CVE-2024-41049 Information

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.

Reference

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