CVE-2026-98089: Linux kernel · bonding: alb: fix uninitialized transport header access in alb_determine_nd()
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 17:16 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix has been implemented in the Linux kernel to address this issue. Users should apply the official kernel updates that include this patch. Since this is a kernel-level vulnerability, upgrading to a patched kernel version is the recommended remediation. No other mitigations are specified.
Description
A vulnerability in the Linux kernel's bonding driver (alb) was fixed to address uninitialized transport header access in the alb_determine_nd() function. The issue involved improper handling of ICMPv6 headers when skb->transport_header was not initialized, potentially causing out-of-bounds memory access. This was resolved by adjusting how the ICMPv6 header is fetched and removing an unused argument.
References
- ubuntu.com/security/CVE-2026-98089 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98089 (opens in a new tab)
- git.kernel.org/stable/c/70f3995830d3f1e79faa14eb0605914f778feca9 (opens in a new tab)
- git.kernel.org/stable/c/e39cf90bd856443542b97933289749fca07476bf (opens in a new tab)
- git.kernel.org/stable/c/27314f96d29b54e815e7a9b84c3273f1895e68e2 (opens in a new tab)
- git.kernel.org/stable/c/3b178894931a268c09126a5b53630f343e10e296 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-98089 (opens in a new tab)
- git.kernel.org/stable/c/7adb1bf25b0c5cedfb49b6e82844394d4f3c0d99 (opens in a new tab)
- git.kernel.org/stable/c/862c8eb6947689c44fe11353755576a3672563a5 (opens in a new tab)