CVE-2024-42079
Medium
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).
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedJul 29, 2024
First seenJul 29, 2024
How to fix
Update
- linux linux_kernel6.6.37, 6.9.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 6.6.37, 6.7 ≤ v < 6.9.8 | 6.6.37, 6.9.8 |
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