CVE-2026-98210: Linux kernel · mmc: mxcmmc: cancel data work and watchdog on remove
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in e2948c4232209e87c861a680f20f1e3cf8a57fec : patch Linux kernel soon.
Data as of 26 Oct 2026, 14:05 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in e2948c4232209e87c861a680f20f1e3cf8a57fec, d3641afe6ee76d852834a34ef0669eefced32752, d3a421c82412344022982d5b91ba23194a0a6f29 +5
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 to a fixed release listed under Affected software.
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
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available and has been applied in the Linux kernel. Users should update to a kernel version that includes the fix commits referenced. No additional mitigation is required beyond applying the official patch.
Description
A use-after-free vulnerability in the Linux kernel's mxcmmc driver was fixed by ensuring proper cancellation of asynchronous work and timers during device removal. The issue involved the watchdog timer and data work not being canceled before freeing the host, which could lead to dereferencing freed memory.
References
- git.kernel.org/stable/c/740f595f8ad678cb4d79f13edd12851df2492bdd (opens in a new tab)
- git.kernel.org/stable/c/d3641afe6ee76d852834a34ef0669eefced32752 (opens in a new tab)
- git.kernel.org/stable/c/314966b490323bdcfd3162a1398b00e587e0ced4 (opens in a new tab)
- git.kernel.org/stable/c/ae10838a7cdf0e54caa9d0a4f488704fd04e7f01 (opens in a new tab)
- git.kernel.org/stable/c/a1ff367e0dc961d73707add508a95df5c3509bd1 (opens in a new tab)
- git.kernel.org/stable/c/23383e0578b58ba2dc0730cf9f7806bd66bf859a (opens in a new tab)
- git.kernel.org/stable/c/e2948c4232209e87c861a680f20f1e3cf8a57fec (opens in a new tab)
- git.kernel.org/stable/c/d3a421c82412344022982d5b91ba23194a0a6f29 (opens in a new tab)