CVE-2025-38107

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-38107
In the Linux kernel, the following vulnerability has been resolved: net_sched: ets: fix a race in ets_qdisc_change() Gerrard Tai reported a race condition in ETS, 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.

7.0 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0383b25488a545be168744336847549d4a2d3d6c Patch
https://git.kernel.org/stable/c/073f64c03516bcfaf790f8edc772e0cfb8a84ec3 Patch
https://git.kernel.org/stable/c/0b479d0aa488cb478eb2e1d8868be946ac8afb4f Patch
https://git.kernel.org/stable/c/347867cb424edae5fec1622712c8dd0a2c42918f Patch
https://git.kernel.org/stable/c/d92adacdd8c2960be856e0b82acc5b7c5395fddb Patch
https://git.kernel.org/stable/c/eb7b74e9754e1ba2088f914ad1f57a778b11894b Patch
https://git.kernel.org/stable/c/fed94bd51d62d2e0e006aa61480e94e5cd0582b0 Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory Mailing List
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory Mailing List
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
History

16 Dec 2025, 17:02

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.0
First Time Linux
Debian
Debian debian Linux
Linux linux Kernel
CWE CWE-362
References () https://git.kernel.org/stable/c/0383b25488a545be168744336847549d4a2d3d6c - () https://git.kernel.org/stable/c/0383b25488a545be168744336847549d4a2d3d6c - Patch
References () https://git.kernel.org/stable/c/073f64c03516bcfaf790f8edc772e0cfb8a84ec3 - () https://git.kernel.org/stable/c/073f64c03516bcfaf790f8edc772e0cfb8a84ec3 - Patch
References () https://git.kernel.org/stable/c/0b479d0aa488cb478eb2e1d8868be946ac8afb4f - () https://git.kernel.org/stable/c/0b479d0aa488cb478eb2e1d8868be946ac8afb4f - Patch
References () https://git.kernel.org/stable/c/347867cb424edae5fec1622712c8dd0a2c42918f - () https://git.kernel.org/stable/c/347867cb424edae5fec1622712c8dd0a2c42918f - Patch
References () https://git.kernel.org/stable/c/d92adacdd8c2960be856e0b82acc5b7c5395fddb - () https://git.kernel.org/stable/c/d92adacdd8c2960be856e0b82acc5b7c5395fddb - Patch
References () https://git.kernel.org/stable/c/eb7b74e9754e1ba2088f914ad1f57a778b11894b - () https://git.kernel.org/stable/c/eb7b74e9754e1ba2088f914ad1f57a778b11894b - Patch
References () https://git.kernel.org/stable/c/fed94bd51d62d2e0e006aa61480e94e5cd0582b0 - () https://git.kernel.org/stable/c/fed94bd51d62d2e0e006aa61480e94e5cd0582b0 - Patch
References () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html - () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html - Third Party Advisory, Mailing List
References () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - Third Party Advisory, Mailing List
CPE cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:*

03 Nov 2025, 18:16

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html -
  • () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html -
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net_sched: ets: corrige una ejecución en ets_qdisc_change() Gerrard Tai informó de una condición de ejecución en ETS, siempre que el temporizador de perturbación SFQ se dispara en el momento equivocado. La ejecución es la siguiente: CPU 0 CPU 1 [1]: raíz de bloqueo [2]: qdisc_tree_flush_backlog() [3]: raíz de desbloqueo | | [5]: raíz de bloqueo | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() Esto se puede abusar para desbordar el qlen de un padre. Llamar a qdisc_purge_queue() en lugar de qdisc_tree_flush_backlog() debería corregir la ejecución, porque todos los paquetes se purgarán del qdisc antes de liberar el bloqueo.

03 Jul 2025, 09:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-07-03 09:15

Updated : 2025-12-16 17:02

NVD link : CVE-2025-38107

Mitre link : CVE-2025-38107

CVE.ORG link : CVE-2025-38107

JSON object : View

Products Affected

debian

  • debian_linux

linux

  • linux_kernel
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')