CVE-2026-98176: Linux kernel · drm/amdkfd: Avoid integer underflow with ffs in EOP ring size calc
Source GCVE Database
Not known to be exploited · fixed in c883d0a132d430ef7ebb23fd94323be94d0fbdb8 : update Linux kernel when convenient.
Data as of 6 Nov 2026, 19:33 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in c883d0a132d430ef7ebb23fd94323be94d0fbdb8, 82e1b8299c6da02ce02185c208d2fdf7572b5ea1, 9e8f43579f849fba0dd1059160f50bd44a767366
Exploitation evidence
Disclosed: evidence found.
CVE published 6 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 6 Nov 2026.
What to do
Upgrade Linux kernel to c883d0a132d430ef7ebb23fd94323be94d0fbdb8, 82e1b8299c6da02ce02185c208d2fdf7572b5ea1 or 9e8f43579f849fba0dd1059160f50bd44a767366.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix has been applied in the Linux kernel source code (commit 4f18c56630383c14bfc6b2d65f88f2f895d2121a) that corrects the calculation to prevent integer underflow. Users should update to the Linux kernel version that includes this commit to remediate the vulnerability.
Description
A vulnerability in the Linux kernel's drm/amdkfd component involved an integer underflow in the calculation of the EOP ring size due to improper use of the ffs function. This was fixed by adjusting the calculation to prevent underflow.
References
- nvd.nist.gov/vuln/detail/CVE-2026-98176 (opens in a new tab)
- git.kernel.org/stable/c/82e1b8299c6da02ce02185c208d2fdf7572b5ea1 (opens in a new tab)
- git.kernel.org/stable/c/9e8f43579f849fba0dd1059160f50bd44a767366 (opens in a new tab)
- git.kernel.org/stable/c/c883d0a132d430ef7ebb23fd94323be94d0fbdb8 (opens in a new tab)