CVE-2025-38675

xfrm: state: initialize state_ptrs earlier in xfrm_state_find

State: Published
Severity: 7.8 High
Published: Aug 22, 2025
Updated: Oct 30, 2026
Reserved: Apr 16, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	a16871c7832ea6435abb6e0b58289ae7dcb7e4fc to before 6bf2daafc51bcb9272c0fdff2afd38217337d0d3Affected e952837f3ddb0ff726d5b582aa1aad9aa38d024d to before 463562f9591742be62ddde3b426a0533ed496955Affected e952837f3ddb0ff726d5b582aa1aad9aa38d024d to before 94d077c331730510d5611b438640a292097341f0Affected 80610185e9dd2ef7c0a4818a47390a8655b3dc27Affected b86dc510308d7a8955f3f47a4fea4bef887653e4Affected dd4c2a174994238d55ab54da2545543d36f4e0d0Affected 6.12.13 to before 6.12.41Affected 6.1.191 to before 6.2Affected 6.6.120 to before 6.7Affected 6.13.2 to before 6.14Affected
LinuxLinux	6.14Affected before 6.14Not affected 6.12.41 through 6.12.Not affected 6.15.9 through 6.15.Not affected 6.16 and laterNot affected

Product

Versions

LinuxLinux

a16871c7832ea6435abb6e0b58289ae7dcb7e4fc to before 6bf2daafc51bcb9272c0fdff2afd38217337d0d3Affected
e952837f3ddb0ff726d5b582aa1aad9aa38d024d to before 463562f9591742be62ddde3b426a0533ed496955Affected
e952837f3ddb0ff726d5b582aa1aad9aa38d024d to before 94d077c331730510d5611b438640a292097341f0Affected
80610185e9dd2ef7c0a4818a47390a8655b3dc27Affected
b86dc510308d7a8955f3f47a4fea4bef887653e4Affected
dd4c2a174994238d55ab54da2545543d36f4e0d0Affected
6.12.13 to before 6.12.41Affected
6.1.191 to before 6.2Affected
6.6.120 to before 6.7Affected
6.13.2 to before 6.14Affected

LinuxLinux

6.14Affected
before 6.14Not affected
6.12.41 through 6.12.*Not affected
6.15.9 through 6.15.*Not affected
6.16 and laterNot affected

References

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