block: validate user space vectors during extraction
In the Linux kernel, the following vulnerability has been resolved: block: validate user space vectors during extraction The bio-based drivers don't necessarily check the alignment split, and stacking block drivers don't always handle a misalignment detected after submitting the bio. Validate user vectors against the device's dma_alignment as the bio is built from the iov_iter, rejecting misaligned early with -EINVAL.
CVE-2026-89584
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-2026-89584
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": "5ff3f74e145adc79b49668adb8de276446acf6be",
"lessThan": "d44a97a3b1c00cc571245124e23e5ceb0a0225a0",
"versionType": "git"
},
{
"status": "affected",
"version": "5ff3f74e145adc79b49668adb8de276446acf6be",
"lessThan": "14b007e178811db72fbb1ebb3535160db6ec1e6a",
"versionType": "git"
}
],
"programFiles": [
"block/bio.c",
"block/blk-map.c",
"block/fops.c",
"fs/iomap/direct-io.c",
"include/linux/bio.h",
"include/linux/uio.h",
"lib/iov_iter.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"block/bio.c",
"block/blk-map.c",
"block/fops.c",
"fs/iomap/direct-io.c",
"include/linux/bio.h",
"include/linux/uio.h",
"lib/iov_iter.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89584
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #35092 · Revision 1
- Added to Heist Feed
- Publisher date