CVE-2026-99210: Linux kernel · accel/rocket: clear rdev on device init failure
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 29 Oct 2026, 22:37 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 28 Oct 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 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10linuxpkg:deb/ubuntu/linux?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-oraclepkg:deb/ubuntu/linux-oracle?arch=source&distro=stonkingOther 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 clears the rdev pointer on device initialization failure to prevent dereferencing error pointers. Users should apply the updated Linux kernel versions that include this fix. Specific patched versions are not listed in the input, so users should consult their Linux distribution's security advisories for updates addressing CVE-2026-99210.
Description
CVE-2026-99210 is a vulnerability in the Linux kernel's accel/rocket driver where the rdev pointer is not cleared on device initialization failure. This can cause a later probe to dereference an error pointer, potentially leading to kernel instability or crashes. The issue arises because the rocket_probe() function stores the return value of rocket_device_init() in rdev without checking for errors first. If initialization fails, rdev remains an error pointer, which is then dereferenced improperly.
References
- ubuntu.com/security/CVE-2026-99210 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-99210 (opens in a new tab)
- git.kernel.org/stable/c/79071b67182e1b352d51a3917729b8d424710b49 (opens in a new tab)
- git.kernel.org/stable/c/4ac852419f0d317c7bd8db5b8acb3cc78be7fe33 (opens in a new tab)
- git.kernel.org/stable/c/dd47a6c920083b069f00f0920e4566915a6aec46 (opens in a new tab)