CVE-2024-42079

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).

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-25)

CWE

CWE-476

Published

2024-07-29

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/3429ef5f50909cee9e498c50f0c499b9397116ce
• https://git.kernel.org/stable/c/35264909e9d1973ab9aaa2a1b07cda70f12bb828
• https://git.kernel.org/stable/c/5f6a84cfb33b34610623857bd93919dcb661e29b
• https://git.kernel.org/stable/c/c3c5cfa3170c0940bc66a142859caac07d19b9d6
• https://git.kernel.org/stable/c/f54f9d5368a4e92ede7dd078a62788dae3a7c6ef

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