batman-adv: tt: prevent TVLV OOB check overflow
In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadv_tvlv_tt_vlan_data (8 bytes). The size can therefore overflow the u16 used to store the tt_vlan_len. All additional safety checks to prevent out-of-bounds access of the TVLV buffer are invalid due to this overflow. Using size_t prevents this overflow and ensures that the safety checks compare against the actual buffer requirements.
CVE-2026-72226
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-2026-72226
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": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
"lessThan": "0de12a4c4847f571d82a9cd96bc633eded41d7c6",
"versionType": "git"
},
{
"status": "affected",
"version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
"lessThan": "d6ff4764ff784ede25f5c83a6f5883a74c93a5ea",
"versionType": "git"
},
{
"status": "affected",
"version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
"lessThan": "1898273c5dc8148267ef9f97cd2517a2822350e7",
"versionType": "git"
},
{
"status": "affected",
"version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
"lessThan": "604bd5042fbcd1ab9f7cd98fd847ec017aeede8a",
"versionType": "git"
},
{
"status": "affected",
"version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
"lessThan": "7319c0794f91be2734aac695794e7203606b49f8",
"versionType": "git"
},
{
"status": "affected",
"version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
"lessThan": "3256c05d5a9db34346eaf20f52dddde984852d77",
"versionType": "git"
},
{
"status": "affected",
"version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
"lessThan": "6222b443686525cb5a9b6a9cecf23b2e2ab23e2a",
"versionType": "git"
},
{
"status": "affected",
"version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
"lessThan": "7a581d9aaba8c82bd6177fa36b2588eea77f6e2b",
"versionType": "git"
}
],
"programFiles": [
"net/batman-adv/translation-table.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.13",
"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": [
"net/batman-adv/translation-table.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72226
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #32976 · Revision 1
- Added to Heist Feed
- Publisher date