Answer in brief
CVE-2026-31677 records a Unknown severity vulnerability in crypto: af_alg - limit RX SG extraction by receive buffer budget. 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 | >=e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <7e345de2e69475430af85e09210795d8eb8e719c || >=e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <9bf3e6ccfdcfe56ae3190d1ae987dacf1cfef4f9 || >=e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <07c6f6ffe29009426f0bd4d3cfbb6308b8ea8453 || >=e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <4a264b2614c73c96666e196bbabe0cead52bdba7 || >=e870456d8e7c8d57c059ea479b5aadbb55ff4c3a <8eceab19eba9dcbfd2a0daec72e1bf48aa100170 | 7e345de2e69475430af85e09210795d8eb8e719c, 9bf3e6ccfdcfe56ae3190d1ae987dacf1cfef4f9, 07c6f6ffe29009426f0bd4d3cfbb6308b8ea8453, 4a264b2614c73c96666e196bbabe0cead52bdba7, 8eceab19eba9dcbfd2a0daec72e1bf48aa100170 |
| Linux/Linuxgeneric | 4.14 | Not reported |
Published upstream
Apr 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 21, 2026
In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - limit RX SG extraction by receive buffer budget Make af_alg_get_rsgl() limit each RX scatterlist extraction to the remaining receive buffer budget. af_alg_get_rsgl() currently uses af_alg_readable() only as a gate before extracting data into the RX scatterlist. Limit each extraction to the remaining af_alg_rcvbuf(sk) budget so that receive-side accounting matches the amount of data attached to the request. If skcipher cannot obtain enough RX space for at least one chunk while more data remains to be processed, reject the recvmsg call instead of rounding the request length down to zero.
Quoted source text, attributed separately from HOL analysis.