CVE-2026-98211: Linux kernel · mmc: mmci: Fix use-after-free in busy-timeout work
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in af6fbf72e899932f330c4e5d0b84d985c922c633 : 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
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in af6fbf72e899932f330c4e5d0b84d985c922c633, 432b98c1f5daecf04a33c8e1688d26e7ac221e23, 7fecf79f31568de161be14911db10d1251617b01 +1
Exploitation evidence
Disclosed: evidence found.
CVE published 6 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 Linux kernel to af6fbf72e899932f330c4e5d0b84d985c922c633, 432b98c1f5daecf04a33c8e1688d26e7ac221e23, 7fecf79f31568de161be14911db10d1251617b01 or 2b19cf3e50cddaff07b657dae1a8f30f06032852.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been applied in the Linux kernel. Users should update to the fixed kernel versions identified by the commits af6fbf72e899932f330c4e5d0b84d985c922c633, 432b98c1f5daecf04a33c8e1688d26e7ac221e23, 7fecf79f31568de161be14911db10d1251617b01, and 2b19cf3e50cddaff07b657dae1a8f30f06032852. No additional mitigation is required beyond applying these patches.
Description
A use-after-free vulnerability in the Linux kernel's MMC driver (mmci) was fixed. The issue involved the ux500_busy_complete() function queuing work that could dereference freed memory after device removal. The fix masks controller interrupts and disables delayed work during removal to prevent this.
References
- git.kernel.org/stable/c/af6fbf72e899932f330c4e5d0b84d985c922c633 (opens in a new tab)
- git.kernel.org/stable/c/7fecf79f31568de161be14911db10d1251617b01 (opens in a new tab)
- git.kernel.org/stable/c/432b98c1f5daecf04a33c8e1688d26e7ac221e23 (opens in a new tab)
- git.kernel.org/stable/c/2b19cf3e50cddaff07b657dae1a8f30f06032852 (opens in a new tab)