Unrated
xfrm_user: fix info leak in build_mapping()
In the Linux kernel, the following vulnerability has been resolved: xfrm_user: fix info leak in build_mapping() struct xfrm_usersa_id has a one-byte padding hole after the proto field, which ends up never getting set to zero before copying out to userspace. Fix that up by zeroing out the whole structure before setting individual variables.
Announced Source revision 1
Original source ↗CVE-2026-43089
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-2026-43089
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": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4",
"lessThan": "521385cbd50ca9474396d88462fcdfa6489685d9",
"versionType": "git"
},
{
"status": "affected",
"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4",
"lessThan": "c2779ae9a3e5a044e5ccd564681511bbbcc5fc0f",
"versionType": "git"
},
{
"status": "affected",
"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4",
"lessThan": "72a8de41c3eb4dcf22bf3b674ea38fb2f75d6f32",
"versionType": "git"
},
{
"status": "affected",
"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4",
"lessThan": "d3125c541a96fb3c0fc7210112684baf22b6c24d",
"versionType": "git"
},
{
"status": "affected",
"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4",
"lessThan": "5a1a4b049ddde41466ccac0daeec326254b133f2",
"versionType": "git"
},
{
"status": "affected",
"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4",
"lessThan": "f779a6b6cdb6e12baa0663063ac59ab2a8f20c0c",
"versionType": "git"
},
{
"status": "affected",
"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4",
"lessThan": "700c9622b23c33b5933e6dcea816492c064e4e10",
"versionType": "git"
},
{
"status": "affected",
"version": "3a2dfbe8acb154905fdc2fd03ec56df42e6c4cc4",
"lessThan": "1beb76b2053b68c491b78370794b8ff63c8f8c02",
"versionType": "git"
}
],
"programFiles": [
"net/xfrm/xfrm_user.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.29"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.29",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.258",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.209",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.136",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.83",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.24",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.14",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/xfrm/xfrm_user.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-43089
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #28346 · Revision 1
- Added to Heist Feed
- Publisher date