Linux Kernel up to 6.15-rc1 codel qdisc_tree_reduce_backlog privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.15-rc1. It has been classified as problematic. Affected is the function qdisc_tree_reduce_backlog of the component codel. This manipulation causes an unknown weakness. This vulnerability is tracked as CVE-2025-37798. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel up to 6.15-rc1. Affected by this vulnerability is the function qdisc_tree_reduce_backlog of the component codel. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog() After making all ->qlen_notify() callbacks idempotent, now it is safe to remove the check of qlen!=0 from both fq_codel_dequeue() and codel_qdisc_dequeue().

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2025-37798 since 04/16/2025. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 237088 (SUSE SLED15 / SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2025:01614-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3 or 6.15-rc2 eliminates this vulnerability. Applying the patch 829c49b6b2ff45b043739168fd1245e4e1a91a30/2f9761a94bae33d26e6a81b31b36e7d776d93dc1/4d55144b12e742404bb3f8fee6038bafbf45619d/e73c838c80dccb9e4f19becc11d9f3cb4a27d483/a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31/342debc12183b51773b3345ba267e9263bdfaaef is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (237088) and CERT Bund (WID-SEC-2025-0932). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway
  • IBM QRadar SIEM

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 237088
Nessus Name: SUSE SLED15 / SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2025:01614-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.1.135/6.6.88/6.12.24/6.13.12/6.14.3/6.15-rc2
Patch: 829c49b6b2ff45b043739168fd1245e4e1a91a30/2f9761a94bae33d26e6a81b31b36e7d776d93dc1/4d55144b12e742404bb3f8fee6038bafbf45619d/e73c838c80dccb9e4f19becc11d9f3cb4a27d483/a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31/342debc12183b51773b3345ba267e9263bdfaaef

Timelineinfo

04/16/2025 🔍
05/02/2025 +16 days 🔍
05/02/2025 +0 days 🔍
01/31/2026 +274 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-37798 (🔍)
GCVE (CVE): GCVE-0-2025-37798
GCVE (VulDB): GCVE-100-307207
CERT Bund: WID-SEC-2025-0932 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/02/2025 19:46
Updated: 01/31/2026 19:03
Changes: 05/02/2025 19:46 (57), 05/23/2025 20:22 (2), 08/02/2025 13:47 (7), 08/28/2025 23:03 (1), 11/07/2025 13:24 (11), 01/31/2026 19:03 (1)
Complete: 🔍
Cache ID: 216::103

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