CVE-2024-41049
HIGH severity · CVSS 7.8 · Use-after-free
7.8CVSS HIGH
Summary
In the Linux kernel, the following vulnerability has been resolved: filelock: fix potential use-after-free in posix_lock_inode Light Hsieh reported a KASAN UAF warning in trace_posix_lock_inode(). The request pointer had been changed earlier to point to a lock entry that was added to the inode's list. However, before the tracepoint could fire, another task raced in and freed that lock. Fix this by moving the tracepoint inside the spinlock, which should ensure that this doesn't happen.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/02a8964260756c70b20393ad4006948510ac9967 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/02a8964260756c70b20393ad4006948510ac9967Patch
- https://git.kernel.org/stable/c/116599f6a26906cf33f67975c59f0692ecf7e9b2Patch
- https://git.kernel.org/stable/c/1b3ec4f7c03d4b07bad70697d7e2f4088d2cfe92Patch
- https://git.kernel.org/stable/c/1cbbb3d9475c403ebedc327490c7c2b991398197Patch
- https://git.kernel.org/stable/c/432b06b69d1d354a171f7499141116536579eb6aPatch
- https://git.kernel.org/stable/c/5cb36e35bc10ea334810937990c2b9023dacb1b0Patch
- https://git.kernel.org/stable/c/7d4c14f4b511fd4c0dc788084ae59b4656ace58bPatch