block: zero non-PI portion of auto integrity buffer
In the Linux kernel, the following vulnerability has been resolved: block: zero non-PI portion of auto integrity buffer The auto-generated integrity buffer for writes needs to be fully initialized before being passed to the underlying block device, otherwise the uninitialized memory can be read back by userspace or anyone with physical access to the storage device. If protection information is generated, that portion of the integrity buffer is already initialized. The integrity data is also zeroed if PI generation is disabled via sysfs or the PI tuple size is 0. However, this misses the case where PI is generated and the PI tuple size is nonzero, but the metadata size is larger than the PI tuple. In this case, the remainder ("opaque") of the metadata is left uninitialized. Generalize the BLK_INTEGRITY_CSUM_NONE check to cover any case when the metadata is larger than just the PI tuple.
CVE-2026-23007
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-2026-23007
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": "c546d6f438338017480d105ab597292da67f6f6a",
"lessThan": "765bf0a5880777c04ae98fc2a9f3b995737b3a64",
"versionType": "git"
},
{
"status": "affected",
"version": "c546d6f438338017480d105ab597292da67f6f6a",
"lessThan": "d6072557b90e0c557df319a56f4a9dc482706d2c",
"versionType": "git"
},
{
"status": "affected",
"version": "c546d6f438338017480d105ab597292da67f6f6a",
"lessThan": "ca22c566b89164f6e670af56ecc45f47ef3df819",
"versionType": "git"
}
],
"programFiles": [
"block/bio-integrity-auto.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.7",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"block/bio-integrity-auto.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23007
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46104 · Revision 1
- Added to Heist Feed
- Publisher date