Description

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.

Classification

CVE ID: CVE-2024-41049

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 5.08% (scored less or equal to compared to others)

EPSS Date: 2025-02-04 (when was this score calculated)

References

https://git.kernel.org/stable/c/1cbbb3d9475c403ebedc327490c7c2b991398197
https://git.kernel.org/stable/c/7d4c14f4b511fd4c0dc788084ae59b4656ace58b
https://git.kernel.org/stable/c/02a8964260756c70b20393ad4006948510ac9967
https://git.kernel.org/stable/c/5cb36e35bc10ea334810937990c2b9023dacb1b0
https://git.kernel.org/stable/c/432b06b69d1d354a171f7499141116536579eb6a
https://git.kernel.org/stable/c/116599f6a26906cf33f67975c59f0692ecf7e9b2
https://git.kernel.org/stable/c/1b3ec4f7c03d4b07bad70697d7e2f4088d2cfe92

Timeline