cbcvebase.
CVE-2025-38115
published 2025-07-03

CVE-2025-38115: In the Linux kernel, the following vulnerability has been resolved: net_sched: sch_sfq: fix a potential crash on gso_skb handling SFQ has an assumption of…

medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
In the Linux kernel, the following vulnerability has been resolved: net_sched: sch_sfq: fix a potential crash on gso_skb handling SFQ has an assumption of always being able to queue at least one packet. However, after the blamed commit, sch->q.len can be inflated by packets in sch->gso_skb, and an enqueue() on an empty SFQ qdisc can be followed by an immediate drop. Fix sfq_drop() to properly clear q->tail in this situation. ip netns add lb ip link add dev to-lb type veth peer name in-lb netns lb ethtool -K to-lb tso off # force qdisc to requeue gso_skb ip netns exec lb ethtool -K in-lb gro on # enable NAPI ip link set dev to-lb up ip -netns lb link set dev in-lb up ip addr add dev to-lb 192.168.20.1/24 ip -netns lb addr add dev in-lb 192.168.20.2/24 tc qdisc replace dev to-lb root sfq limit 100 ip netns exec lb netserver netperf -H 192.168.20.2 -l 100 & netperf -H 192.168.20.2 -l 100 & netperf -H 192.168.20.2 -l 100 & netperf -H 192.168.20.2 -l 100 &

Affected

39 ranges· showing 25
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.147-1 (bookworm)linux 6.1.147-1 (bookworm)
debianlinux-6.1< linux 6.1.147-1 (bookworm)linux 6.1.147-1 (bookworm)
linuxlinux
linuxlinux>= a53851e2c3218aa30b77abd6e68cf1c371f15afe < c337efb20d6d9f9bbb4746f6b119917af5c886dcc337efb20d6d9f9bbb4746f6b119917af5c886dc
linuxlinux>= a53851e2c3218aa30b77abd6e68cf1c371f15afe < b44f791f27b14c9eb6b907fbe51f2ba8bec32085b44f791f27b14c9eb6b907fbe51f2ba8bec32085
linuxlinux>= a53851e2c3218aa30b77abd6e68cf1c371f15afe < 5814a7fc3abb41f63f2d44c9d3ff9d4e62965b725814a7fc3abb41f63f2d44c9d3ff9d4e62965b72
linuxlinux>= a53851e2c3218aa30b77abd6e68cf1c371f15afe < 9c19498bdd7cb9d854bd3c54260f71cf7408495e9c19498bdd7cb9d854bd3c54260f71cf7408495e
linuxlinux>= a53851e2c3218aa30b77abd6e68cf1c371f15afe < b4e9bab6011b9559b7c157b16b91ae46d4d8c533b4e9bab6011b9559b7c157b16b91ae46d4d8c533
linuxlinux>= a53851e2c3218aa30b77abd6e68cf1c371f15afe < d1bc80da75c789f2f6830df89d91fb2f7a509943d1bc80da75c789f2f6830df89d91fb2f7a509943
linuxlinux>= a53851e2c3218aa30b77abd6e68cf1c371f15afe < 82448d4dcd8406dec688632a405fdcf7f170ec6982448d4dcd8406dec688632a405fdcf7f170ec69
linuxlinux>= a53851e2c3218aa30b77abd6e68cf1c371f15afe < 82ffbe7776d0ac084031f114167712269bf3d83282ffbe7776d0ac084031f114167712269bf3d832
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.244-15.10.244-1
linuxlinux_kernel>= 0 < 6.1.147-16.1.147-1
linuxlinux_kernel>= 0 < 6.12.35-16.12.35-1
linuxlinux_kernel>= 0 < 6.12.35-16.12.35-1
linuxlinux_kernel>= 0 < 5.15.0-156.1665.15.0-156.166
linuxlinux_kernel>= 0 < 6.8.0-100.1006.8.0-100.100
linuxlinux_kernel>= 4.16 < 5.4.2955.4.295
linuxlinux_kernel>= 5.11 < 5.15.1865.15.186
linuxlinux_kernel>= 5.16 < 6.1.1426.1.142
linuxlinux_kernel>= 5.5 < 5.10.2395.10.239
linuxlinux_kernel>= 6.13 < 6.15.36.15.3
linuxlinux_kernel>= 6.2 < 6.6.946.6.94

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM