CVE-2025-38115 Affecting kernel6.12-debuginfo-common-x86_64 package, versions <0:6.12.35-55.103.amzn2023


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (9th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNEL612DEBUGINFOCOMMONX8664-11481405
  • published5 Aug 2025
  • disclosed3 Jul 2025

Introduced: 3 Jul 2025

CVE-2025-38115  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel6.12-debuginfo-common-x86_64 to version 0:6.12.35-55.103.amzn2023 or higher.
This issue was patched in ALAS2023-2025-1080.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel6.12-debuginfo-common-x86_64 package and not the kernel6.12-debuginfo-common-x86_64 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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 &

CVSS Base Scores

version 3.1