CVE-2025-38108

HIGH EPSS 2.9%
Published Jul 3, 202512mo ago · Modified Jun 17, 20261w ago
7.0 CVSS 3.1
High
Find Similar
Published Jul 3, 2025 12mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: net_sched: red: fix a race in __red_change() Gerrard Tai reported a race condition in RED, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.

CVSS Details

Base Score
7.0
Exploitability
1.0
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-362

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥5.0  –  <5.4.295
linuxlinux_kernel*≥5.5  –  <5.10.239
linuxlinux_kernel*≥5.11  –  <5.15.186
linuxlinux_kernel*≥5.16  –  <6.1.142
linuxlinux_kernel*≥6.2  –  <6.6.94
linuxlinux_kernel*≥6.7  –  <6.12.34
linuxlinux_kernel*≥6.13  –  <6.15.3
linuxlinux_kernel6.16any
debiandebian_linux11.0any

References 10

  • git.kernel.org https://git.kernel.org/stable/c/110a47efcf23438ff8d31dbd9c854fae2a48bf98
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2790c4ec481be45a80948d059cd7c9a06bc37493
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2a71924ca4af59ffc00f0444732b6cd54b153d0e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/444ad445df5496a785705019268a8a84b84484bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4b755305b2b0618e857fdadb499365b5f2e478d1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/85a3e0ede38450ea3053b8c45d28cf55208409b8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a1bf6a4e9264a685b0e642994031f9c5aad72414
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f569984417a4e12c67366e69bdcb752970de921d
    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/110a47efcf23438ff8d31dbd9c854fae2a48bf98
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2790c4ec481be45a80948d059cd7c9a06bc37493
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2a71924ca4af59ffc00f0444732b6cd54b153d0e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/444ad445df5496a785705019268a8a84b84484bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4b755305b2b0618e857fdadb499365b5f2e478d1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/85a3e0ede38450ea3053b8c45d28cf55208409b8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a1bf6a4e9264a685b0e642994031f9c5aad72414
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f569984417a4e12c67366e69bdcb752970de921d
    Patch