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VulnerabilityPublished

CVE-2026-64528: Linux kernel · tty: serial: samsung: Remove redundant port lock acquisition in rx helpers

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 3 Nov 2026, 18:43 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 3 Nov 2026.

What to do

AI-suggested

A fix has been implemented that removes the redundant spinlock acquisition in the rx helper functions of the Samsung serial driver. Users should apply the official Linux kernel update containing this patch to resolve the deadlock issue. No additional mitigation steps are indicated.

Description

A deadlock vulnerability was identified and fixed in the Linux kernel's Samsung serial driver. The issue arises from redundant acquisition of a non-recursive spinlock in serial receive helper functions when console flow control is enabled, causing a deadlock on the same CPU. The fix removes the redundant lock acquisition to prevent this deadlock.

References

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