CVE-2025-38675 (GCVE-0-2025-38675)

Vulnerability from cvelistv5 – Published: 2025-08-22 16:04 – Updated: 2026-05-23 16:00
VLAI
Title
xfrm: state: initialize state_ptrs earlier in xfrm_state_find
Summary
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.
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a16871c7832ea6435abb6e0b58289ae7dcb7e4fc , < 6bf2daafc51bcb9272c0fdff2afd38217337d0d3 (git)
Affected: e952837f3ddb0ff726d5b582aa1aad9aa38d024d , < 463562f9591742be62ddde3b426a0533ed496955 (git)
Affected: e952837f3ddb0ff726d5b582aa1aad9aa38d024d , < 94d077c331730510d5611b438640a292097341f0 (git)
Affected: b86dc510308d7a8955f3f47a4fea4bef887653e4 (git)
Affected: dd4c2a174994238d55ab54da2545543d36f4e0d0 (git)
Affected: 6.12.13 , < 6.12.41 (semver)
Affected: 6.6.120 , < 6.7 (semver)
Affected: 6.13.2 , < 6.14 (semver)
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Linux Linux Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.12.41 , ≤ 6.12.* (semver)
Unaffected: 6.15.9 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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