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VulnerabilityPublished Updated

CVE-2025-38675: Linux kernel · xfrm: state: initialize state_ptrs earlier in xfrm_state_find

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · CVSS 7.8 High · fixed in 463562f9591742be62ddde3b426a0533ed496955 : patch Linux kernel soon.

Data as of 30 Oct 2026, 12:33 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Linux)CVSS 3.17.8
Patch
Available – fixed in 463562f9591742be62ddde3b426a0533ed496955, 94d077c331730510d5611b438640a292097341f0, 6bf2daafc51bcb9272c0fdff2afd38217337d0d3 +4
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=6.12.13 <6.12.41
  • >=6.1.191 <6.2
  • >=6.6.120 <6.7
  • >=6.13.2 <6.14
Fixed in
  • 463562f9591742be62ddde3b426a0533ed496955
  • 94d077c331730510d5611b438640a292097341f0
  • 6bf2daafc51bcb9272c0fdff2afd38217337d0d3
  • 6.14
  • 6.12.41
  • 6.7
  • 6.2
LinuxLinuxAffected
  • =6.14
Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm: state: initialize state_ptrs earlier in xfrm_state_find In case of preemption, xfrm_state_look_at will find a different pcpu_id and look up states for that other CPU. If we matched a state for CPU2 in the state_cache while the lookup started on CPU1, we will jump to "found", but the "best" state that we got will be ignored and we will enter the "acquire" block. This block uses state_ptrs, which isn't initialized at this point. Let's initialize state_ptrs just after taking rcu_read_lock. This will also prevent a possible misuse in the future, if someone adjusts this function.

References

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