Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability

High CVSS 7.8 Listed in CISA KEV

CVECVE-2026-31431

First seen2026-05-01 00:00 UTC

Disclosed2026-04-22 09:16 UTC

Last updated2026-09-02 01:45 UTC

Channel statuspending_review

Summary

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

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

Linux:Kernel
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Sources

CISA KEV DATABASE
NVD DATABASE

Original Links

https://nvd.nist.gov/vuln/detail/CVE-2026-31431 advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog kev
https://lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/; reference
https://xint.io/blog/copy-fail-linux-distributions#the-fix-6 reference
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/about/ reference
https://git.kernel.org/stable/c/19d43105a97be0810edbda875f2cd03f30dc130c Patch
https://git.kernel.org/stable/c/3115af9644c342b356f3f07a4dd1c8905cd9a6fc Patch
https://git.kernel.org/stable/c/893d22e0135fa394db81df88697fba6032747667 Patch
https://git.kernel.org/stable/c/8b88d99341f139e23bdeb1027a2a3ae10d341d82 Patch
https://git.kernel.org/stable/c/961cfa271a918ad4ae452420e7c303149002875b Patch
https://git.kernel.org/stable/c/a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5 Patch
https://git.kernel.org/stable/c/ce42ee423e58dffa5ec03524054c9d8bfd4f6237 Patch
https://git.kernel.org/stable/c/fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8 Patch
http://www.openwall.com/lists/oss-security/2026/04/29/23 Exploit
http://www.openwall.com/lists/oss-security/2026/04/29/25 Mailing List
http://www.openwall.com/lists/oss-security/2026/04/29/26 Exploit
http://www.openwall.com/lists/oss-security/2026/04/30/10 Mailing List
http://www.openwall.com/lists/oss-security/2026/04/30/11 Mailing List
http://www.openwall.com/lists/oss-security/2026/04/30/12 Mailing List
http://www.openwall.com/lists/oss-security/2026/04/30/14 Mailing List
http://www.openwall.com/lists/oss-security/2026/04/30/15 Mailing List
http://www.openwall.com/lists/oss-security/2026/04/30/16 Mailing List
http://www.openwall.com/lists/oss-security/2026/04/30/17 Mailing List
http://www.openwall.com/lists/oss-security/2026/04/30/18 Exploit
http://www.openwall.com/lists/oss-security/2026/04/30/2 Mailing List
http://www.openwall.com/lists/oss-security/2026/04/30/20 Mailing List
http://www.openwall.com/lists/oss-security/2026/04/30/5 Exploit
http://www.openwall.com/lists/oss-security/2026/04/30/6 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/10 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/12 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/15 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/16 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/17 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/18 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/2 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/22 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/23 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/24 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/01/3 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/14 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/15 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/16 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/17 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/18 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/19 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/20 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/21 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/23 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/24 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/25 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/4 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/5 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/6 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/7 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/02/8 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/03/10 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/03/12 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/03/13 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/03/3 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/03/4 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/03/5 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/03/6 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/1 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/10 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/11 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/12 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/13 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/14 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/2 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/24 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/27 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/28 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/29 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/31 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/8 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/04/9 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/06/5 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/07/12 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/07/2 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/08/13 Mailing List
http://www.openwall.com/lists/oss-security/2026/05/18/3 Mailing List
https://copy.fail Exploit
https://websec.net/blog/cve-2026-31431-linux-algifaead-page-cache-write-to-root-69f38a4ccddd2db1f520f170 Exploit
https://www.kb.cert.org/vuls/id/260001 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13565 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13566 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13577 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13578 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13681 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13690 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13727 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13729 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13734 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13811 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13862 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13885 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13887 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13932 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:13936 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:14097 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:14112 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:14137 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:14165 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:14230 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:14301 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:14339 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:14773 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:14926 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:15087 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:15976 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:15978 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:16018 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:16063 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:16111 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:16208 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:16209 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:16210 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:19074 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:19225 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:33486 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-31431 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2460538 Issue Tracking
https://cert-portal.siemens.com/productcert/html/ssa-019113.html Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-082556.html Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-265688.html Third Party Advisory
https://github.com/theori-io/copy-fail-CVE-2026-31431 Exploit
https://lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/ Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31431.json Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-31431 US Government Resource

Timeline

2026-05-01 kev_added CISA KEV
2026-07-14 kev_ingest CISA KEV
2026-07-28 nvd_ingest NVD