dm era: fix out-of-bounds memory access for non-zero start sector
In the Linux kernel, the following vulnerability has been resolved: dm era: fix out-of-bounds memory access for non-zero start sector dm-era tracks writes in target-relative blocks, but era_map() calculates the writeset block before applying the target offset. Tables with a non-zero start sector can therefore pass an absolute mapped-device block to metadata_current_marked(). If the absolute block is beyond the current writeset size, writeset_marked() tests past the end of the in-core bitset. KASAN reports this as a vmalloc-out-of-bounds access. Apply the target offset before calculating the era block so writeset lookups use the target-relative block number.
CVE-2026-72107
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-2026-72107
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": "eec40579d84873dfb7021eb24c50360f073237c5",
"lessThan": "fe94a0b14010a3c267ff9a2508afb4f27ff1c5bf",
"versionType": "git"
},
{
"status": "affected",
"version": "eec40579d84873dfb7021eb24c50360f073237c5",
"lessThan": "e3ffa8e492e5cdee62d916ee3e9244ccce2b73c5",
"versionType": "git"
},
{
"status": "affected",
"version": "eec40579d84873dfb7021eb24c50360f073237c5",
"lessThan": "9946a7176bd8c25ddd6e5f1799c54e572ee6bf0f",
"versionType": "git"
},
{
"status": "affected",
"version": "eec40579d84873dfb7021eb24c50360f073237c5",
"lessThan": "7e1822f83c5a1ee7b4a19e98edde8770a10b4c71",
"versionType": "git"
},
{
"status": "affected",
"version": "eec40579d84873dfb7021eb24c50360f073237c5",
"lessThan": "db5f9b4601f0012038e5a2628aedec2f47933380",
"versionType": "git"
},
{
"status": "affected",
"version": "eec40579d84873dfb7021eb24c50360f073237c5",
"lessThan": "1fcb5e29dd7a5b85adb9d8b539911741d878e829",
"versionType": "git"
},
{
"status": "affected",
"version": "eec40579d84873dfb7021eb24c50360f073237c5",
"lessThan": "bafe3e720cdac38cd7ea4eb7852a8f2dbe1bbfe6",
"versionType": "git"
},
{
"status": "affected",
"version": "eec40579d84873dfb7021eb24c50360f073237c5",
"lessThan": "a868196f03c2b19418ae3d2b69e195d668a271e5",
"versionType": "git"
}
],
"programFiles": [
"drivers/md/dm-era-target.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"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/dm-era-target.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72107
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41875 · Revision 1
- Added to Heist Feed
- Publisher date