CVE-2026-64270: Linux kernel · Input: mms114 – reject an oversized device packet size
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f3d5e77b27fded71dcb97f409262bf0abba0410e : patch Linux kernel soon.
Data as of 6 Nov 2026, 16:51 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-06.
- Patch
- Available – fixed in f3d5e77b27fded71dcb97f409262bf0abba0410e, d99ba93c35ff2d5276e9c2632967481bd53a79d0, b78150729762d47c14fe29a2582bdca5568e62b8 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 6 Nov 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 source. The patch rejects oversized packets and drops the input rather than reading past the buffer, preventing the stack overflow. Users should update to a Linux kernel version that includes the fix identified by the provided commit hashes.
Description
A vulnerability in the Linux kernel's mms114 driver allows a stack out-of-bounds write due to improper validation of a device-reported packet size. The driver reads touch data into a fixed-size buffer but does not check if the packet size exceeds the buffer capacity. This can lead to overwriting critical stack data such as the stack canary, saved registers, and return address.
References
- git.kernel.org/stable/c/040843281eebfa110d08fd7fb083fe6cb55cea14 (opens in a new tab)
- git.kernel.org/stable/c/39b12daf1adb80f9595fdfe584961deb80860cbb (opens in a new tab)
- git.kernel.org/stable/c/d99ba93c35ff2d5276e9c2632967481bd53a79d0 (opens in a new tab)
- git.kernel.org/stable/c/5d2ea15ba03bf17ed143ff1a0995a4206edc3fb6 (opens in a new tab)
- git.kernel.org/stable/c/b78150729762d47c14fe29a2582bdca5568e62b8 (opens in a new tab)
- git.kernel.org/stable/c/8301c335305344d4da4ab9442b6a399dacfe5b8d (opens in a new tab)
- git.kernel.org/stable/c/f3d5e77b27fded71dcb97f409262bf0abba0410e (opens in a new tab)
- git.kernel.org/stable/c/66725039f7090afe14c31bd259e2059a68f04023 (opens in a new tab)