Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Revert "Revert "block, bfq: honor already-setup queue merges"" A crash [1] happened to be triggered in conjunction with commit 2d52c58b9c9b ("block, bfq: honor already-setup queue merges"). The latter was then reverted by commit ebc69e897e17 ("Revert "block, bfq: honor already-setup queue merges""). Yet, the reverted commit was not the one introducing the bug. In fact, it actually triggered a UAF introduced by a different commit, and now fixed by commit d29bd41428cf ("block, bfq: reset last_bfqq_created on group change"). So, there is no point in keeping commit 2d52c58b9c9b ("block, bfq: honor already-setup queue merges") out. This commit restores it. [1] https://bugzilla.kernel.org/show_bug.cgi?id=214503
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 430a67f9d6169a7b3e328bceb2ef9542e4153c7c before 65d8a737452e88f251fe5d925371de6d606df613; affected 430a67f9d6169a7b3e328bceb2ef9542e4153c7c before abc2129e646af7b43025d90a071f83043f1ae76c; affected 430a67f9d6169a7b3e328bceb2ef9542e4153c7c before 4083925bd6dc89216d156474a8076feec904e607; affected 430a67f9d6169a7b3e328bceb2ef9542e4153c7c before 15729ff8143f8135b03988a100a19e66d7cb7ecd |
| Linux / Linux | affected 5.13; unaffected 0 before 5.13; unaffected 5.15.33 through 5.15.*; unaffected 5.16.19 through 5.16.*; unaffected 5.17.2 through 5.17.*; unaffected 5.18 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/65d8a737452e88f251fe5d925371de6d606df613
- https://git.kernel.org/stable/c/abc2129e646af7b43025d90a071f83043f1ae76c
- https://git.kernel.org/stable/c/4083925bd6dc89216d156474a8076feec904e607
- https://git.kernel.org/stable/c/15729ff8143f8135b03988a100a19e66d7cb7ecd
ADP enrichment
No English description supplied.
No references supplied.