md/raid1: fix writes_pending and barrier reference leaks on write failures
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.
CVE-2026-72440
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-72440
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5aa705039c4fca84575539bfa2b8a28454a3d2ca",
"lessThan": "921e2baa626d1504bf30295816aaeb90ac8c82f4",
"versionType": "git"
},
{
"status": "affected",
"version": "5aa705039c4fca84575539bfa2b8a28454a3d2ca",
"lessThan": "a846affa813013204d0cce0cfdaeb99e8fcce188",
"versionType": "git"
},
{
"status": "affected",
"version": "5aa705039c4fca84575539bfa2b8a28454a3d2ca",
"lessThan": "7a450460687919e79b5f8503bdeb13ecf4cca311",
"versionType": "git"
},
{
"status": "affected",
"version": "5aa705039c4fca84575539bfa2b8a28454a3d2ca",
"lessThan": "bffbbfcbd9393e315a7a4286dcd70e875265db9a",
"versionType": "git"
},
{
"status": "affected",
"version": "5aa705039c4fca84575539bfa2b8a28454a3d2ca",
"lessThan": "8e065a1602511282fc0da2dc89445e0eb71a681c",
"versionType": "git"
}
],
"programFiles": [
"drivers/md/raid1.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/md/raid1.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72440
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #46523 · Revision 1
- Added to Heist Feed
- Publisher date