GHSA-3454-c8gj-2q3jHighCVSS 7.8
In the Linux kernel, the following vulnerability has been resolved: sched_ext: Avoid UAF in...
🔗 CVE IDs covered (1)
📋 Description
In the Linux kernel, the following vulnerability has been resolved:
sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path
In scx_root_enable_workfn(), put_task_struct(p) is called before scx_error() dereferences p->comm and p->pid. If the iterator's reference is the last drop, the task is freed synchronously and the deref becomes a UAF.
Move put_task_struct() past scx_error().
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2026-64226
- https://git.kernel.org/stable/c/45c7c4e3db8b700307313c035ea08be829a7f21b
- https://git.kernel.org/stable/c/57e19ba3f58a67eb924022a5a60b67fd08e5cbbd
- https://git.kernel.org/stable/c/9a415cc53711f2238e0f0ca8a6bcc796c003b127
- https://git.kernel.org/stable/c/cf396941901858b0de426cdcd3974eea6a02c98c
- https://github.com/advisories/GHSA-3454-c8gj-2q3j