batman-adv: retrieve ethhdr after potential skb realloc on RX
In the Linux kernel, the following vulnerability has been resolved: batman-adv: retrieve ethhdr after potential skb realloc on RX pskb_may_pull() in batadv_interface_rx() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free. This was done correctly for the VLAN header but missed for the ethernet header which is later used for the TT and AP isolation handling.
CVE-2026-72235
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-2026-72235
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": "6e189f14d1ea28db212b9d70a02131a7ce518012",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "a1820344b180cb55af748f102bc536b5c93164db",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "6abf73589bed3f27ee240c08108feb72bed0b9c6",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "f19259395b44af67f3c274e34237c295b526b859",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "2cefa5141cab8ec1e4b24cf585958b13f2e3049d",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "85a71a81854e0e191ad0e533eabb4eff54866feb",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "b031fc97e1993d29d6c3a0e86a99140528cf31e8",
"versionType": "git"
},
{
"status": "affected",
"version": "c6c8fea29769d998d94fcec9b9f14d4b52b349d3",
"lessThan": "035e1fed892d3d06002a73ff73668f618a514644",
"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-2026-72235
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #32982 · Revision 1
- Added to Heist Feed
- Publisher date