Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
48c2b613616235d7c97fda5982f50100a6c79166 to < 7e5bbeb7eb813bb2568e1d5d02587df943272e57affected48c2b613616235d7c97fda5982f50100a6c79166 to < 235a5ae73cea29109a3e06f100493f17857e6a93affected48c2b613616235d7c97fda5982f50100a6c79166 to < b4a7ab57effbed42624842f2ab2a49b177c21a47affected48c2b613616235d7c97fda5982f50100a6c79166 to < 7c5b2649f6a37d45bfb7abf34c9b71d08677139faffected48c2b613616235d7c97fda5982f50100a6c79166 to < 85e888150075cb221270b64bf772341fc6bd11d9affected48c2b613616235d7c97fda5982f50100a6c79166 to < a4f71523ed2123d63b431cc0cea4e9f363a0f054affected48c2b613616235d7c97fda5982f50100a6c79166 to < 42077d4de49e4d9c773c97c42d5383b4899a8f9daffected48c2b613616235d7c97fda5982f50100a6c79166 to < 6fa0a72cbbe45db4ed967a51f9e6f4e3afe61d20affected
Linux Linux
Default version status: affected
2.6.31affected0 to < 2.6.31unaffected4.14.324 to ≤ 4.14.*unaffected4.19.293 to ≤ 4.19.*unaffected5.4.255 to ≤ 5.4.*unaffected5.10.192 to ≤ 5.10.*unaffected5.15.128 to ≤ 5.15.*unaffected6.1.47 to ≤ 6.1.*unaffected6.4.12 to ≤ 6.4.*unaffected6.5 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/7e5bbeb7eb813bb2568e1d5d02587df943272e57 ↗
- https://git.kernel.org/stable/c/235a5ae73cea29109a3e06f100493f17857e6a93 ↗
- https://git.kernel.org/stable/c/b4a7ab57effbed42624842f2ab2a49b177c21a47 ↗
- https://git.kernel.org/stable/c/7c5b2649f6a37d45bfb7abf34c9b71d08677139f ↗
- https://git.kernel.org/stable/c/85e888150075cb221270b64bf772341fc6bd11d9 ↗
- https://git.kernel.org/stable/c/a4f71523ed2123d63b431cc0cea4e9f363a0f054 ↗
- https://git.kernel.org/stable/c/42077d4de49e4d9c773c97c42d5383b4899a8f9d ↗
- https://git.kernel.org/stable/c/6fa0a72cbbe45db4ed967a51f9e6f4e3afe61d20 ↗