CVE-2026-31677 Affecting kernel-devel-matched package, versions <0:5.14.0-687.5.3.el9_8


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.11% (2nd percentile)

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  • Snyk IDSNYK-ORACLE9-KERNELDEVELMATCHED-17431161
  • published23 Jun 2026
  • disclosed25 Apr 2026

Introduced: 25 Apr 2026

CVE-2026-31677  (opens in a new tab)

How to fix?

Upgrade Oracle:9 kernel-devel-matched to version 0:5.14.0-687.5.3.el9_8 or higher.
This issue was patched in ELSA-2026-19225.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-devel-matched package and not the kernel-devel-matched package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1