CVE-2026-23272
published 2026-03-20CVE-2026-23272: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: unconditionally bump set->nelems before insertion In case that the…
PriorityP336high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.12%
2.5th percentile
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: unconditionally bump set->nelems before insertion
In case that the set is full, a new element gets published then removed
without waiting for the RCU grace period, while RCU reader can be
walking over it already.
To address this issue, add the element transaction even if set is full,
but toggle the set_full flag to report -ENFILE so the abort path safely
unwinds the set to its previous state.
As for element updates, decrement set->nelems to restore it.
A simpler fix is to call synchronize_rcu() in the error path.
However, with a large batch adding elements to already maxed-out set,
this could cause noticeable slowdown of such batches.
Affected
70 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.19.8-1 (forky) | linux 6.19.8-1 (forky) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 35d0ac9070ef619e3bf44324375878a1c540387b < 25fcaef7948912652905e96922f36583a84fffed | 25fcaef7948912652905e96922f36583a84fffed |
| linux | linux | >= 35d0ac9070ef619e3bf44324375878a1c540387b < e3ccb11fc8249759d23326038c8db987ddaabc77 | e3ccb11fc8249759d23326038c8db987ddaabc77 |
| linux | linux | >= 35d0ac9070ef619e3bf44324375878a1c540387b < 86bc4b1a0f672d47ac19f9022432cb6a2e01cb33 | 86bc4b1a0f672d47ac19f9022432cb6a2e01cb33 |
| linux | linux | >= 35d0ac9070ef619e3bf44324375878a1c540387b < 6826131c7674329335ca25df2550163eb8a1fd0c | 6826131c7674329335ca25df2550163eb8a1fd0c |
| linux | linux | >= 35d0ac9070ef619e3bf44324375878a1c540387b < ccb8c8f3c1127cf34d18c737309897c68046bf21 | ccb8c8f3c1127cf34d18c737309897c68046bf21 |
| linux | linux | >= 35d0ac9070ef619e3bf44324375878a1c540387b < def602e498a4f951da95c95b1b8ce8ae68aa733a | def602e498a4f951da95c95b1b8ce8ae68aa733a |
| linux | linux | >= 4.9.33 < 4.10 | 4.10 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.19.8-1 | 6.19.8-1 |
| linux | linux_kernel | >= 4.10.0 < 6.18.17 | 6.18.17 |
| linux | linux_kernel | >= 4.10.1 < 6.18.17 | 6.18.17 |
| linux | linux_kernel | >= 4.9.33 < 4.10 | 4.10 |
| linux | linux_kernel | >= 6.19 < 6.19.7 | 6.19.7 |
| linux | linux_kernel | >= 6.19.0 < 6.19.7 | 6.19.7 |
| msrc | azl3_kernel_6.6.126.1-1_on_azure_linux_3.0 | — | — |
| ubuntu | linux | — | — |
| ubuntu | linux-aws | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
vendor_msrc6.4MEDIUM
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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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- Clocksource drivers;
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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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- GPU drivers;
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- NVME drivers;
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An attacker could possibly use these to compromise the system.
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- 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;
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- InfiniBand drivers;
- IOMMU subsystem;
- Network drivers;
- STMicroelectronics network drivers;
- NVME drivers;
- x86 platform drivers;
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- USB over IP driver;
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It was discovered that the Linux kernel did not properly handle shared page
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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)
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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;
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- HID subsystem;
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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;
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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
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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: netfilter: nf_tables: unconditionally bump set->nelems before insertion
vendor_redhat·2026-03-20·CVSS 7.8
CVE-2026-23272 [HIGH] CWE-367 kernel: netfilter: nf_tables: unconditionally bump set->nelems before insertion
kernel: netfilter: nf_tables: unconditionally bump set->nelems before insertion
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: unconditionally bump set->nelems before insertion
In case that the set is full, a new element gets published then removed
without waiting for the RCU grace period, while RCU reader can be
walking over it already.
To address this issue, add the element transaction even if set is full,
but toggle the set_full flag to report -ENFILE so the abort path safely
unwinds the set to its previous state.
As for element updates, decrement set->nelems to restore it.
A simpler fix is to call synchronize_rcu() in the error path.
However, with a large batch adding elements to already maxed-out set,
this could cause noticeable slowdown of
Microsoft
netfilter: nf_tables: unconditionally bump set->nelems before insertion
vendor_msrc·2026-03-10·CVSS 6.4
CVE-2026-23272 [HIGH] netfilter: nf_tables: unconditionally bump set->nelems before insertion
netfilter: nf_tables: unconditionally bump set->nelems before insertion
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Debian
CVE-2026-23272: linux - In the Linux kernel, the following vulnerability has been resolved: netfilter: ...
vendor_debian·2026·CVSS 7.8
CVE-2026-23272 [HIGH] CVE-2026-23272: linux - In the Linux kernel, the following vulnerability has been resolved: netfilter: ...
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: unconditionally bump set->nelems before insertion In case that the set is full, a new element gets published then removed without waiting for the RCU grace period, while RCU reader can be walking over it already. To address this issue, add the element transaction even if set is full, but toggle the set_full flag to report -ENFILE so the abort path safely unwinds the set to its previous state. As for element updates, decrement set->nelems to restore it. A simpler fix is to call synchronize_rcu() in the error path. However, with a large batch adding elements to already maxed-out set, this could cause noticeable slowdown of such batches.
Scope: local
bookworm: open
bullseye: open
forky: resolved (fixed i
VulDB
Linux Kernel up to 6.18.16/6.19.6/7.0-rc2 nf_tables synchronize_rcu state issue (EUVD-2026-13607 / Nessus ID 303181)
vuldb·2026-05-23·CVSS 7.8
CVE-2026-23272 [HIGH] Linux Kernel up to 6.18.16/6.19.6/7.0-rc2 nf_tables synchronize_rcu state issue (EUVD-2026-13607 / Nessus ID 303181)
A vulnerability identified as critical has been detected in Linux Kernel up to 6.18.16/6.19.6/7.0-rc2. This vulnerability affects the function synchronize_rcu of the component nf_tables. The manipulation leads to state issue.
This vulnerability is referenced as CVE-2026-23272. The attack needs to be initiated within the local network. No exploit is available.
You should upgrade the affected component.
OSV
netfilter: nf_tables: unconditionally bump set->nelems before insertion
osv·2026-03-20·CVSS 7.8
CVE-2026-23272 [HIGH] netfilter: nf_tables: unconditionally bump set->nelems before insertion
netfilter: nf_tables: unconditionally bump set->nelems before insertion
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: unconditionally bump set->nelems before insertion
In case that the set is full, a new element gets published then removed
without waiting for the RCU grace period, while RCU reader can be
walking over it already.
To address this issue, add the element transaction even if set is full,
but toggle the set_full flag to report -ENFILE so the abort path safely
unwinds the set to its previous state.
As for element updates, decrement set->nelems to restore it.
A simpler fix is to call synchronize_rcu() in the error path.
However, with a large batch adding elements to already maxed-out set,
this could cause noticeable slowdown of suc
OSV
CVE-2026-23272: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: unconditionally bump set->nelems before insertion In case th
osv·2026-03-20·CVSS 7.8
CVE-2026-23272 [HIGH] CVE-2026-23272: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: unconditionally bump set->nelems before insertion In case th
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: unconditionally bump set->nelems before insertion In case that the set is full, a new element gets published then removed without waiting for the RCU grace period, while RCU reader can be walking over it already. To address this issue, add the element transaction even if set is full, but toggle the set_full flag to report -ENFILE so the abort path safely unwinds the set to its previous state. As for element updates, decrement set->nelems to restore it. A simpler fix is to call synchronize_rcu() in the error path. However, with a large batch adding elements to already maxed-out set, this could cause noticeable slowdown of such batches.
GHSA
GHSA-qhvv-4mw5-pxh3: In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: unconditionally bump set->nelems before insertion
In case
ghsa_unreviewed·2026-03-20
CVE-2026-23272 [HIGH] GHSA-qhvv-4mw5-pxh3: In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: unconditionally bump set->nelems before insertion
In case
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: unconditionally bump set->nelems before insertion
In case that the set is full, a new element gets published then removed
without waiting for the RCU grace period, while RCU reader can be
walking over it already.
To address this issue, add the element transaction even if set is full,
but toggle the set_full flag to report -ENFILE so the abort path safely
unwinds the set to its previous state.
As for element updates, decrement set->nelems to restore it.
A simpler fix is to call synchronize_rcu() in the error path.
However, with a large batch adding elements to already maxed-out set,
this could cause noticeable slowdown of such batches.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-23272 kernel: netfilter: nf_tables: unconditionally bump set->nelems before insertion
bugzilla·2026-03-20·CVSS 7.8
CVE-2026-23272 [HIGH] CVE-2026-23272 kernel: netfilter: nf_tables: unconditionally bump set->nelems before insertion
CVE-2026-23272 kernel: netfilter: nf_tables: unconditionally bump set->nelems before insertion
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: unconditionally bump set->nelems before insertion
In case that the set is full, a new element gets published then removed
without waiting for the RCU grace period, while RCU reader can be
walking over it already.
To address this issue, add the element transaction even if set is full,
but toggle the set_full flag to report -ENFILE so the abort path safely
unwinds the set to its previous state.
As for element updates, decrement set->nelems to restore it.
A simpler fix is to call synchronize_rcu() in the error path.
However, with a large batch adding elements to already maxed-out set,
this could cause not
Wiz
CVE-2026-23272 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 7.8
CVE-2026-23272 [HIGH] CVE-2026-23272 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-23272 :
Linux Kernel vulnerability analysis and mitigation
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: unconditionally bump set->nelems before insertion
In case that the set is full, a new element gets published then removed
without waiting for the RCU grace period, while RCU reader can be
walking over it already.
To address this issue, add the element transaction even if set is full,
but toggle the set_full flag to report -ENFILE so the abort path safely
unwinds the set to its previous state.
As for element updates, decrement set->nelems to restore it.
A simpler fix is to call synchronize_rcu() in the error path.
However, with a large batch adding elements to already maxed-out set,
this could cause noticeable slowdown of suc
https://git.kernel.org/stable/c/25fcaef7948912652905e96922f36583a84fffedhttps://git.kernel.org/stable/c/6826131c7674329335ca25df2550163eb8a1fd0chttps://git.kernel.org/stable/c/86bc4b1a0f672d47ac19f9022432cb6a2e01cb33https://git.kernel.org/stable/c/ccb8c8f3c1127cf34d18c737309897c68046bf21https://git.kernel.org/stable/c/def602e498a4f951da95c95b1b8ce8ae68aa733ahttps://git.kernel.org/stable/c/e3ccb11fc8249759d23326038c8db987ddaabc77
2026-03-20
Published