CVE - CVE-2025-38115

CVE-ID
CVE-2025-38115	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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 &
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/5814a7fc3abb41f63f2d44c9d3ff9d4e62965b72 URL:https://git.kernel.org/stable/c/5814a7fc3abb41f63f2d44c9d3ff9d4e62965b72 MISC:https://git.kernel.org/stable/c/82448d4dcd8406dec688632a405fdcf7f170ec69 URL:https://git.kernel.org/stable/c/82448d4dcd8406dec688632a405fdcf7f170ec69 MISC:https://git.kernel.org/stable/c/82ffbe7776d0ac084031f114167712269bf3d832 URL:https://git.kernel.org/stable/c/82ffbe7776d0ac084031f114167712269bf3d832 MISC:https://git.kernel.org/stable/c/9c19498bdd7cb9d854bd3c54260f71cf7408495e URL:https://git.kernel.org/stable/c/9c19498bdd7cb9d854bd3c54260f71cf7408495e MISC:https://git.kernel.org/stable/c/b44f791f27b14c9eb6b907fbe51f2ba8bec32085 URL:https://git.kernel.org/stable/c/b44f791f27b14c9eb6b907fbe51f2ba8bec32085 MISC:https://git.kernel.org/stable/c/b4e9bab6011b9559b7c157b16b91ae46d4d8c533 URL:https://git.kernel.org/stable/c/b4e9bab6011b9559b7c157b16b91ae46d4d8c533 MISC:https://git.kernel.org/stable/c/c337efb20d6d9f9bbb4746f6b119917af5c886dc URL:https://git.kernel.org/stable/c/c337efb20d6d9f9bbb4746f6b119917af5c886dc MISC:https://git.kernel.org/stable/c/d1bc80da75c789f2f6830df89d91fb2f7a509943 URL:https://git.kernel.org/stable/c/d1bc80da75c789f2f6830df89d91fb2f7a509943
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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