CVE-2025-38539

MEDIUM EPSS 4.5%
Published Aug 16, 202510mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Aug 16, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: tracing: Add down_write(trace_event_sem) when adding trace event When a module is loaded, it adds trace events defined by the module. It may also need to modify the modules trace printk formats to replace enum names with their values. If two modules are loaded at the same time, the adding of the event to the ftrace_events list can corrupt the walking of the list in the code that is modifying the printk format strings and crash the kernel. The addition of the event should take the trace_event_sem for write while it adds the new event. Also add a lockdep_assert_held() on that semaphore in __trace_add_event_dirs() as it iterates the list.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
4.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 14

VendorProductVersionRange
linuxlinux_kernel*≥2.6.31  –  <5.4.297
linuxlinux_kernel*≥5.5  –  <5.10.241
linuxlinux_kernel*≥5.11  –  <5.15.190
linuxlinux_kernel*≥5.16  –  <6.1.147
linuxlinux_kernel*≥6.2  –  <6.6.100
linuxlinux_kernel*≥6.7  –  <6.12.40
linuxlinux_kernel*≥6.13  –  <6.15.8
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
debiandebian_linux11.0any

References 10

  • git.kernel.org https://git.kernel.org/stable/c/33e20747b47ddc03569b6bc27a2d6894c1428182
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6bc94f20a4c304997288f9a45278c9d0c06987d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/70fecd519caad0c1741c3379d5348c9000a5b29d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca60064ea03f14e06c763de018403cb56ba3207d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/db45632479ceecb669612ed8dbce927e3c6279fc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e70f5ee4c8824736332351b703c46f9469ed7f6c
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    Mailing ListThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/33e20747b47ddc03569b6bc27a2d6894c1428182
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6bc94f20a4c304997288f9a45278c9d0c06987d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/70fecd519caad0c1741c3379d5348c9000a5b29d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca60064ea03f14e06c763de018403cb56ba3207d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/db45632479ceecb669612ed8dbce927e3c6279fc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e70f5ee4c8824736332351b703c46f9469ed7f6c
    Patch