CVE-2023-53622
In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix possible data races in gfs2_show_options()
Some fields such as gt_logd_secs of the struct gfs2_tune are accessed without holding the lock gt_spin in gfs2_show_options():
val = sdp->sd_tune.gt_logd_secs; if (val != 30) seq_printf(s, ",commit=%d", val);
And thus can cause data races when gfs2_show_options() and other functions such as gfs2_reconfigure() are concurrently executed:
spin_lock(>->gt_spin); gt->gt_logd_secs = newargs->ar_commit;
To fix these possible data races, the lock sdp->sd_tune.gt_spin is acquired before accessing the fields of gfs2_tune and released after these accesses.
Further changes by Andreas:
- Don't hold the spin lock over the seq_printf operations.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 2.6.31 | 4.14.324 |
| linux / linux_kernel | 4.15 | 4.19.293 |
| linux / linux_kernel | 4.20 | 5.4.255 |
| linux / linux_kernel | 5.5 | 5.10.192 |
| linux / linux_kernel | 5.11 | 5.15.128 |
| linux / linux_kernel | 5.16 | 6.1.47 |
| linux / linux_kernel | 6.2 | 6.4.12 |
- https://git.kernel.org/stable/c/235a5ae73cea29109a3e06f100493f17857e6a93
- https://git.kernel.org/stable/c/42077d4de49e4d9c773c97c42d5383b4899a8f9d
- https://git.kernel.org/stable/c/6fa0a72cbbe45db4ed967a51f9e6f4e3afe61d20
- https://git.kernel.org/stable/c/7c5b2649f6a37d45bfb7abf34c9b71d08677139f
- https://git.kernel.org/stable/c/7e5bbeb7eb813bb2568e1d5d02587df943272e57
- https://git.kernel.org/stable/c/85e888150075cb221270b64bf772341fc6bd11d9
- https://git.kernel.org/stable/c/a4f71523ed2123d63b431cc0cea4e9f363a0f054
- https://git.kernel.org/stable/c/b4a7ab57effbed42624842f2ab2a49b177c21a47
Deep Security Visibility Without the Complexity
SynScan provides clear, real-time security insights so you can monitor your attack surface, spot risks early, and act fast—without extra complexity.
- No setup fees
- 5-min deployment
- Cancel anytime