Unrated severityNVD Advisory· Published May 26, 2025· Updated Nov 3, 2025
net_sched: Flush gso_skb list too during ->change()
CVE-2025-37992
Description
In the Linux kernel, the following vulnerability has been resolved:
net_sched: Flush gso_skb list too during ->change()
Previously, when reducing a qdisc's limit via the ->change() operation, only the main skb queue was trimmed, potentially leaving packets in the gso_skb list. This could result in NULL pointer dereference when we only check sch->limit against sch->q.qlen.
This patch introduces a new helper, qdisc_dequeue_internal(), which ensures both the gso_skb list and the main queue are properly flushed when trimming excess packets. All relevant qdiscs (codel, fq, fq_codel, fq_pie, hhf, pie) are updated to use this helper in their ->change() routines.
Affected products
88- osv-coords86 versionspkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-rt_debug&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.6pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP7pkg:rpm/suse/kernel-coco_debug&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-livepatch-SLE15-SP6-RT_Update_13&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-livepatch-SLE15-SP6_Update_13&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-livepatch-SLE15-SP7-RT_Update_2&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-livepatch-SLE15-SP7_Update_2&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP7pkg:rpm/suse/kernel-source-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP7pkg:rpm/suse/kernel-syms-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_70&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
< 6.4.0-150600.23.60.3+ 85 more
- (no CPE)range: < 6.4.0-150600.23.60.3
- (no CPE)range: < 6.4.0-150600.23.60.4
- (no CPE)range: < 6.4.0-150600.8.43.1
- (no CPE)range: < 6.4.0-150600.23.60.4
- (no CPE)range: < 6.4.0-150600.23.60.5.150600.12.26.4
- (no CPE)range: < 6.4.0-150600.23.60.5
- (no CPE)range: < 6.4.0-150600.23.60.3
- (no CPE)range: < 6.4.0-150600.23.60.4
- (no CPE)range: < 6.4.0-150600.23.60.3
- (no CPE)range: < 6.4.0-150600.23.60.2
- (no CPE)range: < 6.4.0-150600.10.44.1
- (no CPE)range: < 6.4.0-150600.10.44.1
- (no CPE)range: < 6.4.0-150600.8.43.1
- (no CPE)range: < 6.4.0-150600.23.60.4
- (no CPE)range: < 6.4.0-150600.10.44.1
- (no CPE)range: < 6.4.0-150600.8.43.1
- (no CPE)range: < 6.4.0-150600.23.60.4
- (no CPE)range: < 6.4.0-150600.10.44.1
- (no CPE)range: < 6.4.0-150600.23.60.4
- (no CPE)range: < 6.4.0-150600.23.60.4
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.8.43.1
- (no CPE)range: < 6.4.0-150700.20.6.1
- (no CPE)range: < 6.4.0-15061.28.coco15sp6.1
- (no CPE)range: < 6.4.0-15061.28.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.60.5.150600.12.26.4
- (no CPE)range: < 6.4.0-150700.53.6.1.150700.17.6.1
- (no CPE)range: < 6.4.0-31.1.21.9
- (no CPE)range: < 6.4.0-31.1.21.9
- (no CPE)range: < 6.4.0-150600.23.60.5
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 4.12.14-122.266.1
- (no CPE)range: < 6.4.0-150600.23.60.5
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.23.60.5
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.23.60.5
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 4.12.14-122.266.1
- (no CPE)range: < 4.12.14-122.266.1
- (no CPE)range: < 6.4.0-150600.23.60.5
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-31.1
- (no CPE)range: < 6.4.0-31.1
- (no CPE)range: < 6.4.0-150600.23.60.3
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-31.1
- (no CPE)range: < 6.4.0-31.1
- (no CPE)range: < 1-150600.1.5.1
- (no CPE)range: < 1-150600.13.6.4
- (no CPE)range: < 1-150700.1.5.1
- (no CPE)range: < 1-150700.15.3.1
- (no CPE)range: < 6.4.0-150600.23.60.3
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.10.44.1
- (no CPE)range: < 6.4.0-34.1
- (no CPE)range: < 6.4.0-34.1
- (no CPE)range: < 6.4.0-150600.10.44.1
- (no CPE)range: < 6.4.0-150700.7.8.1
- (no CPE)range: < 6.4.0-150600.8.43.1
- (no CPE)range: < 6.4.0-150700.20.6.1
- (no CPE)range: < 6.4.0-15061.28.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.60.4
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 6.4.0-150600.23.60.4
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 4.12.14-122.266.1
- (no CPE)range: < 4.12.14-122.266.1
- (no CPE)range: < 6.4.0-31.1
- (no CPE)range: < 6.4.0-31.1
- (no CPE)range: < 6.4.0-34.1
- (no CPE)range: < 6.4.0-34.1
- (no CPE)range: < 6.4.0-150600.10.44.1
- (no CPE)range: < 6.4.0-150700.7.8.1
- (no CPE)range: < 6.4.0-150600.8.43.1
- (no CPE)range: < 6.4.0-150700.20.6.1
- (no CPE)range: < 6.4.0-15061.28.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.60.4
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 4.12.14-122.266.1
- (no CPE)range: < 4.12.14-122.266.1
- (no CPE)range: < 6.4.0-150600.10.44.1
- (no CPE)range: < 6.4.0-150700.7.8.1
- (no CPE)range: < 6.4.0-150600.23.60.4
- (no CPE)range: < 6.4.0-150700.53.6.1
- (no CPE)range: < 1-8.5.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
7- git.kernel.org/stable/c/2d3cbfd6d54a2c39ce3244f33f85c595844bd7b8mitre
- git.kernel.org/stable/c/a7d6e0ac0a8861f6b1027488062251a8e28150fdmitre
- git.kernel.org/stable/c/d1365ca80b012d8a7863e45949e413fb61fa4861mitre
- git.kernel.org/stable/c/d3336f746f196c6a53e0480923ae93939f047b6cmitre
- git.kernel.org/stable/c/d38939ebe0d992d581acb6885c1723fa83c1fb2cmitre
- git.kernel.org/stable/c/ea1132ccb112f51ba749c56a912f67970c2cd542mitre
- git.kernel.org/stable/c/fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76mitre
News mentions
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