) server daemon;
- Overlay file system;
- IPv6 networking;
- Netfilter;
(CVE-2024-53194, CVE-2024-53214, CVE-2024-56570, CVE-2024-56779,
CVE-2024-57849, CVE-2024-57904, CVE-2024-57929, CVE-2025-21664,
CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to a
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-10-13·CVSS 4.7
CVE-2022-49149 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Ethernet bonding driver;
- Network drivers;
- F2FS file system;
- Network file system (NFS) server daemon;
- Tracing infrastructure;
- io_uring subsystem;
- Networking core;
- IPv6 networking;
- IUCV driver;
- Netfilter;
- RxRPC session sockets;
(CVE-2022-49149, CVE-2022-49170, CVE-2022-49182, CVE-2022-49201,
CVE-2024-53187, CVE-2024-53210, CVE-2024-56763, CVE-2025-38724,
CVE-2026-43456, CVE-2026-52910, CVE-2026-53131, CVE-2026-53221)
Instructions: After a standard system update you need to reboot your comput
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2026-10-13·CVSS 7.8
CVE-2024-53214 [HIGH] Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- S390 architecture;
- IIO ADC drivers;
- Multiple devices driver;
- PCI subsystem;
- VFIO drivers;
- Network file system (NFS) server daemon;
- Overlay file system;
- IPv6 networking;
- Netfilter;
(CVE-2024-53194, CVE-2024-53214, CVE-2024-56570, CVE-2024-56779,
CVE-2024-57849, CVE-2024-57904, CVE-2024-57929, CVE-2025-21664,
CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to
Ubuntu
Linux kernel (IBM) vulnerabilities
vendor_ubuntu·2026-10-08·CVSS 9.1
CVE-2026-64087 [CRITICAL] Linux kernel (IBM) vulnerabilities
Title: Linux kernel (IBM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- ARM32 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Intel NPU Driver;
-
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2026-10-06·CVSS 5.5
CVE-2026-31711 [MEDIUM] Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the i.MX clock driver in the Linux kernel did not
properly handle certain memory allocation failure conditions, leading to a
null pointer dereference vulnerability. A local attacker could possibly use
this to cause a denial of service (system crash). (CVE-2022-3114)
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security
Ubuntu
Linux kernel (GCP) vulnerabilities
vendor_ubuntu·2026-10-06·CVSS 5.5
CVE-2026-31711 [MEDIUM] Linux kernel (GCP) vulnerabilities
Title: Linux kernel (GCP) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the i.MX clock driver in the Linux kernel did not
properly handle certain memory allocation failure conditions, leading to a
null pointer dereference vulnerability. A local attacker could possibly use
this to cause a denial of service (system crash). (CVE-2022-3114)
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security is
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2026-10-05·CVSS 7.8
CVE-2026-53221 [HIGH] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Network file system (NFS) server daemon;
- IPv6 networking;
- Netfilter;
(CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities
vendor_ubuntu·2026-10-05·CVSS 9.1
CVE-2026-53354 [CRITICAL] Linux kernel (Raspberry Pi) vulnerabilities
Title: Linux kernel (Raspberry Pi) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- InfiniBand drivers;
- Network drivers;
- TCM subsystem;
- exFAT file system;
- Network file syste
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities
vendor_ubuntu·2026-10-02·CVSS 7.8
CVE-2026-53131 [HIGH] Linux kernel (Raspberry Pi) vulnerabilities
Title: Linux kernel (Raspberry Pi) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Network file system (NFS) server daemon;
- IPv6 networking;
- Netfilter;
(CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapac
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-10-02·CVSS 7.8
CVE-2026-53131 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Network file system (NFS) server daemon;
- IPv6 networking;
- Netfilter;
(CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. lin
Ubuntu
Linux kernel (FIPS) vulnerabilities
vendor_ubuntu·2026-10-02·CVSS 9.1
CVE-2026-53354 [CRITICAL] Linux kernel (FIPS) vulnerabilities
Title: Linux kernel (FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- InfiniBand drivers;
- Network drivers;
- TCM subsystem;
- exFAT file system;
- Network file system (NFS)
Ubuntu
Linux kernel (FIPS) vulnerabilities
vendor_ubuntu·2026-09-30·CVSS 7.8
CVE-2025-38724 [HIGH] Linux kernel (FIPS) vulnerabilities
Title: Linux kernel (FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Network file system (NFS) server daemon;
- IPv6 networking;
- Netfilter;
(CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e
Ubuntu
Linux kernel (NVIDIA Tegra) vulnerabilities
vendor_ubuntu·2026-09-30·CVSS 9.1
CVE-2026-53354 [CRITICAL] Linux kernel (NVIDIA Tegra) vulnerabilities
Title: Linux kernel (NVIDIA Tegra) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- InfiniBand drivers;
- Network drivers;
- TCM subsystem;
- exFAT file system;
- Network file syste
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2026-09-30·CVSS 9.1
CVE-2026-63886 [CRITICAL] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- InfiniBand drivers;
- Network drivers;
- TCM subsystem;
- B.A.T.M.A.N. meshing protocol;
- HSR network pro
Ubuntu
Linux kernel (NVIDIA Tegra) vulnerabilities
vendor_ubuntu·2026-09-30·CVSS 9.1
CVE-2025-10263 [CRITICAL] Linux kernel (NVIDIA Tegra) vulnerabilities
Title: Linux kernel (NVIDIA Tegra) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- InfiniBand drivers;
- Network drivers;
- TCM subsystem;
- exFAT file system;
- Network file syste
Ubuntu
Linux kernel (BlueField) vulnerabilities
vendor_ubuntu·2026-09-30·CVSS 7.8
CVE-2026-53221 [HIGH] Linux kernel (BlueField) vulnerabilities
Title: Linux kernel (BlueField) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Network file system (NFS) server daemon;
- OCFS2 file system;
- IPv6 networking;
- Netfilter;
- SCTP protocol;
(CVE-2025-38724, CVE-2026-53043, CVE-2026-53131, CVE-2026-53221,
CVE-2026-53224, CVE-2026-53225, CVE-2026-53246, CVE-2026-53309)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall a
Ubuntu
Linux kernel (AWS FIPS) vulnerabilities
vendor_ubuntu·2026-09-30·CVSS 9.1
CVE-2026-63886 [CRITICAL] Linux kernel (AWS FIPS) vulnerabilities
Title: Linux kernel (AWS FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- InfiniBand drivers;
- Network drivers;
- TCM subsystem;
- B.A.T.M.A.N. meshing protocol;
- HSR networ
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2026-09-29·CVSS 9.1
CVE-2026-64191 [CRITICAL] Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
Several security issues were d
Ubuntu
Linux kernel (NVIDIA) vulnerabilities
vendor_ubuntu·2026-09-29·CVSS 9.4
CVE-2026-63887 [CRITICAL] Linux kernel (NVIDIA) vulnerabilities
Title: Linux kernel (NVIDIA) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- InfiniBand drivers;
- Network drivers;
- TCM subsystem;
- B.A.T.M.A.N. meshing protocol;
- HSR network protocol;
- IPv4 networking;
- IPv6 networking;
- Netfilter;
- RDS protocol;
(CVE-2026-53131, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221,
CVE-2026-53355, CVE-2026-63886, CVE-2026-63887, CVE-2026-63888,
CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984,
CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64000,
CVE-2026-64007, CVE-2026-64091)
Instructions: After a standard syste
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-09-29·CVSS 7.8
CVE-2026-53221 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Network file system (NFS) server daemon;
- IPv6 networking;
- Netfilter;
(CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. lin
Ubuntu
Linux kernel (IBM) vulnerabilities
vendor_ubuntu·2026-09-25·CVSS 9.1
CVE-2026-63912 [CRITICAL] Linux kernel (IBM) vulnerabilities
Title: Linux kernel (IBM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- InfiniBand drivers;
- Network drivers;
- TCM subsystem;
- exFAT file system;
- Network file system (NFS) c
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-09-25·CVSS 7.8
CVE-2025-38724 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Network file system (NFS) server daemon;
- IPv6 networking;
- Netfilter;
(CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. lin
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-09-24·CVSS 9.1
CVE-2026-63886 [CRITICAL] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- InfiniBand drivers;
- Network drivers;
- TCM subsystem;
- B.A.T.M.A.N. meshing protocol;
- HSR network protocol;
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-09-24·CVSS 9.1
CVE-2026-63912 [CRITICAL] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- InfiniBand drivers;
- Network drivers;
- TCM subsystem;
- exFAT file system;
- Network file system (NFS) client;
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2026-09-22·CVSS 9.1
CVE-2026-52938 [CRITICAL] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
Several security issues were di
Ubuntu
Linux kernel (NVIDIA Tegra) vulnerabilities
vendor_ubuntu·2026-09-18·CVSS 9.1
CVE-2026-53358 [CRITICAL] Linux kernel (NVIDIA Tegra) vulnerabilities
Title: Linux kernel (NVIDIA Tegra) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- User-space API (UAPI);
- Kernel build system;
- ARM32 architecture;
- PowerPC architecture;
- RIS
Ubuntu
Linux kernel (GCP) vulnerabilities
vendor_ubuntu·2026-09-07·CVSS 9.1
CVE-2026-52938 [CRITICAL] Linux kernel (GCP) vulnerabilities
Title: Linux kernel (GCP) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
Several security issues were disc
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-08-20·CVSS 7.8
CVE-2026-64531 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 architecture;
- InfiniBand drivers;
- Network drivers;
- Network traffic control;
- IPv4 networking;
- IPv6 networking;
- Netfilter;
- Open vSwitch;
- RxRPC session sockets;
- SCTP protocol;
(CVE-2026-46331, CVE-2026-52924, CVE-2026-53131, CVE-2026-53151,
CVE-2026-53175, CVE-2026-53176, CVE-2026-53186, CVE-2026-53212,
CVE-2026-53215, CVE-2026-53216, CVE-2026-53221, CVE-2026-53224,
CVE-2026-53225, CVE-2026-53228, CVE-2026-53246, CVE-2026-53247,
CVE-2026-53260, CVE-2026-53359, CVE-2026-64531)
Instructions:
Ubuntu
Linux kernel (NVIDIA) vulnerabilities
vendor_ubuntu·2026-08-20·CVSS 7.0
CVE-2026-64234 [HIGH] Linux kernel (NVIDIA) vulnerabilities
Title: Linux kernel (NVIDIA) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 platform drivers;
- Cryptographic API;
- PSP security protocol;
- ARM32 architecture;
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- User-Mode Linux (UML);
- x
Ubuntu
Linux kernel (NVIDIA BaseOS) vulnerabilities
vendor_ubuntu·2026-08-20·CVSS 7.0
CVE-2026-64109 [HIGH] Linux kernel (NVIDIA BaseOS) vulnerabilities
Title: Linux kernel (NVIDIA BaseOS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that some AMD Zen 2 processors did not properly isolate
shared resources in the operation cache. A local attacker could possibly
use this issue to corrupt instructions executed at a higher privilege
level, resulting in privilege escalation. (CVE-2025-54518)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 platform drivers;
- Cryptographic API;
- PSP security protocol;
- ARM32 architecture;
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- User-Mode Linux (UM
Ubuntu
Linux kernel (HWE) vulnerabilities
vendor_ubuntu·2026-08-18·CVSS 7.8
CVE-2026-53131 [HIGH] Linux kernel (HWE) vulnerabilities
Title: Linux kernel (HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 architecture;
- InfiniBand drivers;
- Network drivers;
- Network traffic control;
- IPv4 networking;
- IPv6 networking;
- Netfilter;
- RxRPC session sockets;
- SCTP protocol;
(CVE-2026-46331, CVE-2026-52924, CVE-2026-53131, CVE-2026-53151,
CVE-2026-53175, CVE-2026-53176, CVE-2026-53186, CVE-2026-53212,
CVE-2026-53215, CVE-2026-53216, CVE-2026-53221, CVE-2026-53224,
CVE-2026-53225, CVE-2026-53228, CVE-2026-53246, CVE-2026-53247,
CVE-2026-53260, CVE-2026-53359)
Instructions: After a standard system up
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2026-08-17·CVSS 7.8
CVE-2026-53225 [HIGH] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 architecture;
- InfiniBand drivers;
- Network drivers;
- Network traffic control;
- IPv4 networking;
- IPv6 networking;
- Netfilter;
- RxRPC session sockets;
- SCTP protocol;
(CVE-2026-46331, CVE-2026-52924, CVE-2026-53131, CVE-2026-53151,
CVE-2026-53175, CVE-2026-53176, CVE-2026-53186, CVE-2026-53212,
CVE-2026-53215, CVE-2026-53216, CVE-2026-53221, CVE-2026-53224,
CVE-2026-53225, CVE-2026-53228, CVE-2026-53246, CVE-2026-53247,
CVE-2026-53260, CVE-2026-53359)
Instructions: After a standard system up
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2026-08-13·CVSS 7.8
CVE-2026-53216 [HIGH] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 architecture;
- InfiniBand drivers;
- Network drivers;
- Thunderbolt and USB4 drivers;
- Network traffic control;
- IPv4 networking;
- IPv6 networking;
- Netfilter;
- RxRPC session sockets;
- SCTP protocol;
(CVE-2026-46331, CVE-2026-52924, CVE-2026-53131, CVE-2026-53146,
CVE-2026-53147, CVE-2026-53148, CVE-2026-53149, CVE-2026-53150,
CVE-2026-53151, CVE-2026-53175, CVE-2026-53176, CVE-2026-53186,
CVE-2026-53212, CVE-2026-53215, CVE-2026-53216, CVE-2026-53221,
CVE-2026-53224, CVE-2026-53225, CVE-2026-
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-08-12·CVSS 7.8
CVE-2026-53215 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- x86 architecture;
- InfiniBand drivers;
- Network drivers;
- Network traffic control;
- IPv4 networking;
- IPv6 networking;
- Netfilter;
- RxRPC session sockets;
- SCTP protocol;
(CVE-2026-46331, CVE-2026-52924, CVE-2026-53131, CVE-2026-53151,
CVE-2026-53175, CVE-2026-53176, CVE-2026-53186, CVE-2026-53212,
CVE-2026-53215, CVE-2026-53216, CVE-2026-53221, CVE-2026-53224,
CVE-2026-53225, CVE-2026-53228, CVE-2026-53246, CVE-2026-53247,
CVE-2026-53260, CVE-2026-53359)
Instructions: After a standard system update y
Red Hat
kernel: ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
vendor_redhat·2026-06-25·CVSS 5.5
CVE-2026-53221 [MEDIUM] CWE-1289 kernel: ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
kernel: ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
A flaw was found in the Linux kernel, specifically within the `ip6_vti` component responsible for managing IPv6 tunnels. This vulnerability arises from an error in the `vti6_tnl_lookup()` function, which incorrectly matches network tunnels by failing to properly verify wildcard addresses during fallback searches. This can lead to network traffic being misdirected or dropped, potentially disrupting network services. The underlying cause is a lack of checks to confirm that a candidate tunnel indeed has a wildcard address.
GHSA
In the Linux kernel, the following vulnerability has been resolved: ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup() In vti6_tnl_lookup(), when an exact match for a tunnel fails, the code
ghsa_unreviewed·2026-06-25
CVE-2026-53221 In the Linux kernel, the following vulnerability has been resolved: ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup() In vti6_tnl_lookup(), when an exact match for a tunnel fails, the code
In the Linux kernel, the following vulnerability has been resolved:
ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
In vti6_tnl_lookup(), when an exact match for a tunnel fails,
the code falls back to searching for wildcard tunnels:
- Tunnels matching the packet's local address, with any remote address
wildcard remote).
- Tunnels matching the packet's remote address, with any local address
(wildcard local).
However, vti6 stores all these different types of tunnels in the same
hash table (ip6n->tnls_r_l) prone to hash collisions.
The bug is that the fallback search loops in vti6_tnl_lookup() were
missing checks to ensure that the candidate tunnel actually has
a wildcard address.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/2abfb19bbb81958714ad1d43ebeb65b30394184bhttps://git.kernel.org/stable/c/2fc7bc087cc7085368263d9d37bfe9a0bddd6a2dhttps://git.kernel.org/stable/c/47fb3c2b4203556308e64354b3e78f2ce221d646https://git.kernel.org/stable/c/90fd4513315ca07da99cfd8549d3e553a7160f0dhttps://git.kernel.org/stable/c/a5c0359f5cbc51a2e2b114d6041e0f3c73f903e9https://git.kernel.org/stable/c/c327fa4fca31415431202e063767a7ae342e19c6https://git.kernel.org/stable/c/f513f308cc4bdb4530d033431592ffbc29b7fca1https://git.kernel.org/stable/c/fc657ac0767c49839b3ef0b08dc0953ca30883f8https://cert-portal.siemens.com/productcert/html/ssa-784472.html
2026-06-25
Published