Riskcovery

CVE-2026-31677

crypto: af_alg - limit RX SG extraction by receive buffer budget

State
Published
Severity
Not scored
Published
Apr 25, 2026
Updated
Oct 30, 2026
Reserved
Mar 9, 2026

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • e870456d8e7c8d57c059ea479b5aadbb55ff4c3a to before 960c56743988d8ce9ff9b5d770dbeb5f64823a23Affected
  • e870456d8e7c8d57c059ea479b5aadbb55ff4c3a to before 7e345de2e69475430af85e09210795d8eb8e719cAffected
  • e870456d8e7c8d57c059ea479b5aadbb55ff4c3a to before 9bf3e6ccfdcfe56ae3190d1ae987dacf1cfef4f9Affected
  • e870456d8e7c8d57c059ea479b5aadbb55ff4c3a to before 07c6f6ffe29009426f0bd4d3cfbb6308b8ea8453Affected
  • e870456d8e7c8d57c059ea479b5aadbb55ff4c3a to before 4a264b2614c73c96666e196bbabe0cead52bdba7Affected
  • e870456d8e7c8d57c059ea479b5aadbb55ff4c3a to before 8eceab19eba9dcbfd2a0daec72e1bf48aa100170Affected
LinuxLinux
  • 4.14Affected
  • before 4.14Not affected
  • 6.1.191 through 6.1.*Not affected
  • 6.6.160 through 6.6.*Not affected
  • 6.12.83 through 6.12.*Not affected
  • 6.18.24 through 6.18.*Not affected
  • 6.19.14 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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