Answer in brief
CVE-2025-38115 records a High severity (CVSS 7.8) vulnerability in net_sched: sch_sfq: fix a potential crash on gso_skb handling. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a53851e2c3218aa30b77abd6e68cf1c371f15afe <c337efb20d6d9f9bbb4746f6b119917af5c886dc || >=a53851e2c3218aa30b77abd6e68cf1c371f15afe <b44f791f27b14c9eb6b907fbe51f2ba8bec32085 || >=a53851e2c3218aa30b77abd6e68cf1c371f15afe <5814a7fc3abb41f63f2d44c9d3ff9d4e62965b72 || >=a53851e2c3218aa30b77abd6e68cf1c371f15afe <9c19498bdd7cb9d854bd3c54260f71cf7408495e || >=a53851e2c3218aa30b77abd6e68cf1c371f15afe <b4e9bab6011b9559b7c157b16b91ae46d4d8c533 || >=a53851e2c3218aa30b77abd6e68cf1c371f15afe <d1bc80da75c789f2f6830df89d91fb2f7a509943 || >=a53851e2c3218aa30b77abd6e68cf1c371f15afe <82448d4dcd8406dec688632a405fdcf7f170ec69 || >=a53851e2c3218aa30b77abd6e68cf1c371f15afe <82ffbe7776d0ac084031f114167712269bf3d832 | c337efb20d6d9f9bbb4746f6b119917af5c886dc, b44f791f27b14c9eb6b907fbe51f2ba8bec32085, 5814a7fc3abb41f63f2d44c9d3ff9d4e62965b72, 9c19498bdd7cb9d854bd3c54260f71cf7408495e, b4e9bab6011b9559b7c157b16b91ae46d4d8c533, d1bc80da75c789f2f6830df89d91fb2f7a509943, 82448d4dcd8406dec688632a405fdcf7f170ec69, 82ffbe7776d0ac084031f114167712269bf3d832 |
| Linux/Linuxgeneric | 4.16 | Not reported |
Published upstream
Jul 3, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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 &
Quoted source text, attributed separately from HOL analysis.