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VulnerabilityPublished Updated

CVE-2025-38636: Linux kernel · rv: Use strings in da monitors tracepoints

Source GCVE Database

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Authoritative record:CVE-2025-38636· Low

Not known to be exploited · CVSS 7.1 Low · fixed in dcae71222c8b9e5b5dd88a2d67347dedf10e68c6 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 16:33 UTC

CVSS 3.1 base score
7.1Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
Patch
Available – fixed in dcae71222c8b9e5b5dd88a2d67347dedf10e68c6, cb8de6f5ed5c43f7387615bbe601d2a4a31b7b35, 665ca03e93cee01baadc7b5eaee21b9d892e0dab +2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Aug 2025

  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 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 792575348ff70e05c6040d02fce38e949ef92c37, < dcae71222c8b9e5b5dd88a2d67347dedf10e68c6
Fixed in
  • dcae71222c8b9e5b5dd88a2d67347dedf10e68c6
LinuxLinuxAffected
  • ≥ 792575348ff70e05c6040d02fce38e949ef92c37, < cb8de6f5ed5c43f7387615bbe601d2a4a31b7b35
Fixed in
  • cb8de6f5ed5c43f7387615bbe601d2a4a31b7b35
LinuxLinuxAffected
  • ≥ 792575348ff70e05c6040d02fce38e949ef92c37, < 665ca03e93cee01baadc7b5eaee21b9d892e0dab
Fixed in
  • 665ca03e93cee01baadc7b5eaee21b9d892e0dab
LinuxLinuxAffected
  • ≥ 792575348ff70e05c6040d02fce38e949ef92c37, < 7f904ff6e58d398c4336f3c19c42b338324451f7
Fixed in
  • 7f904ff6e58d398c4336f3c19c42b338324451f7
LinuxLinuxAffected
  • ≥ 792575348ff70e05c6040d02fce38e949ef92c37, < 0ebc70d973ce7a81826b5c4f55f743e07f5864d9
Fixed in
  • 0ebc70d973ce7a81826b5c4f55f743e07f5864d9
LinuxLinuxAffected
  • =6.0
Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: rv: Use strings in da monitors tracepoints Using DA monitors tracepoints with KASAN enabled triggers the following warning: BUG: KASAN: global-out-of-bounds in do_trace_event_raw_event_event_da_monitor+0xd6/0x1a0 Read of size 32 at addr ffffffffaada8980 by task ... Call Trace: <TASK> [...] do_trace_event_raw_event_event_da_monitor+0xd6/0x1a0 ? __pfx_do_trace_event_raw_event_event_da_monitor+0x10/0x10 ? trace_event_sncid+0x83/0x200 trace_event_sncid+0x163/0x200 [...] The buggy address belongs to the variable: automaton_snep+0x4e0/0x5e0 This is caused by the tracepoints reading 32 bytes __array instead of __string from the automata definition. Such strings are literals and reading 32 bytes ends up in out of bound memory accesses (e.g. the next automaton's data in this case). The error is harmless as, while printing the string, we stop at the null terminator, but it should still be fixed. Use the __string facilities while defining the tracepoints to avoid reading out of bound memory.

References

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