CVE-2025-37913

HIGH EPSS 7.3%
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: qfq: 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 qfq, there won't be a UAF, but the code will add the same classifier to the list twice, which will cause memory corruption. This patch checks whether the class was already added to the agg->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
7.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-415

Affected Products 19

VendorProductVersionRange
linuxlinux_kernel*≥5.0.1  –  <5.4.294
linuxlinux_kernel*≥5.5  –  <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_kernel5.0any
linuxlinux_kernel5.0any
linuxlinux_kernel5.0any
linuxlinux_kernel5.0any
linuxlinux_kernel5.0any
linuxlinux_kernel5.0any
linuxlinux_kernel5.0any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
debiandebian_linux11.0any

References 10

  • git.kernel.org https://git.kernel.org/stable/c/005a479540478a820c52de098e5e767e63e36f0a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/041f410aec2c1751ee22b8b73ba05d38c3a6a602
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0aa23e0856b7cedb3c88d8e3d281c212c7e4fbeb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0bf32d6fb1fcbf841bb9945570e0e2a70072c00f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/370218e8ce711684acc4cdd3cc3c6dd7956bc165
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/53bc0b55178bd59bdd4bcd16349505cabf54b1a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a43783119e01849fbf2fe8855634e8989b240cb4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f139f37dcdf34b67f5bf92bc8e0f7f6b3ac63aa4
    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/005a479540478a820c52de098e5e767e63e36f0a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/041f410aec2c1751ee22b8b73ba05d38c3a6a602
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0aa23e0856b7cedb3c88d8e3d281c212c7e4fbeb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0bf32d6fb1fcbf841bb9945570e0e2a70072c00f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/370218e8ce711684acc4cdd3cc3c6dd7956bc165
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/53bc0b55178bd59bdd4bcd16349505cabf54b1a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a43783119e01849fbf2fe8855634e8989b240cb4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f139f37dcdf34b67f5bf92bc8e0f7f6b3ac63aa4
    Patch