cbcvebase.
CVE-2025-37992
published 2025-05-26

CVE-2025-37992: 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…

medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
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

35 ranges· showing 25
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.140-1 (bookworm)linux 6.1.140-1 (bookworm)
debianlinux-6.1< linux 6.1.140-1 (bookworm)linux 6.1.140-1 (bookworm)
linuxlinux
linuxlinux>= 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 < ea1132ccb112f51ba749c56a912f67970c2cd542ea1132ccb112f51ba749c56a912f67970c2cd542
linuxlinux>= 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 < d3336f746f196c6a53e0480923ae93939f047b6cd3336f746f196c6a53e0480923ae93939f047b6c
linuxlinux>= 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 < d38939ebe0d992d581acb6885c1723fa83c1fb2cd38939ebe0d992d581acb6885c1723fa83c1fb2c
linuxlinux>= 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 < a7d6e0ac0a8861f6b1027488062251a8e28150fda7d6e0ac0a8861f6b1027488062251a8e28150fd
linuxlinux>= 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 < d1365ca80b012d8a7863e45949e413fb61fa4861d1365ca80b012d8a7863e45949e413fb61fa4861
linuxlinux>= 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 < fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76fe88c7e4fc2c1cd75a278a15ffbf1689efad4e76
linuxlinux>= 76e3cc126bb223013a6b9a0e2a51238d1ef2e409 < 2d3cbfd6d54a2c39ce3244f33f85c595844bd7b82d3cbfd6d54a2c39ce3244f33f85c595844bd7b8
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.244-15.10.244-1
linuxlinux_kernel>= 0 < 6.1.140-16.1.140-1
linuxlinux_kernel>= 0 < 6.12.30-16.12.30-1
linuxlinux_kernel>= 0 < 6.12.30-16.12.30-1
linuxlinux_kernel>= 0 < 5.15.0-144.1575.15.0-144.157
linuxlinux_kernel>= 0 < 6.8.0-100.1006.8.0-100.100
linuxlinux_kernel>= 3.5 < 5.10.2385.10.238
linuxlinux_kernel>= 5.11 < 5.15.1845.15.184
linuxlinux_kernel>= 5.16 < 6.1.1406.1.140
linuxlinux_kernel>= 6.13 < 6.14.86.14.8
linuxlinux_kernel>= 6.2 < 6.6.926.6.92
linuxlinux_kernel>= 6.7 < 6.12.306.12.30
msrcazl3_kernel_6.6.85.1-4_on_azure_linux_3.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH