CVE-2026-98146: Linux kernel · accel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in b3709d354545e70388177500761f92d906c4dfd6 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 14:05 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.09% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in b3709d354545e70388177500761f92d906c4dfd6, 93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a, 52f3e086760a9a3e02a46a10b57caffd73b1c204
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
Upgrade Linux kernel to b3709d354545e70388177500761f92d906c4dfd6, 93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a or 52f3e086760a9a3e02a46a10b57caffd73b1c204.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
AI-suggested
This vulnerability has been fixed in the Linux kernel by removing the __counted_by annotation from the amdxdna_cmd_chain structure. Users should update to a kernel version that includes the fix identified by commits b3709d354545e70388177500761f92d906c4dfd6, 93fa3e925b15b0ded0a549fe7f12bfbb1c4e171a, or 52f3e086760a9a3e02a46a10b57caffd73b1c204. No additional mitigation is required beyond applying the official fix.
Description
A vulnerability in the Linux kernel's accel/amdxdna component involved the use of __counted_by annotation on a flexible array within the amdxdna_cmd_chain structure. This annotation relied on a userspace-controlled command_count value, which could be concurrently modified, potentially causing a kernel panic due to a failed bounds check. The issue has been resolved by removing the __counted_by annotation to prevent reliance on the mutable command_count for bounds checking.