{"id":"CVE-2026-45959","title":"crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix a crash due to incorrect cleanup usage of kfree\n\nAnnotating a local pointer variable, which will be assigned with the\nkmalloc-family functions, with t…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= a71475582ada92ba021852bf3c2b40ab3718549b < 9a3ace9b010ffd8c422c97844ae152f7c53d6b18","Linux >= a71475582ada92ba021852bf3c2b40ab3718549b < 90f9090e3e744a8fe3bb6fa0e61f577347728b0b","Linux >= a71475582ada92ba021852bf3c2b40ab3718549b < d5abcc33ee76bc26d58b39dc1a097e43a99dd438","Linux 6.17"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:18:37.644714Z"},"published":"2026-05-27","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:20:47.684Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45959","references":[{"url":"https://git.kernel.org/stable/c/9a3ace9b010ffd8c422c97844ae152f7c53d6b18"},{"url":"https://git.kernel.org/stable/c/90f9090e3e744a8fe3bb6fa0e61f577347728b0b"},{"url":"https://git.kernel.org/stable/c/d5abcc33ee76bc26d58b39dc1a097e43a99dd438"}],"tags":["cve.org"],"epss":0.00127,"epssPercentile":0.02129,"ingestedAt":"2026-10-16T17:24:46.701Z","slug":"CVE-2026-45959","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix a crash due to incorrect cleanup usage of kfree\n\nAnnotating a local pointer variable, which will be assigned with the\nkmalloc-family functions, with the `__cleanup(kfree)` attribute will\nmake the address of the local variable, rather than the address returned\nby kmalloc, passed to kfree directly and lead to a crash due to invalid\ndeallocation of stack address. According to other places in the repo,\nthe correct usage should be `__free(kfree)`. The code coincidentally\ncompiled because the parameter type `void *` of kfree is compatible with\nthe desired type `struct { ... } **`.\n\n## Affected\n\n- `Linux >= a71475582ada92ba021852bf3c2b40ab3718549b < 9a3ace9b010ffd8c422c97844ae152f7c53d6b18`\n- `Linux >= a71475582ada92ba021852bf3c2b40ab3718549b < 90f9090e3e744a8fe3bb6fa0e61f577347728b0b`\n- `Linux >= a71475582ada92ba021852bf3c2b40ab3718549b < d5abcc33ee76bc26d58b39dc1a097e43a99dd438`\n- `Linux 6.17`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}