CVE-2026-99038: Linux kernel · memstick: rtsx_usb_ms: complete requests after eject instead of dropping them
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f2c181e1d58e911804e14543b2f1cc6b23a0d4d6 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:30 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 f2c181e1d58e911804e14543b2f1cc6b23a0d4d6, d7e811c3a49cd5cff529c157df886719e09370ec, c96ca94425b076dc398d929366e378d1e22ec794 +2
Exploitation evidence
Disclosed: evidence found.
CVE published 23 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– |
AI-suggested
This issue has been fixed in the Linux kernel. The fix ensures all requests are completed properly after eject is set, preventing hangs. Users should update to a Linux kernel version that includes the fix identified by commits f2c181e1d58e911804e14543b2f1cc6b23a0d4d6, d7e811c3a49cd5cff529c157df886719e09370ec, c96ca94425b076dc398d929366e378d1e22ec794, 5616da0f92339328fa1472876df51555e15ad340, or 5b599e28aeb3684772aef64f46cc6f25f4c67128.
Description
A vulnerability in the Linux kernel memstick subsystem (rtsx_usb_ms driver) causes requests to be dropped silently after eject instead of being properly completed. This leads to a hang during device removal, as the memstick core waits indefinitely for request completion. The issue is fixed by ensuring all requests are completed with an error once eject is set, preventing hangs during removal.
References
- git.kernel.org/stable/c/f2c181e1d58e911804e14543b2f1cc6b23a0d4d6 (opens in a new tab)
- git.kernel.org/stable/c/5b599e28aeb3684772aef64f46cc6f25f4c67128 (opens in a new tab)
- git.kernel.org/stable/c/d7e811c3a49cd5cff529c157df886719e09370ec (opens in a new tab)
- git.kernel.org/stable/c/5616da0f92339328fa1472876df51555e15ad340 (opens in a new tab)
- git.kernel.org/stable/c/c96ca94425b076dc398d929366e378d1e22ec794 (opens in a new tab)