CVE-2026-97947: Linux kernel · x86/amd_node: Fix potential NULL pointer dereference
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 12:55 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 9% 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 by reordering initialization and replacing the redundant flag with a direct check of amd_roots to prevent NULL pointer dereference. Users should apply the updated kernel versions that include this fix. Patch status is confirmed by the vendor's resolution of the issue in the kernel source. Specific patched versions are not listed in the input; users should consult their distribution's security advisories for updates.
Description
A vulnerability in the Linux kernel's x86/amd_node component could cause a NULL pointer dereference due to improper handling of the amd_roots pointer when amd_smn_init() fails. This issue arises because amd_smn_read/write() functions remain available even if initialization fails, leading to potential access of uninitialized memory. The vulnerability has been addressed by reordering initialization steps and simplifying logic to directly check amd_roots instead of relying on a redundant flag.
References
- ubuntu.com/security/CVE-2026-97947 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97947 (opens in a new tab)
- git.kernel.org/stable/c/a797a2331e5d2ecdbccbae222ea71c759fdb2c2b (opens in a new tab)
- git.kernel.org/stable/c/aefdbd574a362dcf7569bada6d72f64a006b9fb9 (opens in a new tab)
- git.kernel.org/stable/c/fcd19bc829eca237742a3b123f839ad1c473ec85 (opens in a new tab)