bpf: fix end-of-list detection in cgroup_storage_get_next_key()
Summary
| CVE | CVE-2026-45838 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-27 11:16:23 UTC |
| Updated | 2026-06-01 17:17:11 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.000320000 probability, percentile 0.097530000 (date 2026-06-02)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected de9cbbaadba5adf88a19e46df61f7054000838f6 0f3d9dd5e1fd52b39e25328307c6a694e994ffe3 git | Not specified |
| CNA | Linux | Linux | affected de9cbbaadba5adf88a19e46df61f7054000838f6 26d3339e465e54107bd85884341d1609c5300d6a git | Not specified |
| CNA | Linux | Linux | affected de9cbbaadba5adf88a19e46df61f7054000838f6 2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6 git | Not specified |
| CNA | Linux | Linux | affected de9cbbaadba5adf88a19e46df61f7054000838f6 b4b5a20bed82130da2f2818f04d52378952fbd0b git | Not specified |
| CNA | Linux | Linux | affected de9cbbaadba5adf88a19e46df61f7054000838f6 85a2f30e40f7468db732f55659bc6318874f49af git | Not specified |
| CNA | Linux | Linux | affected de9cbbaadba5adf88a19e46df61f7054000838f6 32ce55d424395904986f5066f8755f6cb9993377 git | Not specified |
| CNA | Linux | Linux | affected de9cbbaadba5adf88a19e46df61f7054000838f6 fc39753b7f92e09177777e9c648afe5aa3abb81f git | Not specified |
| CNA | Linux | Linux | affected de9cbbaadba5adf88a19e46df61f7054000838f6 5828b9e5b272ecff7cf5d345128d3de7324117f7 git | Not specified |
| CNA | Linux | Linux | affected 4.19 | Not specified |
| CNA | Linux | Linux | unaffected 4.19 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.258 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.175 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.141 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.91 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.33 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.10 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/b4b5a20bed82130da2f2818f04d52378952fbd0b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/26d3339e465e54107bd85884341d1609c5300d6a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/32ce55d424395904986f5066f8755f6cb9993377 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/fc39753b7f92e09177777e9c648afe5aa3abb81f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/0f3d9dd5e1fd52b39e25328307c6a694e994ffe3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/85a2f30e40f7468db732f55659bc6318874f49af | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/5828b9e5b272ecff7cf5d345128d3de7324117f7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.