VulnerabilityPublished 3 Apr 2026Updated 5 Nov 2026

CVE-2026-23441: Linux kernel · net/mlx5e: Prevent concurrent access to IPSec ASO context

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in c3db55dc0f3344b62da25b025a8396d78763b5fa : update Linux kernel when convenient.

Data as of 5 Nov 2026, 22:04 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in c3db55dc0f3344b62da25b025a8396d78763b5fa, 6834d196107d5267dcad31b44211da7698e8f618, 99b36850d881e2d65912b2520a1c80d0fcc9429a +2

Exploitation evidence

Disclosed: evidence found.
CVE published 3 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 1ed78fc033074c55221a80498204c539a3696877, < c3db55dc0f3344b62da25b025a8396d78763b5fa	Fixed in c3db55dc0f3344b62da25b025a8396d78763b5fa
LinuxLinux	Affected ≥ 1ed78fc033074c55221a80498204c539a3696877, < 6834d196107d5267dcad31b44211da7698e8f618	Fixed in 6834d196107d5267dcad31b44211da7698e8f618
LinuxLinux	Affected ≥ 1ed78fc033074c55221a80498204c539a3696877, < 99b36850d881e2d65912b2520a1c80d0fcc9429a	Fixed in 99b36850d881e2d65912b2520a1c80d0fcc9429a
LinuxLinux	Affected ≥ 1ed78fc033074c55221a80498204c539a3696877, < 99aaee927800ea00b441b607737f9f67b1899755	Fixed in 99aaee927800ea00b441b607737f9f67b1899755
LinuxLinux	Affected ≥ 1ed78fc033074c55221a80498204c539a3696877, < 2c6a5be0aee5a44066f68a332c30650900e32ad4	Fixed in 2c6a5be0aee5a44066f68a332c30650900e32ad4
LinuxLinux	Affected =6.2	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Prevent concurrent access to IPSec ASO context The query or updating IPSec offload object is through Access ASO WQE. The driver uses a single mlx5e_ipsec_aso struct for each PF, which contains a shared DMA-mapped context for all ASO operations. A race condition exists because the ASO spinlock is released before the hardware has finished processing WQE. If a second operation is initiated immediately after, it overwrites the shared context in the DMA area. When the first operation's completion is processed later, it reads this corrupted context, leading to unexpected behavior and incorrect results. This commit fixes the race by introducing a private context within each IPSec offload object. The shared ASO context is now copied to this private context while the ASO spinlock is held. Subsequent processing uses this saved, per-object context, ensuring its integrity is maintained.

References

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