CVE-2026-45838
bpf: fix end-of-list detection in cgroup_storage_get_next_key()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 27, 2026 |
| Last Updated | Jun 1, 2026 |
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Affected Versions
Linux / Linux
de9cbbaadba5adf88a19e46df61f7054000838f6 < 0f3d9dd5e1fd52b39e25328307c6a694e994ffe3 de9cbbaadba5adf88a19e46df61f7054000838f6 < 26d3339e465e54107bd85884341d1609c5300d6a de9cbbaadba5adf88a19e46df61f7054000838f6 < 2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6 de9cbbaadba5adf88a19e46df61f7054000838f6 < b4b5a20bed82130da2f2818f04d52378952fbd0b de9cbbaadba5adf88a19e46df61f7054000838f6 < 85a2f30e40f7468db732f55659bc6318874f49af de9cbbaadba5adf88a19e46df61f7054000838f6 < 32ce55d424395904986f5066f8755f6cb9993377 de9cbbaadba5adf88a19e46df61f7054000838f6 < fc39753b7f92e09177777e9c648afe5aa3abb81f de9cbbaadba5adf88a19e46df61f7054000838f6 < 5828b9e5b272ecff7cf5d345128d3de7324117f7
Linux / Linux
4.19
References
git.kernel.org: https://git.kernel.org/stable/c/0f3d9dd5e1fd52b39e25328307c6a694e994ffe3 git.kernel.org: https://git.kernel.org/stable/c/26d3339e465e54107bd85884341d1609c5300d6a git.kernel.org: https://git.kernel.org/stable/c/2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6 git.kernel.org: https://git.kernel.org/stable/c/b4b5a20bed82130da2f2818f04d52378952fbd0b git.kernel.org: https://git.kernel.org/stable/c/85a2f30e40f7468db732f55659bc6318874f49af git.kernel.org: https://git.kernel.org/stable/c/32ce55d424395904986f5066f8755f6cb9993377 git.kernel.org: https://git.kernel.org/stable/c/fc39753b7f92e09177777e9c648afe5aa3abb81f git.kernel.org: https://git.kernel.org/stable/c/5828b9e5b272ecff7cf5d345128d3de7324117f7