bonding: alb: fix uninitialized transport header access in alb_determine_nd()
In the Linux kernel, the following vulnerability has been resolved: bonding: alb: fix uninitialized transport header access in alb_determine_nd() alb_determine_nd() uses icmp6_hdr(skb) to inspect ICMPv6 headers. However, in xmit paths (e.g. packets sent via AF_PACKET / raw sockets or forwarded packets), skb->transport_header is not guaranteed to be initialized. While pskb_network_may_pull() ensures the packet data is linear starting from the network header, it does not set or adjust the transport header offset. Dereferencing icmp6_hdr(skb) can therefore access out-of-bounds memory. Fetch the icmp6hdr directly after ipv6hdr following pskb_network_may_pull(), and reload ipv6hdr in case pskb_may_pull() reallocated skb->head. Also remove the unused bond argument from alb_determine_nd().
CVE-2026-98089
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-2026-98089
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": "0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549",
"lessThan": "862c8eb6947689c44fe11353755576a3672563a5",
"versionType": "git"
},
{
"status": "affected",
"version": "0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549",
"lessThan": "7adb1bf25b0c5cedfb49b6e82844394d4f3c0d99",
"versionType": "git"
},
{
"status": "affected",
"version": "0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549",
"lessThan": "e39cf90bd856443542b97933289749fca07476bf",
"versionType": "git"
},
{
"status": "affected",
"version": "0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549",
"lessThan": "27314f96d29b54e815e7a9b84c3273f1895e68e2",
"versionType": "git"
},
{
"status": "affected",
"version": "0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549",
"lessThan": "3b178894931a268c09126a5b53630f343e10e296",
"versionType": "git"
},
{
"status": "affected",
"version": "0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549",
"lessThan": "70f3995830d3f1e79faa14eb0605914f778feca9",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/bonding/bond_alb.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/bonding/bond_alb.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98089
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38194 · Revision 1
- Added to Heist Feed
- Publisher date