Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: md: Fix missing release of 'active_io' for flush submit_flushes atomic_set(&mddev->flush_pending, 1); rdev_for_each_rcu(rdev, mddev) atomic_inc(&mddev->flush_pending); bi->bi_end_io = md_end_flush submit_bio(bi); /* flush io is done first */ md_end_flush if (atomic_dec_and_test(&mddev->flush_pending)) percpu_ref_put(&mddev->active_io) -> active_io is not released if (atomic_dec_and_test(&mddev->flush_pending)) -> missing release of active_io For consequence, mddev_suspend() will wait for 'active_io' to be zero forever. Fix this problem by releasing 'active_io' in submit_flushes() if 'flush_pending' is decreased to zero.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f9f2d957a8ea93c73182aebf7de30935a58c027d before 6b2ff10390b19a2364af622b6666b690443f9f3f; affected 530cec617f5a8ba6f26bcbf0d64d75c951d17730 before 02dad157ba11064d073f5499dc33552b227d5d3a; affected c4c2345214b66e2505a26fd2ea58839dd7a1d48d before 11f81438927f84edfaaeb5d5f10856c3a1c1fc82; affected fa2bbff7b0b4e211fec5e5686ef96350690597b5 before 855678ed8534518e2b428bcbcec695de9ba248e8 |
| Linux / Linux | affected 6.1.75 before 6.1.80; affected 6.6.14 before 6.6.19; affected 6.7.2 before 6.7.7 |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6b2ff10390b19a2364af622b6666b690443f9f3f
- https://git.kernel.org/stable/c/02dad157ba11064d073f5499dc33552b227d5d3a
- https://git.kernel.org/stable/c/11f81438927f84edfaaeb5d5f10856c3a1c1fc82
- https://git.kernel.org/stable/c/855678ed8534518e2b428bcbcec695de9ba248e8
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.