Critical
ipv6: sr: Fix MAC comparison to be constant-time
In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this.
Announced Source revision 1
Original source ↗CVE-2025-39702
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-2025-39702
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": "bf355b8d2c30a289232042cacc1cfaea4923936c",
"lessThan": "ff55a452d56490047f5233cc48c5d933f8586884",
"versionType": "git"
},
{
"status": "affected",
"version": "bf355b8d2c30a289232042cacc1cfaea4923936c",
"lessThan": "3b348c9c8d2ca2c67559ffd0e258ae7e1107d4f0",
"versionType": "git"
},
{
"status": "affected",
"version": "bf355b8d2c30a289232042cacc1cfaea4923936c",
"lessThan": "86b6d34717fe0570afce07ee79b8eeb40341f831",
"versionType": "git"
},
{
"status": "affected",
"version": "bf355b8d2c30a289232042cacc1cfaea4923936c",
"lessThan": "3ddd55cf19ed6cc62def5e3af10c2a9df1b861c3",
"versionType": "git"
},
{
"status": "affected",
"version": "bf355b8d2c30a289232042cacc1cfaea4923936c",
"lessThan": "b3967c493799e63f648e9c7b6cb063aa2aed04e7",
"versionType": "git"
},
{
"status": "affected",
"version": "bf355b8d2c30a289232042cacc1cfaea4923936c",
"lessThan": "f7878d47560d61e3f370aca3cebb8f42a55b990a",
"versionType": "git"
},
{
"status": "affected",
"version": "bf355b8d2c30a289232042cacc1cfaea4923936c",
"lessThan": "a458b2902115b26a25d67393b12ddd57d1216aaa",
"versionType": "git"
}
],
"programFiles": [
"net/ipv6/seg6_hmac.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.249",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.190",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.149",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.103",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.44",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.16.4",
"versionType": "semver",
"lessThanOrEqual": "6.16.*"
},
{
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv6/seg6_hmac.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-39702
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #30621 · Revision 1
- Added to Heist Feed
- Publisher date