CVEvulnerability
CVE-2025-68744
- Status
- Deferred
- Published
- 2025-12-24
- Last modified
- 2026-10-13
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
bpf: Free special fields when update [lru_,]percpu_hash maps
As [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing
calls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the
memory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the
map gets freed.
Fix this by calling 'bpf_obj_free_fields()' after
'copy_map_value[,_long]()' in 'pcpu_copy_value()'.
References
- https://git.kernel.org/stable/c/3bf1378747e251571e0de15e7e0a6bf2919044e7 git.kernel.org
- https://git.kernel.org/stable/c/4a03d69cece145e4fb527464be29c3806aa3221e git.kernel.org
- https://git.kernel.org/stable/c/6af6e49a76c9af7d42eb923703e7648cb2bf401a git.kernel.org
- https://git.kernel.org/stable/c/96a5cb7072cabbac5c66ac9318242c3bdceebb68 git.kernel.org
- https://git.kernel.org/stable/c/994d6303ed0b84cbc795bb5becf7ed6de40d3f3c git.kernel.org