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Findings

CVE-2026-31431

Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability

Published Apr 22, 2026 · updated Sep 8, 2026 · Linux Kernel

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.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 22, 2026 · Catalog

    Detected

    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

  2. May 1, 2026 · CISA KEV

    Known exploited

    "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  3. May 15, 2026 · CISA KEV

    Remediation due

    "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  4. Sep 8, 2026 · Catalog

    Updated

    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

Required action

"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 due date May 15, 2026

Affected

  • cpe amazon/amazon linuxversion unspecified
  • cpe linux/linux kernelversion unspecified
  • cpe linux/linux kernel7.0
  • cpe opensuse/leap15.3
  • cpe redhat/openshift container platformversion unspecified
  • cpe suse/caas platform4.0
  • vendor Linux Kernelversion unspecified

Sources

  • CISA KEVCVE-2026-31431

    Linux Kernel contains an incorrect resource transfer between spheres vulnerability that could allow for privilege escalation.

    cisa.gov
  • CVE.orgCVE-2026-31431

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2026-31431

    30-day exploitation probability 3.4%

    first.org
  • Metasploit Modulesexploit_linux/local/cve_2026_31431_copy_fail

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDCVE-2026-31431

    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 so

    nvd.nist.gov

References