CVE-2026-100078: Linux kernel · wifi: iwlwifi: mei: pass correct argument to function
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation 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 for this vulnerability has been implemented in the affected linux-hwe-edge kernel versions. Users should apply the updated kernel versions listed as affected to remediate this issue. Since this is a kernel-level fix, upgrading to the patched versions is the recommended mitigation.
Description
A vulnerability in the Linux kernel's iwlwifi driver was fixed by correcting the argument passed to the function iwl_mei_write_cyclic_buf(). The first argument should be the cldev, but the q_head pointer was incorrectly passed instead. This flaw affects specific versions of the linux-hwe-edge kernel and has a medium severity rating.
References
- ubuntu.com/security/CVE-2026-100078 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-100078 (opens in a new tab)
- git.kernel.org/stable/c/6b7d5abf3e374ca3af31ceb6b9b2efc7a48afde3 (opens in a new tab)
- git.kernel.org/stable/c/905f57aefde4f4092a411c8a55856182fb1c7598 (opens in a new tab)
- git.kernel.org/stable/c/034445e19f12bb8771c58e2ecf1fbd6eac9b5fac (opens in a new tab)
- git.kernel.org/stable/c/082b353c05b8eaf07e03fc1918c176cd3c216e25 (opens in a new tab)
- git.kernel.org/stable/c/f22ad9d1077c83718d9e6c84b71726287c1d1ad3 (opens in a new tab)
- git.kernel.org/stable/c/ee91ae7f5815345612d8c0afd5d7efed361bcdb5 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-100078 (opens in a new tab)
- msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-100078.json (opens in a new tab)
- support.microsoft.com/lifecycle (opens in a new tab)
- first.org/cvss (opens in a new tab)