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VulnerabilityPublished Updated

CVE-2026-64565: Linux kernel · Input: ims-pcu – fix heap-buffer-overflow in ims_pcu_process_data()

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 3 Nov 2026, 18:31 UTC

Severity
High

Rated High 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 4 Aug 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 is available that adds bounds checking on the read_pos index in ims_pcu_process_data(). The fix discards packets that exceed IMS_PCU_BUF_SIZE, logs a warning, and resets the parser state to prevent buffer overflow. Users should apply the official Linux kernel update that includes this patch to remediate the vulnerability.

Description

A heap buffer overflow vulnerability exists in the Linux kernel's ims-pcu driver due to improper bounds checking in the ims_pcu_process_data() function. A malicious USB device can send oversized packets that cause the read_pos index to overflow and be manipulated, leading to a heap buffer overflow in ims_pcu_handle_response(). This can result in control flow hijacking when the driver calls complete() on a manipulated pointer. The issue is fixed by adding bounds checks to discard oversized packets and reset the parser state.

References

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