Kernel panic via out-of-bounds slot bitmap access
Published Jul 25, 2026 · Updated Jul 25, 2026
Out-of-bounds bit access in affected Linux Kernel releases allows physically proximate attackers to corrupt kernel memory via HID data. mt_release_contacts clears slot-indexed bits in the single-word mt_io_flags using device-reported maxcontacts values up to 255, overwriting adjacent struct mt_device members. A malicious USB or Bluetooth multitouch peripheral needs no host privileges and can trigger a null dereference and kernel panic from timer context.
Summary
What happened
Out-of-bounds bit access in affected Linux Kernel releases allows physically proximate attackers to corrupt kernel memory via HID data. mt_release_contacts clears slot-indexed bits in the single-word mt_io_flags using device-reported maxcontacts values up to 255, overwriting adjacent struct mt_device members. A malicious USB or Bluetooth multitouch peripheral needs no host privileges and can trigger a null dereference and kernel panic from timer context.
The record
- CVE
- CVE-2026-64364
- Published
- Jul 25, 2026
- Updated
- Jul 25, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- CWE-476, T1200, T1499
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 25, 2026CVE publishedPublication date reported by the CVE source.
- Jul 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=46f781e0d151844589dc2125c8cce3300546f92a <37daa8c96bd563d03150e23f094cb60703594a6d
- Affected versionversion=46f781e0d151844589dc2125c8cce3300546f92a <6493ebf9489efef0105078377b973ab33d51af22
- Affected versionversion=46f781e0d151844589dc2125c8cce3300546f92a <8813b0612275cc61fe9e6603d0ee019247ade6be
- Affected versionversion=5.10.246 <5.10.261
- Affected versionversion=5.15.196 <5.15.212
- Affected versionversion=59bd04163e6451b9c7275277882ed9f4abfa2051
- Affected versionversion=6.1.158 <6.1.178
- Affected versionversion=6.12.55 <6.12.97
- Affected versionversion=6.17.5 <6.18
- Affected versionversion=6.18
- Affected versionversion=6.6.114 <6.6.145
- Affected versionversion=6acfe25968913788d30ec0eedd80178c4ea3f1d0 <b5c037d6b807017e74a115288f81bc9cd5a5aab8
- Affected versionversion=77711d850bed75ae7142c3d1f22c1a8b4d049c33 <152983d87387f6a8ae72b73474cfa55fbcf1ec75
- Affected versionversion=d280c138e66be87d1fccfed42593f02fdb893905 <a6d5ce2e1a2d7bf189bde8a659d04b65f0b0725d
- Affected versionversion=f32fea4c0234c971c12e46d76612cdc2dd4bb046 <e24918ee67c4dc3d20d4670750e46e9b160365f4
- Affected versionversion=fc488f675344931ffab6a51c43691065ec006567 <12e90656e330ff8bbaf2f29c535fdb8a11cc6f55
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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