batman-adv: ensure minimal ethernet header on TX
In the Linux kernel, the following vulnerability has been resolved: batman-adv: ensure minimal ethernet header on TX As documented in commit 8bd67ebb50c0 ("net: bridge: xmit: make sure we have at least eth header len bytes"), it is possible by for a local user with eBPF TC hook access to attach a tc filter which truncates the packet and redirects to an batadv interface. But the code assumes that at least ETH_HLEN bytes are available and thus might read outside of the available buffer. The batadv_interface_tx() must therefore always check itself if enough data is available for the ethernet header and don't rely on min_header_len.
CVE-2026-72232
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-2026-72232
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": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "58799078afebd5115e052bf69ad6697f9759dd6f",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "38cd10b0aeec755d89f78722a2b83f4088ff0cb0",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "811fea37620f2097955d95ce81cfdba03fd30f1b",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "e6640923afee619d9fa82b07394dc9498e202304",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "6b4f521e01257387906f8b969ad3450d8208d4e2",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "9e16b6751a8206de0b865d99bb02771e6751d12d",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "dbeb4145d9778f922f459935da9a027750765a69",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "49df66b7993c80b80c7eb9a84ba5b3410c8296a0",
"versionType": "git"
}
],
"programFiles": [
"net/batman-adv/mesh-interface.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.38"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.38",
"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/mesh-interface.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72232
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #32979 · Revision 1
- Added to Heist Feed
- Publisher date