Answer in brief
CVE-2026-99062 records a Unknown severity vulnerability in vsock/virtio: account only unread bytes in read_skb(). 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 | >=7893a41deaf28b53036d4ea7cd9f7d54e8874dfc <e4a0028b0d54b2c45e1dc8c0dd95fe3e9236f55b || >=45ca7e9f0730ae36fc610e675b990e9cc9ca0714 <38bad3930b1185dd6c98db3dd342ddc123c6f3ef || >=45ca7e9f0730ae36fc610e675b990e9cc9ca0714 <dd4b2f88ee517f9629d0d3dbfced02ffbc33e2dc || >=45ca7e9f0730ae36fc610e675b990e9cc9ca0714 <a463f55c791b96cfd12df8b10ea737d45c80bb18 || 17bada47e9ac3621c28e0ffa89af8279fedea00a || >=6.12.34 <6.12.113 || >=6.15.3 <6.16 | e4a0028b0d54b2c45e1dc8c0dd95fe3e9236f55b, 38bad3930b1185dd6c98db3dd342ddc123c6f3ef, dd4b2f88ee517f9629d0d3dbfced02ffbc33e2dc, a463f55c791b96cfd12df8b10ea737d45c80bb18, 6.12.113, 6.16 |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 23, 2026
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: account only unread bytes in read_skb() After a partial stream receive, rx_bytes tracks the unread suffix while buf_used and peer credit still cover the whole packet. virtio_transport_read_skb() dequeues that packet but passes pkt_len for both counters, underflowing rx_bytes. On a connected CID_LOCAL stream with an SK_SKB verdict, a 40-byte read from a 100-byte packet made SIOCINQ report -40, an empty recv return ELOOP, and poll report the empty socket readable. After verdict detach, receiving 40 bytes wrapped the counter to zero and hid those queued bytes until one more byte arrived. The fixed run kept the counter balanced and exposed all queued data immediately. This was found during an LLM-assisted manual source audit of VSOCK receive accounting while re-evaluating virtio_transport_read_skb() after CVE-2024-50169. Subtract only skb->len minus the VSOCK offset from rx_bytes. Retain the full packet length for buf_used and peer credit.
Quoted source text, attributed separately from HOL analysis.