md/raid10: reset read_slot when reusing r10bio for discard
In the Linux kernel, the following vulnerability has been resolved: md/raid10: reset read_slot when reusing r10bio for discard put_all_bios() always drops devs[i].bio, but it only drops devs[i].repl_bio when r10_bio->read_slot < 0. If discard reuses an r10bio that was previously used for a read, read_slot can still be non-negative, and discard cleanup can skip bio_put() on repl_bio. Reset read_slot to -1 when preparing an r10bio for discard so the replacement bio is always released correctly.
CVE-2026-74376
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-2026-74376
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": "d30588b2731fb01e1616cf16c3fe79a1443e29aa",
"lessThan": "3cb2a606ce4902eceabe68338df0653312f861f8",
"versionType": "git"
},
{
"status": "affected",
"version": "d30588b2731fb01e1616cf16c3fe79a1443e29aa",
"lessThan": "561c9711e4f545d6464a023168bdee03b00fa945",
"versionType": "git"
},
{
"status": "affected",
"version": "d30588b2731fb01e1616cf16c3fe79a1443e29aa",
"lessThan": "ce3030e92f14362880055de5fe3c258971118853",
"versionType": "git"
},
{
"status": "affected",
"version": "d30588b2731fb01e1616cf16c3fe79a1443e29aa",
"lessThan": "742e4afd247d9c972695227716b03d432a7e1d26",
"versionType": "git"
},
{
"status": "affected",
"version": "d30588b2731fb01e1616cf16c3fe79a1443e29aa",
"lessThan": "b7313f23ea5a79b199a007bfad64a866cc2c22e7",
"versionType": "git"
},
{
"status": "affected",
"version": "d30588b2731fb01e1616cf16c3fe79a1443e29aa",
"lessThan": "eb04e3e9c14ed15914f5fd2eae8b6435f54f095f",
"versionType": "git"
},
{
"status": "affected",
"version": "d30588b2731fb01e1616cf16c3fe79a1443e29aa",
"lessThan": "6b8a26af065ddc93de2aa5c9f0df98dce9723442",
"versionType": "git"
}
],
"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": "5.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"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-2026-74376
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #33113 · Revision 1
- Added to Heist Feed
- Publisher date