CVE-2025-37914

HIGH EPSS 7.0%
Published May 20, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 20, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: net_sched: ets: Fix double list add in class with netem as child qdisc As described in Gerrard's report [1], there are use cases where a netem child qdisc will make the parent qdisc's enqueue callback reentrant. In the case of ets, there won't be a UAF, but the code will add the same classifier to the list twice, which will cause memory corruption. In addition to checking for qlen being zero, this patch checks whether the class was already added to the active_list (cl_is_active) before doing the addition to cater for the reentrant case. [1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
7.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-415

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥5.6  –  <5.10.238
linuxlinux_kernel*≥5.11  –  <5.15.182
linuxlinux_kernel*≥5.16  –  <6.1.138
linuxlinux_kernel*≥6.2  –  <6.6.90
linuxlinux_kernel*≥6.7  –  <6.12.28
linuxlinux_kernel*≥6.13  –  <6.14.6
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
debiandebian_linux11.0any

References 9

  • git.kernel.org https://git.kernel.org/stable/c/1a6d0c00fa07972384b0c308c72db091d49988b6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1f01e9f961605eb397c6ecd1d7b0233dfbf9077c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/24388ba0a1b1b6d4af1b205927ac7f7b119ee4ea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/554acc5a2ea9703e08023eb9a003f9e5a830a502
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/72c3da7e6ceb74e74ddbb5a305a35c9fdfcac6e3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9efb6a0fa88e0910d079fdfeb4f7ce4d4ac6c990
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bc321f714de693aae06e3786f88df2975376d996
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html
    Mailing List
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    Mailing List

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1a6d0c00fa07972384b0c308c72db091d49988b6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1f01e9f961605eb397c6ecd1d7b0233dfbf9077c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/24388ba0a1b1b6d4af1b205927ac7f7b119ee4ea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/554acc5a2ea9703e08023eb9a003f9e5a830a502
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/72c3da7e6ceb74e74ddbb5a305a35c9fdfcac6e3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9efb6a0fa88e0910d079fdfeb4f7ce4d4ac6c990
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bc321f714de693aae06e3786f88df2975376d996
    Patch