GHSA-7wph-5wjx-7rgvMediumCVSS 5.5
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix NULL pointer...
🔗 CVE IDs covered (1)
📋 Description
In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix NULL pointer dereference in gfs2_log_flush
In gfs2_jindex_free(), set sdp->sd_jdesc to NULL under the log flush lock to provide exclusion against gfs2_log_flush().
In gfs2_log_flush(), check if sdp->sd_jdesc is non-NULL before dereferencing it. Otherwise, we could run into a NULL pointer dereference when outstanding glock work races with an unmount (glock_work_func -> run_queue -> do_xmote -> inode_go_sync -> gfs2_log_flush).
🔗 References (8)
- https://nvd.nist.gov/vuln/detail/CVE-2024-42079
- https://git.kernel.org/stable/c/3429ef5f50909cee9e498c50f0c499b9397116ce
- https://git.kernel.org/stable/c/35264909e9d1973ab9aaa2a1b07cda70f12bb828
- https://git.kernel.org/stable/c/f54f9d5368a4e92ede7dd078a62788dae3a7c6ef
- https://git.kernel.org/stable/c/5f6a84cfb33b34610623857bd93919dcb661e29b
- https://git.kernel.org/stable/c/c3c5cfa3170c0940bc66a142859caac07d19b9d6
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://github.com/advisories/GHSA-7wph-5wjx-7rgv