md/raid10: fix writes_pending and barrier reference leaks on discard failures
In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix writes_pending and barrier reference leaks on discard failures raid10_make_request() acquires a writes_pending reference with md_write_start() before calling raid10_handle_discard(). Several failure paths in raid10_handle_discard() complete the bio and return without releasing the corresponding reference, causing md_write_end() to be skipped. Call md_write_end() before returning from these failure paths to keep writes_pending accounting balanced. Additionally, discard split allocation failures can occur after wait_barrier() succeeds. Those paths return without calling allow_barrier(), leaking the associated barrier reference. Release the barrier before returning from those paths.
CVE-2026-72438
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-2026-72438
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": "c9aa889b035fca4598ae985a0f0c76ebbb547ad2",
"lessThan": "80ac31cce55432034a9eb98262c92ace7866e494",
"versionType": "git"
},
{
"status": "affected",
"version": "c9aa889b035fca4598ae985a0f0c76ebbb547ad2",
"lessThan": "fea33968592559a55a3f5a96a6386bebcaf988a8",
"versionType": "git"
},
{
"status": "affected",
"version": "c9aa889b035fca4598ae985a0f0c76ebbb547ad2",
"lessThan": "11b35d1906a7277a3d64afe34224133b44327328",
"versionType": "git"
},
{
"status": "affected",
"version": "c9aa889b035fca4598ae985a0f0c76ebbb547ad2",
"lessThan": "d1324b41dabd26787559efaeb430643c627c1eb0",
"versionType": "git"
},
{
"status": "affected",
"version": "c9aa889b035fca4598ae985a0f0c76ebbb547ad2",
"lessThan": "393d687131d8aa8c7e4de2cb494438e145d20fc2",
"versionType": "git"
},
{
"status": "affected",
"version": "39db562b3fedb93978a7e42dd216b306740959f8",
"versionType": "git"
},
{
"status": "affected",
"version": "5.15.111",
"lessThan": "5.16",
"versionType": "semver"
}
],
"programFiles": [
"drivers/md/raid10.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": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"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/raid10.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72438
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #46521 · Revision 1
- Added to Heist Feed
- Publisher date