CVE-2026-45838
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-05-27
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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.
Weakness Classification (1)
Affected Software (10)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | de9cbbaadba5adf88a19e46df61f7054000838f6 < 0f3d9dd5e1fd52b39e25328307c6a694e994ffe3 |
| Linux | Linux | de9cbbaadba5adf88a19e46df61f7054000838f6 < 26d3339e465e54107bd85884341d1609c5300d6a |
| Linux | Linux | de9cbbaadba5adf88a19e46df61f7054000838f6 < 2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6 |
| Linux | Linux | de9cbbaadba5adf88a19e46df61f7054000838f6 < b4b5a20bed82130da2f2818f04d52378952fbd0b |
| Linux | Linux | de9cbbaadba5adf88a19e46df61f7054000838f6 < 85a2f30e40f7468db732f55659bc6318874f49af |
| Linux | Linux | de9cbbaadba5adf88a19e46df61f7054000838f6 < 32ce55d424395904986f5066f8755f6cb9993377 |
| Linux | Linux | de9cbbaadba5adf88a19e46df61f7054000838f6 < fc39753b7f92e09177777e9c648afe5aa3abb81f |
| Linux | Linux | de9cbbaadba5adf88a19e46df61f7054000838f6 < 5828b9e5b272ecff7cf5d345128d3de7324117f7 |
| Linux | Linux | 4.19 |
| linux | linux_kernel | 4.19 – 5.10.258 |