CVE-2026-98615: Linux kernel · eth: fbnic: Set AW_FLUSH_MODE alongside AW_FLUSH when flushing the mailbox
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in ed4163f6ba9b52bfd6216d5215ee7b8eb5072411 : 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
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in ed4163f6ba9b52bfd6216d5215ee7b8eb5072411, a969db6548a1b046cd1423701f5f9c3f5794e90d, 8947f13e436a4ff5eed9f8f019b2865a07af4bb2 +3
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 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 to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
This vulnerability has been fixed in Linux kernel versions 6.12.112, 6.15, and later. Users should upgrade to these or newer versions to resolve the issue. No additional mitigation steps are required as the fix addresses the root cause.
Description
A vulnerability in the Linux kernel's fbnic network driver was fixed by setting the AW_FLUSH_MODE bit alongside AW_FLUSH when flushing the firmware mailbox. Previously, clearing the BME bit halted device writes but left staged requests in the pipeline, causing the flush to never complete. The fix ensures staged writes drain properly without enabling writes to the host prematurely. The read path is unaffected. This issue affects certain Linux kernel versions prior to 6.12.112, 6.15, and 6.14.7.
References
- git.kernel.org/stable/c/ed4163f6ba9b52bfd6216d5215ee7b8eb5072411 (opens in a new tab)
- git.kernel.org/stable/c/8a052cd4b2caee1f90cf0e3874377066939c90e7 (opens in a new tab)
- git.kernel.org/stable/c/a969db6548a1b046cd1423701f5f9c3f5794e90d (opens in a new tab)
- git.kernel.org/stable/c/8947f13e436a4ff5eed9f8f019b2865a07af4bb2 (opens in a new tab)