CVE-2026-72432: Linux kernel · tpm_crb: Check ACPI_COMPANION() against NULL during probe
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 9 Nov 2026, 14:03 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 15 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 9 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 24.04 LTSlinux-aws-6.14pkg:deb/ubuntu/linux-aws-6.14?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-aws-6.17pkg:deb/ubuntu/linux-aws-6.17?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-6.14pkg:deb/ubuntu/linux-azure-6.14?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-6.17pkg:deb/ubuntu/linux-azure-6.17?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-fde-6.14pkg:deb/ubuntu/linux-azure-fde-6.14?arch=source&distro=nobleOther 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 that adds a NULL check for the ACPI companion object in the tpm_crb driver. Users should update to patched versions of the linux-hwe-edge kernel listed as affected versions to remediate this issue.
Description
A vulnerability in the Linux kernel's tpm_crb driver was fixed by adding a check for a NULL ACPI companion object during device probing. Without this check, platform drivers relying on the ACPI companion object could be forced to match devices incorrectly due to device_match_driver_override(), potentially causing improper behavior. The issue affects specific versions of the linux-hwe-edge kernel and has been resolved by verifying the presence of the ACPI companion object before use.
References
- ubuntu.com/security/CVE-2026-72432 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-72432 (opens in a new tab)
- git.kernel.org/linus/ddd33806b8911fa2ef849e8bbbab1e3fcb26adc0 (opens in a new tab)
- git.kernel.org/stable/c/c041d2be785feb9b5e36331921eadaefbe65349d (opens in a new tab)
- git.kernel.org/stable/c/ddd33806b8911fa2ef849e8bbbab1e3fcb26adc0 (opens in a new tab)