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CVE-2026-45959crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree

Description

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 { ... } **`.

Timeline

  1. ID reserved

    By Linux

  2. · 14 days later

    Published

  3. · 5 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-45959, by who scored it
Scored byCVSSScoreVector
LinuxCNA (assigner)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.13% · top 98% of all CVEs (15 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Affected products

  • Linux · Linux

    • affected a71475582ada92ba021852bf3c2b40ab3718549b – < 9a3ace9b010ffd8c422c97844ae152f7c53d6b18
    • affected a71475582ada92ba021852bf3c2b40ab3718549b – < 90f9090e3e744a8fe3bb6fa0e61f577347728b0b
    • affected a71475582ada92ba021852bf3c2b40ab3718549b – < d5abcc33ee76bc26d58b39dc1a097e43a99dd438

  • Linux · Linux

    • affected 6.17
    • unaffected < 6.17
    • unaffected 6.18.14 – ≤ 6.18.*
    • unaffected 6.19.4 – ≤ 6.19.*
    • unaffected 7.0 – ≤ *

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .