High
xfrm: validate selector family and prefixlen during match
In the Linux kernel, the following vulnerability has been resolved: xfrm: validate selector family and prefixlen during match syzbot reported a shift-out-of-bounds in xfrm_selector_match() due to AF_UNSPEC selector with large prefixlen (e.g. 128) matched against IPv4 flow (when XFRM_STATE_AF_UNSPEC is set). Fix this by: - Rejecting mismatched families in xfrm_selector_match. - Returning false in addr4_match if prefixlen > 32. - Returning false in addr_match if prefixlen > 128 (prevents overflow).
Announced Source revision 1
Original source ↗CVE-2026-72450
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-2026-72450
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": "8df5cd51fd70c33aa1776e5cbcd82b0a86649d73",
"lessThan": "87a5bbccc7ff4edb3f42fea387124237d2ba91ee",
"versionType": "git"
},
{
"status": "affected",
"version": "2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71",
"lessThan": "bd7f202cf77556cff59f68dc30e4cdf40cb6e33b",
"versionType": "git"
},
{
"status": "affected",
"version": "bce1afaa212ec380bf971614f70909a27882b862",
"lessThan": "a3968ad4195d72c8fddcc6c0ef39da95ac98711a",
"versionType": "git"
},
{
"status": "affected",
"version": "7d9868180bd1e4cf37e7c5067362658971162366",
"lessThan": "efa9e3b9f3dea2e1ea4c7edf4edc863faef85986",
"versionType": "git"
},
{
"status": "affected",
"version": "3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563",
"lessThan": "78783fefdc8f36879b1a17efa0d3195ea5f2dc5f",
"versionType": "git"
},
{
"status": "affected",
"version": "3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563",
"lessThan": "6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe",
"versionType": "git"
},
{
"status": "affected",
"version": "3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563",
"lessThan": "5a03a2ee17e8259dde631ed84fd8322db06cb2ae",
"versionType": "git"
},
{
"status": "affected",
"version": "3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563",
"lessThan": "40f0b1047918539f0b0f795ac65e35336b4c2c78",
"versionType": "git"
},
{
"status": "affected",
"version": "f31398570acf0f0804c644006f7bfa9067106b0a",
"versionType": "git"
},
{
"status": "affected",
"version": "401ad99a5ae7180dd9449eac104cb755f442e7f3",
"versionType": "git"
},
{
"status": "affected",
"version": "e68dd80ba498265d2266b12dc3459164f4ff0c4a",
"versionType": "git"
},
{
"status": "affected",
"version": "5.10.229",
"lessThan": "5.10.261",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.170",
"lessThan": "5.15.212",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.115",
"lessThan": "6.1.178",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.6.59",
"lessThan": "6.6.145",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.19.323",
"lessThan": "4.20",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.4.285",
"lessThan": "5.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.11.6",
"lessThan": "6.12",
"versionType": "semver"
}
],
"programFiles": [
"include/net/xfrm.h",
"net/xfrm/xfrm_policy.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.12",
"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": [
"include/net/xfrm.h",
"net/xfrm/xfrm_policy.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72450
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #33057 · Revision 1
- Added to Heist Feed
- Publisher date