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).
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
82218943058d5e3fe692a38b5a549479738dab33 to < c3c5cfa3170c0940bc66a142859caac07d19b9d6affected82218943058d5e3fe692a38b5a549479738dab33 to < 5f6a84cfb33b34610623857bd93919dcb661e29baffected82218943058d5e3fe692a38b5a549479738dab33 to < 3429ef5f50909cee9e498c50f0c499b9397116ceaffected82218943058d5e3fe692a38b5a549479738dab33 to < f54f9d5368a4e92ede7dd078a62788dae3a7c6efaffected82218943058d5e3fe692a38b5a549479738dab33 to < 35264909e9d1973ab9aaa2a1b07cda70f12bb828affected
Linux Linux
Default version status: affected
5.12affected0 to < 5.12unaffected5.15.200 to ≤ 5.15.*unaffected6.1.162 to ≤ 6.1.*unaffected6.6.37 to ≤ 6.6.*unaffected6.9.8 to ≤ 6.9.*unaffected6.10 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/c3c5cfa3170c0940bc66a142859caac07d19b9d6 ↗
- https://git.kernel.org/stable/c/5f6a84cfb33b34610623857bd93919dcb661e29b ↗
- https://git.kernel.org/stable/c/3429ef5f50909cee9e498c50f0c499b9397116ce ↗
- https://git.kernel.org/stable/c/f54f9d5368a4e92ede7dd078a62788dae3a7c6ef ↗
- https://git.kernel.org/stable/c/35264909e9d1973ab9aaa2a1b07cda70f12bb828 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html ↗