Description
In the Linux kernel, the following vulnerability has been resolved: md/raid1: fix writes_pending and barrier reference leaks on write failures raid1_make_request() acquires a writes_pending reference with md_write_start() before calling raid1_write_request(). Several failure paths in raid1_write_request() complete the bio and return without reaching the normal write completion path, causing the corresponding md_write_end() to be skipped. Make raid1_write_request() return a status indicating whether the write request was successfully queued. This allows raid1_make_request() to call md_write_end() when raid1_write_request() fails. Additionally, if wait_blocked_rdev() fails after wait_barrier() succeeds, the associated barrier reference is not released. Call allow_barrier() before returning from that path to keep the barrier accounting balanced.
References6
- git.kernel.org/stable/c/7a450460687919e79b5f8503bdeb13ecf4cca311
- git.kernel.org/stable/c/874f54243d881fde1890849000beb88a7880d1ec
- git.kernel.org/stable/c/8e065a1602511282fc0da2dc89445e0eb71a681c
- git.kernel.org/stable/c/921e2baa626d1504bf30295816aaeb90ac8c82f4
- git.kernel.org/stable/c/a846affa813013204d0cce0cfdaeb99e8fcce188
- git.kernel.org/stable/c/bffbbfcbd9393e315a7a4286dcd70e875265db9a
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H - EPSS — exploit probability
- 0% percentile: 43 · as of 11 November 2026
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