CVE-2026-31682
published 2026-04-25CVE-2026-31682: In the Linux kernel, the following vulnerability has been resolved: bridge: br_nd_send: linearize skb before parsing ND options br_nd_send() parses neighbour…
PriorityP353critical9.1CVSS 3.1
AVNACLPRNUINSUCHINAH
EPSS
0.48%
39.0th percentile
In the Linux kernel, the following vulnerability has been resolved:
bridge: br_nd_send: linearize skb before parsing ND options
br_nd_send() parses neighbour discovery options from ns->opt[] and
assumes that these options are in the linear part of request.
Its callers only guarantee that the ICMPv6 header and target address
are available, so the option area can still be non-linear. Parsing
ns->opt[] in that case can access data past the linear buffer.
Linearize request before option parsing and derive ns from the linear
network header.
Affected
70 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= ed842faeb2bd49256f00485402f3113205f91d30 < c68433fd291c9e88c00292095172c62d1997d662 | c68433fd291c9e88c00292095172c62d1997d662 |
| linux | linux | >= ed842faeb2bd49256f00485402f3113205f91d30 < 4f397b950c916e9a1f8a4fce04ea0110206cad47 | 4f397b950c916e9a1f8a4fce04ea0110206cad47 |
| linux | linux | >= ed842faeb2bd49256f00485402f3113205f91d30 < bd91ec85aa4c77d645bd2739fc56784157a88ca2 | bd91ec85aa4c77d645bd2739fc56784157a88ca2 |
| linux | linux | >= ed842faeb2bd49256f00485402f3113205f91d30 < 658261898130da620fc3d0fbb0523efb3366cb55 | 658261898130da620fc3d0fbb0523efb3366cb55 |
| linux | linux | >= ed842faeb2bd49256f00485402f3113205f91d30 < 2ba4caba423ed94d63006eb1d2227b0332ab7fcd | 2ba4caba423ed94d63006eb1d2227b0332ab7fcd |
| linux | linux | >= ed842faeb2bd49256f00485402f3113205f91d30 < 9c55e41c73af5c4511070933b1bd25248521270c | 9c55e41c73af5c4511070933b1bd25248521270c |
| linux | linux | >= ed842faeb2bd49256f00485402f3113205f91d30 < 3a30f6469b058574f49efde61cd6f5d79e576053 | 3a30f6469b058574f49efde61cd6f5d79e576053 |
| linux | linux | >= ed842faeb2bd49256f00485402f3113205f91d30 < a01aee7cafc575bb82f5529e8734e7052f9b16ea | a01aee7cafc575bb82f5529e8734e7052f9b16ea |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 4.15 < 5.10.253 | 5.10.253 |
| linux | linux_kernel | >= 5.11 < 5.15.203 | 5.15.203 |
| linux | linux_kernel | >= 5.16 < 6.1.168 | 6.1.168 |
| linux | linux_kernel | >= 6.13 < 6.18.22 | 6.18.22 |
| linux | linux_kernel | >= 6.19 < 6.19.12 | 6.19.12 |
| linux | linux_kernel | >= 6.2 < 6.6.134 | 6.6.134 |
| linux | linux_kernel | >= 6.7 < 6.12.81 | 6.12.81 |
| ubuntu | linux | — | — |
| ubuntu | linux-aws | — | — |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
vendor_ubuntu8.8HIGH
vendor_redhat7.0MEDIUM
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attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284)
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subsystem in the Linux kernel when handling socket buffer fragments. This
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- x86 platform drivers;
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- SPI subsystem;
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- STMicroelectronics network drivers;
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- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
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- Ublk userspace block driver;
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- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
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- InfiniBand drivers;
- IOMMU subsystem;
- Network drivers;
- STMicroelectronics network drivers;
- NVME drivers;
- x86 platform drivers;
- SCSI subsystem;
- SPI subsystem;
- TCM subsystem;
- USB over IP driver;
- File systems infrastructure;
- HFS+ file system;
- Network file system (NFS) server daemon;
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Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000)
It was discovered that a logic flaw existed in the XFRM ESP-in-TCP
subsystem in the Linux kernel when handling socket buffer fragments. This
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Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel algif_aead module did not properly
handle in-place cryptographic operations. This flaw is known as Copy Fail.
A local attacker could use this to escalate privileges, or possibly escape
a container. (CVE-2026-31431)
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardwar
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- RISC-V architecture;
- Cryptographic API;
- InfiniBand drivers;
- IOMMU subsystem;
- Network drivers;
- STMicroelectronics network drivers;
- NVME drivers;
- x86 platform drivers;
- SCSI subsystem;
- SPI subsystem;
- TCM subsystem;
- USB over IP driver;
- File systems infrastructure;
- HFS+ file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- IPv6 networking;
- Tracing infrastructure;
- Timer subsystem;
- B.A.T.M.A.N. meshing protocol;
- Bluetooth subsystem;
- Ethernet bridge;
-
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CVE-2026-43226 Linux kernel vulnerabilities
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Summary: Several security issues were fixed in the Linux kernel.
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware monitoring dr
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CVE-2026-43304 [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:
- ARM64 architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- DMA engine subsystem;
- InfiniBand drivers;
- STMicroelectronics network drivers;
- Network drivers;
- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
- File systems infrastructure;
- Ext4 file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- Kernel thread helper (kthread);
- IPv6 networking;
- Tracing infrastructure;
- Kernel exit() syscall;
- Scatterlist API;
- B.A.T.M.A.N. meshi
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-07-01·CVSS 7.1
CVE-2026-43304 [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:
- ARM64 architecture;
- Block layer subsystem;
- Cryptographic API;
- DMA engine subsystem;
- InfiniBand drivers;
- STMicroelectronics network drivers;
- Network drivers;
- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
- File systems infrastructure;
- Ext4 file system;
- Network file system (NFS) server daemon;
- SMB network file system;
- Kernel thread helper (kthread);
- IPv6 networking;
- Tracing infrastructure;
- Kernel exit() syscall;
- Scatterlist API;
- B.A.T.M.A.N. meshing protocol;
- Ethernet br
Red Hat
kernel: bridge: br_nd_send: linearize skb before parsing ND options
vendor_redhat·2026-04-25·CVSS 7.0
CVE-2026-31682 [MEDIUM] CWE-788 kernel: bridge: br_nd_send: linearize skb before parsing ND options
kernel: bridge: br_nd_send: linearize skb before parsing ND options
In the Linux kernel, the following vulnerability has been resolved:
bridge: br_nd_send: linearize skb before parsing ND options
br_nd_send() parses neighbour discovery options from ns->opt[] and
assumes that these options are in the linear part of request.
Its callers only guarantee that the ICMPv6 header and target address
are available, so the option area can still be non-linear. Parsing
ns->opt[] in that case can access data past the linear buffer.
Linearize request before option parsing and derive ns from the linear
network header.
A flaw was found in the Linux kernel's bridge component. This vulnerability occurs because the system does not properly prepare network packet data before processing Neighbor Discovery (ND
VulDB
Linux Kernel up to 6.19.11 br_nd_send opt[] buffer overflow (EUVD-2026-25649)
vuldb·2026-04-25
CVE-2026-31682 [CRITICAL] Linux Kernel up to 6.19.11 br_nd_send opt[] buffer overflow (EUVD-2026-25649)
A vulnerability has been found in Linux Kernel up to 6.19.11 and classified as critical. Affected by this vulnerability is the function br_nd_send. The manipulation of the argument opt[] leads to buffer overflow.
This vulnerability is traded as CVE-2026-31682. Access to the local network is required for this attack to succeed. There is no exploit available.
The affected component should be upgraded.
GHSA
GHSA-r8hp-cx2w-5c4r: In the Linux kernel, the following vulnerability has been resolved:
bridge: br_nd_send: linearize skb before parsing ND options
br_nd_send() parses
ghsa_unreviewed·2026-04-25
CVE-2026-31682 [CRITICAL] GHSA-r8hp-cx2w-5c4r: In the Linux kernel, the following vulnerability has been resolved:
bridge: br_nd_send: linearize skb before parsing ND options
br_nd_send() parses
In the Linux kernel, the following vulnerability has been resolved:
bridge: br_nd_send: linearize skb before parsing ND options
br_nd_send() parses neighbour discovery options from ns->opt[] and
assumes that these options are in the linear part of request.
Its callers only guarantee that the ICMPv6 header and target address
are available, so the option area can still be non-linear. Parsing
ns->opt[] in that case can access data past the linear buffer.
Linearize request before option parsing and derive ns from the linear
network header.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcdhttps://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270chttps://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16eahttps://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
2026-04-25
Published