CVE-2026-98089bonding: alb: fix uninitialized transport header access in alb_determine_nd()
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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().
Timeline
ID reserved
By Linux
Published
- 24 days later
· 24 days later
Record updated
- 24 days later
· 24 days later
First scored
Medium 5.5
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549 – < 862c8eb6947689c44fe11353755576a3672563a5
- affected 0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549 – < 7adb1bf25b0c5cedfb49b6e82844394d4f3c0d99
- affected 0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549 – < e39cf90bd856443542b97933289749fca07476bf
- affected 0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549 – < 27314f96d29b54e815e7a9b84c3273f1895e68e2
- affected 0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549 – < 3b178894931a268c09126a5b53630f343e10e296
- affected 0da8aa00bfcfeb3f4e6537dd8e2001e0727ba549 – < 70f3995830d3f1e79faa14eb0605914f778feca9
- affected 5.18
- unaffected < 5.18
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2.7 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References6
- https://git.kernel.org/stable/c/862c8eb6947689c44fe11353755576a3672563a5 (opens in a new tab)
- https://git.kernel.org/stable/c/7adb1bf25b0c5cedfb49b6e82844394d4f3c0d99 (opens in a new tab)
- https://git.kernel.org/stable/c/e39cf90bd856443542b97933289749fca07476bf (opens in a new tab)
- https://git.kernel.org/stable/c/27314f96d29b54e815e7a9b84c3273f1895e68e2 (opens in a new tab)
- https://git.kernel.org/stable/c/3b178894931a268c09126a5b53630f343e10e296 (opens in a new tab)
- https://git.kernel.org/stable/c/70f3995830d3f1e79faa14eb0605914f778feca9 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-86919 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98089)Record last updated .