CVE-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
source and destination come from different mappings. Get rid of
all the complexity added for in-place operation and just copy the
AD directly.
Package Versions Affected
Automatically patch vulnerabilities without upgrading
CVSS Version



Related Resources
References
http://www.openwall.com/lists/oss-security/2026/04/29/23, http://www.openwall.com/lists/oss-security/2026/04/29/25, http://www.openwall.com/lists/oss-security/2026/04/29/26, http://www.openwall.com/lists/oss-security/2026/04/30/10, http://www.openwall.com/lists/oss-security/2026/04/30/11, http://www.openwall.com/lists/oss-security/2026/04/30/12, http://www.openwall.com/lists/oss-security/2026/04/30/14, http://www.openwall.com/lists/oss-security/2026/04/30/15, http://www.openwall.com/lists/oss-security/2026/04/30/16, http://www.openwall.com/lists/oss-security/2026/04/30/17, http://www.openwall.com/lists/oss-security/2026/04/30/18, http://www.openwall.com/lists/oss-security/2026/04/30/2, http://www.openwall.com/lists/oss-security/2026/04/30/20, http://www.openwall.com/lists/oss-security/2026/04/30/5, http://www.openwall.com/lists/oss-security/2026/04/30/6, http://www.openwall.com/lists/oss-security/2026/05/01/10, http://www.openwall.com/lists/oss-security/2026/05/01/12, http://www.openwall.com/lists/oss-security/2026/05/01/15, http://www.openwall.com/lists/oss-security/2026/05/01/16, http://www.openwall.com/lists/oss-security/2026/05/01/17, http://www.openwall.com/lists/oss-security/2026/05/01/18, http://www.openwall.com/lists/oss-security/2026/05/01/2, http://www.openwall.com/lists/oss-security/2026/05/01/22, http://www.openwall.com/lists/oss-security/2026/05/01/23, http://www.openwall.com/lists/oss-security/2026/05/01/24, http://www.openwall.com/lists/oss-security/2026/05/01/3, http://www.openwall.com/lists/oss-security/2026/05/02/14, http://www.openwall.com/lists/oss-security/2026/05/02/15, http://www.openwall.com/lists/oss-security/2026/05/02/16, http://www.openwall.com/lists/oss-security/2026/05/02/17, http://www.openwall.com/lists/oss-security/2026/05/02/18, http://www.openwall.com/lists/oss-security/2026/05/02/19, http://www.openwall.com/lists/oss-security/2026/05/02/20, http://www.openwall.com/lists/oss-security/2026/05/02/21, http://www.openwall.com/lists/oss-security/2026/05/02/23, http://www.openwall.com/lists/oss-security/2026/05/02/24, http://www.openwall.com/lists/oss-security/2026/05/02/25, http://www.openwall.com/lists/oss-security/2026/05/02/4, http://www.openwall.com/lists/oss-security/2026/05/02/5, http://www.openwall.com/lists/oss-security/2026/05/02/6, http://www.openwall.com/lists/oss-security/2026/05/02/7, http://www.openwall.com/lists/oss-security/2026/05/02/8, http://www.openwall.com/lists/oss-security/2026/05/03/10, http://www.openwall.com/lists/oss-security/2026/05/03/12, http://www.openwall.com/lists/oss-security/2026/05/03/13, http://www.openwall.com/lists/oss-security/2026/05/03/3, http://www.openwall.com/lists/oss-security/2026/05/03/4, http://www.openwall.com/lists/oss-security/2026/05/03/5, http://www.openwall.com/lists/oss-security/2026/05/03/6, http://www.openwall.com/lists/oss-security/2026/05/04/1, http://www.openwall.com/lists/oss-security/2026/05/04/10, http://www.openwall.com/lists/oss-security/2026/05/04/11, http://www.openwall.com/lists/oss-security/2026/05/04/12, http://www.openwall.com/lists/oss-security/2026/05/04/13, http://www.openwall.com/lists/oss-security/2026/05/04/14, http://www.openwall.com/lists/oss-security/2026/05/04/2, http://www.openwall.com/lists/oss-security/2026/05/04/24, http://www.openwall.com/lists/oss-security/2026/05/04/27, http://www.openwall.com/lists/oss-security/2026/05/04/28, http://www.openwall.com/lists/oss-security/2026/05/04/29, http://www.openwall.com/lists/oss-security/2026/05/04/31, http://www.openwall.com/lists/oss-security/2026/05/04/8, http://www.openwall.com/lists/oss-security/2026/05/04/9, http://www.openwall.com/lists/oss-security/2026/05/06/5, http://www.openwall.com/lists/oss-security/2026/05/07/12, http://www.openwall.com/lists/oss-security/2026/05/07/2, http://www.openwall.com/lists/oss-security/2026/05/08/13, http://www.openwall.com/lists/oss-security/2026/05/18/3, https://access.redhat.com/security/cve/cve-2026-31431#cve-details-mitigation, https://cert-portal.siemens.com/productcert/html/ssa-019113.html, https://cert-portal.siemens.com/productcert/html/ssa-082556.html, https://cert-portal.siemens.com/productcert/html/ssa-265688.html, https://copy.fail, https://git.kernel.org/stable/c/19d43105a97be0810edbda875f2cd03f30dc130c, https://git.kernel.org/stable/c/3115af9644c342b356f3f07a4dd1c8905cd9a6fc, https://git.kernel.org/stable/c/893d22e0135fa394db81df88697fba6032747667, https://git.kernel.org/stable/c/8b88d99341f139e23bdeb1027a2a3ae10d341d82, https://git.kernel.org/stable/c/961cfa271a918ad4ae452420e7c303149002875b, https://git.kernel.org/stable/c/a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5, https://git.kernel.org/stable/c/ce42ee423e58dffa5ec03524054c9d8bfd4f6237, https://git.kernel.org/stable/c/fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8, https://lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/, https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31431.json, https://www.cisa.gov/known-exploited-vulnerabilities-catalog?fieldcve=CVE-2026-31431, https://www.kb.cert.org/vuls/id/260001, https://access.redhat.com/errata/RHSA-2026:13565, https://access.redhat.com/errata/RHSA-2026:13566, https://access.redhat.com/errata/RHSA-2026:13577, https://access.redhat.com/errata/RHSA-2026:13578, https://access.redhat.com/errata/RHSA-2026:13681, https://access.redhat.com/errata/RHSA-2026:13690, https://access.redhat.com/errata/RHSA-2026:13727, https://access.redhat.com/errata/RHSA-2026:13729, https://access.redhat.com/errata/RHSA-2026:13734, https://access.redhat.com/errata/RHSA-2026:13811, https://access.redhat.com/errata/RHSA-2026:13862, https://access.redhat.com/errata/RHSA-2026:13885, https://access.redhat.com/errata/RHSA-2026:13887, https://access.redhat.com/errata/RHSA-2026:13932, https://access.redhat.com/errata/RHSA-2026:13936, https://access.redhat.com/errata/RHSA-2026:14097, https://access.redhat.com/errata/RHSA-2026:14112, https://access.redhat.com/errata/RHSA-2026:14137, https://access.redhat.com/errata/RHSA-2026:14165, https://access.redhat.com/errata/RHSA-2026:14230, https://access.redhat.com/errata/RHSA-2026:14301, https://access.redhat.com/errata/RHSA-2026:14339, https://access.redhat.com/errata/RHSA-2026:14773, https://access.redhat.com/errata/RHSA-2026:14926, https://access.redhat.com/errata/RHSA-2026:15087, https://access.redhat.com/errata/RHSA-2026:15976, https://access.redhat.com/errata/RHSA-2026:15978, https://access.redhat.com/errata/RHSA-2026:16018, https://access.redhat.com/errata/RHSA-2026:16063, https://access.redhat.com/errata/RHSA-2026:16111, https://access.redhat.com/errata/RHSA-2026:16208, https://access.redhat.com/errata/RHSA-2026:16209, https://access.redhat.com/errata/RHSA-2026:16210, https://access.redhat.com/errata/RHSA-2026:19074, https://access.redhat.com/errata/RHSA-2026:19225, https://access.redhat.com/errata/RHSA-2026:33486, https://access.redhat.com/security/cve/CVE-2026-31431, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31431.json, https://nvd.nist.gov/vuln/detail/CVE-2026-31431, https://bugzilla.redhat.com/showbug.cgi?id=2460538, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git, https://websec.net/blog/cve-2026-31431-linux-algifaead-page-cache-write-to-root-69f38a4ccddd2db1f520f170, https://xint.io/blog/copy-fail-linux-distributions#the-fix-6, https://github.com/theori-io/copy-fail-CVE-2026-31431