SUSE: Linux Kernel Important Security Patch 2025:02687-1 CVE-2025-21702 DoS
suse
August 4, 2025
* bsc#1245776 * bsc#1245793 * bsc#1245797 Cross-References:
Summary
## This update for the Linux Kernel 5.3.18-150300_59_195 fixes several issues. The following security issues were fixed: * CVE-2025-37797: net_sched: hfsc: Fix a UAF vulnerability in class handling (bsc#1245793). * CVE-2025-37752: net_sched: sch_sfq: move the limit validation (bsc#1245776). * CVE-2025-21702: pfifo_tail_enqueue: Drop new packet when sch->limit == 0 (bsc#1245797). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * SUSE Linux Enterprise Live Patching 15-SP3 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2025-2687=1 * openSUSE Leap 15.3 zypper in -t patch SUSE-2025-2687=1 ## Package List:
Topics Covered
References
* bsc#1245776
* bsc#1245793
* bsc#1245797
Cross-
* CVE-2025-21702
* CVE-2025-37752
* CVE-2025-37797
CVSS scores:
* CVE-2025-21702 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
* CVE-2025-37752 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
* CVE-2025-37797 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:
* openSUSE Leap 15.3
* SUSE Linux Enterprise High Performance Computing 15 SP3
* SUSE Linux Enterprise Live Patching 15-SP3
* SUSE Linux Enterprise Micro 5.1
* SUSE Linux Enterprise Micro 5.2
* SUSE Linux Enterprise Server 15 SP3
* SUSE Linux Enterprise Server for SAP Applications 15 SP3
An update that solves three vulnerabilities can now be installed.
##
* https://www.suse.com/security/cve/CVE-2025-21702.html
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Severity
important
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Critical
Announcement ID: SUSE-SU-2025:02687-1
Release Date: 2025-08-04T17:04:20Z
Rating: important
Topics Covered
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