CVE-2026-90429: Linux kernel · iommu/tegra241-cmdqv: Synchronize the error ISR against VINTF (de)init
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 7.8 High.
Data as of 26 Oct 2026, 13:47 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% 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:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 17 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 is available that adds proper synchronization and memory ordering to the iommu/tegra241-cmdqv driver to prevent race conditions between the error ISR and VINTF initialization/deinitialization. Users should apply the official Linux kernel updates that include this patch. Since this is a kernel vulnerability, upgrading to a patched kernel version is the recommended mitigation.
Description
A vulnerability in the Linux kernel's iommu/tegra241-cmdqv component allows a race condition between error interrupt service routines and VINTF (de)initialization. This can cause NULL pointer dereferences or use-after-free conditions due to unsynchronized access to shared data structures. The issue is fixed by adding proper memory ordering and synchronization to ensure safe access and teardown of VINTF slots.
References
- nvd.nist.gov/vuln/detail/CVE-2026-90429 (opens in a new tab)
- git.kernel.org/stable/c/a491be376abd1c80a314cdd658632c85cd660b73 (opens in a new tab)
- git.kernel.org/stable/c/bcb82407633c3008362ad927699d985ee4981557 (opens in a new tab)
- git.kernel.org/stable/c/f3ef4abc271a1d3d7b6715879e149c286dc8aae7 (opens in a new tab)
- ubuntu.com/security/CVE-2026-90429 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-90429 (opens in a new tab)
- git.kernel.org/linus/a491be376abd1c80a314cdd658632c85cd660b73 (opens in a new tab)