Answer in brief
CVE-2026-74616 records a Unknown severity vulnerability in xdp: reject clones that overrun skb_shared_info tailroom. 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.
A CVSS score is not reported in the current record. 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 | >=e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <58408982fa39f9758124cec169f42854d6f98f35 || >=e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <685edea27ac68d08fe4dbd3de74b858d2ad8e830 || >=e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <ba13763d667e008e185fedf592d53846a5b457d1 || >=e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <ef4b7c7046d29a67090de15af0da0d1ae8d1b192 || >=e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <fab820f1691a9e26d9031f18aae1e9ce09078f92 || >=e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <f463b6f4957c9c3fd1c75f8d3e5af4879fa609c0 || >=e624d4ed4aa8cc3c69d1359b0aaea539203ed266 <e48e8edbef2eb824201495daa5234560f632b23c | 58408982fa39f9758124cec169f42854d6f98f35, 685edea27ac68d08fe4dbd3de74b858d2ad8e830, ba13763d667e008e185fedf592d53846a5b457d1, ef4b7c7046d29a67090de15af0da0d1ae8d1b192, fab820f1691a9e26d9031f18aae1e9ce09078f92, f463b6f4957c9c3fd1c75f8d3e5af4879fa609c0, e48e8edbef2eb824201495daa5234560f632b23c |
| Linux/Linuxgeneric | 5.14 | Not reported |
Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 22, 2026
In the Linux kernel, the following vulnerability has been resolved: xdp: reject clones that overrun skb_shared_info tailroom xdpf_clone() clones broadcast copies into a single page and sets frame_sz to PAGE_SIZE. __xdp_build_skb_from_frame() later treats that page like a normal XDP frame and expects the usual skb_shared_info tailroom at the end of the buffer. The current check only rejects frames whose linear xdp_frame header, headroom, and packet data exceed PAGE_SIZE. A source frame backed by a larger allocation can still satisfy that check while extending into the clone's required shared-info area. When such a clone is converted back into an skb, build_skb_around() places skb_shared_info over live packet bytes and later writes can corrupt XDP return metadata. Reject clones unless their linear area fits inside SKB_WITH_OVERHEAD(PAGE_SIZE), matching the tailroom requirement already enforced by the XDP-to-skb conversion path.
Quoted source text, attributed separately from HOL analysis.