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7.8HighExploited CVE-2026-31431 Linux

Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability

In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just

What happened

In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.

CISA lists it as exploited, added 01 May 2026.

NVD description

Does it affect you

Names Red Hat Enterprise Linux, Canonical Ubuntu. Enter the product and version you run to place it against the affected range the vendor published.

What to do

  • Apply the vendor patch named in this advisory.
    git.kernel.org
  • Apply the vendor patch named in this advisory.
    git.kernel.org
  • Apply the vendor patch named in this advisory.
    git.kernel.org
  • Apply the vendor patch named in this advisory.
    git.kernel.org
  • "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
    cisa.gov

CISA’s notes for this entry:

Affected, as published to NVD

rhel
Red Hat Enterprise Linux: exactly 8.0
ubuntu
Canonical Ubuntu: exactly 14.04

The record

Identifier
CVE-2026-31431 · NVD · CVE.org
NVD status
Analyzed
Published
22 Apr 2026, last modified 08 Sep 2026 (NVD)
Severity
CVSS 3.1 base score 7.8, High — computed here from the vector; NVD states 7.8.
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation
Listed in CISA’s Known Exploited Vulnerabilities catalogue since 01 May 2026; federal remediation due 15 May 2026. CISA entry
Exploit probability
EPSS 3.4%, 89th percentile — FIRST, scored 23 Oct 2026. FIRST EPSS
Vendor
Linux · Kernel (CISA)

Reporting that names this identifier

The verdict above is computed from the products and versions you entered and the affected ranges the vendor published to NVD. It does not inspect your environment, and this site never reports a product as unaffected: why.