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Medium severity5.5NVD Advisory· Published Jul 29, 2024· Updated Jul 14, 2026

CVE-2024-42079

CVE-2024-42079

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).

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Affected products

163

Patches

Vulnerability mechanics

References

6

News mentions

1