CVE-2026-45959 (GCVE-0-2026-45959)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:18 – Updated: 2026-08-05 12:28
VLAI
Title
crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree Annotating a local pointer variable, which will be assigned with the kmalloc-family functions, with the `__cleanup(kfree)` attribute will make the address of the local variable, rather than the address returned by kmalloc, passed to kfree directly and lead to a crash due to invalid deallocation of stack address. According to other places in the repo, the correct usage should be `__free(kfree)`. The code coincidentally compiled because the parameter type `void *` of kfree is compatible with the desired type `struct { ... } **`.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a71475582ada92ba021852bf3c2b40ab3718549b , < 9a3ace9b010ffd8c422c97844ae152f7c53d6b18 (git)
Affected: a71475582ada92ba021852bf3c2b40ab3718549b , < 90f9090e3e744a8fe3bb6fa0e61f577347728b0b (git)
Affected: a71475582ada92ba021852bf3c2b40ab3718549b , < d5abcc33ee76bc26d58b39dc1a097e43a99dd438 (git)
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Linux Linux Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 6.18.14 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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      "title": "kernel: crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree",
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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.

Sightings

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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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