Answer in brief
CVE-2026-74736 records a High severity (CVSS 7.8) vulnerability in net/sched: cls_bpf: reject dev-bound programs bound to a different device. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <ec5a552f4b2d841c6c021752450716e1a9676661 || >=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <daf546ab5763ce6a18280cb4db060e836c515301 || >=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <adb3e7c26a51a10d94a241c6de7a81a2863dcacf || >=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <5685bbbd3cbfbeb0de96a1d275a5ca073dfebb5e || >=2b3486bc2d237ec345b3942b7be5deabf8c8fed1 <120977e2c096deea4e866e4273be9220b957c29e | ec5a552f4b2d841c6c021752450716e1a9676661, daf546ab5763ce6a18280cb4db060e836c515301, adb3e7c26a51a10d94a241c6de7a81a2863dcacf, 5685bbbd3cbfbeb0de96a1d275a5ca073dfebb5e, 120977e2c096deea4e866e4273be9220b957c29e |
| Linux/Linuxgeneric | 6.3 | Not reported |
Published upstream
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 26, 2026
In the Linux kernel, the following vulnerability has been resolved: net/sched: cls_bpf: reject dev-bound programs bound to a different device cls_bpf_prog_from_efd() obtained a SCHED_CLS program via bpf_prog_get_type_dev() but never verified that a device-bound (offloaded) program's bound netdev matches the TC netdev the classifier is being attached to. This let a program loaded with prog_ifindex for device A be attached via cls_bpf + skip_sw to device B; deleting device A then destroyed the program's offload state while it was still attached to device B, triggering a netdevsim WARN (panic with panic_on_warn=1). Mirror the XDP attach path (net/core/dev.c) and reject the attach with -EINVAL when a dev-bound program's bound device does not match the target device.
Quoted source text, attributed separately from HOL analysis.