CVE-2026-45838 (GCVE-0-2026-45838)

Vulnerability from cvelistv5 – Published: 2026-05-27 09:24 – Updated: 2026-05-27 09:24
VLAI
Title
bpf: fix end-of-list detection in cgroup_storage_get_next_key()
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: fix end-of-list detection in cgroup_storage_get_next_key() list_next_entry() never returns NULL -- when the current element is the last entry it wraps to the list head via container_of(). The subsequent NULL check is therefore dead code and get_next_key() never returns -ENOENT for the last element, instead reading storage->key from a bogus pointer that aliases internal map fields and copying the result to userspace. Replace it with list_entry_is_head() so the function correctly returns -ENOENT when there are no more entries.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < b4b5a20bed82130da2f2818f04d52378952fbd0b (git)
Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < 85a2f30e40f7468db732f55659bc6318874f49af (git)
Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < 32ce55d424395904986f5066f8755f6cb9993377 (git)
Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < fc39753b7f92e09177777e9c648afe5aa3abb81f (git)
Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < 5828b9e5b272ecff7cf5d345128d3de7324117f7 (git)
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Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 6.6.141 , ≤ 6.6.* (semver)
Unaffected: 6.12.91 , ≤ 6.12.* (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)
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    "dateReserved": "2026-05-13T15:03:33.077Z",
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}


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