Description
In blk_mq_tag_to_rq in blk-mq.c in the upstream kernel, there is a possible use after free due to a race condition when a request has been previously freed by blk_mq_complete_request. This could lead to local escalation of privilege. Product: Android. Versions: Android kernel. Android ID: A-63083046.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Android | Android kernel | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 4.2.3-1 | — |
| Debian 13 | linux | 4.2.3-1 | — |
| Debian 12 | linux | 4.2.3-1 | — |
| Debian 8 | linux | 3.16.56-1 | DSA-4187-1 |
Advisories 2
- DSA-4187-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2022-0532 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 11, 2025