Answer in brief
CVE-2026-64054 records a High severity (CVSS 7.8) vulnerability in net: shaper: reject duplicate leaves in GROUP request. 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:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e <5098b223f0f0c5c18a3884a8b0ea5bd4a0c7bd75 || >=5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e <31767bf852b59f05125b58a17007e4cd1ea9eb2e || >=5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e <a9a2fa1da619f276580b0d4c5d12efac89e8642b | 5098b223f0f0c5c18a3884a8b0ea5bd4a0c7bd75, 31767bf852b59f05125b58a17007e4cd1ea9eb2e, a9a2fa1da619f276580b0d4c5d12efac89e8642b |
| Linux/Linuxgeneric | 6.13 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 8, 2026
In the Linux kernel, the following vulnerability has been resolved: net: shaper: reject duplicate leaves in GROUP request net_shaper_nl_group_doit() does not deduplicate NET_SHAPER_A_LEAVES entries. When userspace supplies the same leaf handle twice, the same old-parent pointer lands twice in old_nodes[]. The cleanup loop double frees the parent. Of course the same parent may still be in old_nodes[] twice if we are moving multiple of its leaves. Note that this patch also implicitly fixes the fact that the i >= leaves_count path forgets to set ret.
Quoted source text, attributed separately from HOL analysis.