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CVE

CVE-2026-31431

crypto: algif_aead - Revert to operating out-of-place
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CVE

CVE-2026-31431

crypto: algif_aead - Revert to operating out-of-place

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

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.8
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

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

Severity

7.8

CVSS Score
0
10

Basic Information

Base CVSS
7.8
EPSS Probability
0.96267%
EPSS Percentile
0.99871%
Introduced Version
72548b093ee38a6d4f2a19e6ef1948ae05c181f7,4.14.0,5.11.0,5.16.0,6.2.0,6.7.0,6.13.0,6.19.0,0
Fix Available
a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5,5.10.254,5.15.204,6.1.170,6.6.137,6.12.85,6.18.22,6.19.12,0:4.18.0-553.123.1.el8_10,0:1-10.el8_10,0:1-8.el8_10,0:1-5.el8_10,0:1-3.el8_10,0:1-1.el8_10,0:4.18.0-553.123.1.rt7.464.el8_10,0:1-4.el9_7,0:1-1.el9_7,0:5.14.0-611.54.1.el9_7,0:5.14.0-687.5.3.el9_8,6.1.170-1,5.10.251-3,6.1.170-1~deb11u1,6.12.85-1,0:6.8.0-117.117,0:6.17.0-29.29~24.04.1,0:6.8.0-1055.58,0:6.17.0-1017.17~24.04.1,0:6.8.0-1056.62,0:6.17.0-1015.15~24.04.1,0:6.8.0-1058.61,0:6.17.0-1018.19~24.04.1,0:6.8.0-1054.60,0:6.8.0-1041.44,0:6.8.0-1055.56,0:6.8.0-117.117.1,0:6.8.0-1054.57,0:6.8.0-1054.57.1,0:6.8.0-1025.25,0:6.8.0-1054.55,0:6.17.0-1014.14~24.04.1,0:6.17.0-1023.23,0:6.8.0-1056.60,0:6.8.0-1032.33,0:6.17.0-1018.18,0:4.15.0-250.262,0:5.4.0-231.251~18.04.1,0:4.15.0-1174.179,0:4.15.0-1192.205,0:5.4.0-1160.170~18.04.1,0:4.15.0-1201.216,0:5.4.0-1163.169~18.04.1,0:4.15.0-1185.202,0:5.4.0-1162.171~18.04.1,0:5.4.0-1105.110~18.04.1,0:4.15.0-1154.165,0:5.4.0-1157.167~18.04.1,0:5.4.0-1143.156~18.04.1,0:5.4.0-230.250,0:5.15.0-179.189~20.04.1,0:5.4.0-1146.155,0:5.4.0-1159.169,0:5.15.0-1108.115~20.04.1,0:5.4.0-1163.169,0:5.15.0-1114.123~20.04.1,0:5.4.0-1118.125,0:5.4.0-1162.171,0:5.15.0-1108.117~20.04.1,0:5.4.0-1105.110,0:5.15.0-1102.105~20.04.1,0:5.15.0-1103.109~20.04.1,0:5.4.0-1063.66,0:5.15.0-1060.60~20.04.1,0:5.4.0-1157.167,0:5.15.0-1106.112~20.04.1,0:5.4.0-1143.156,0:5.4.0-1077.81,0:5.15.0-179.189,0:6.8.0-124.124~22.04.1,0:5.15.0-1100.105,0:5.15.0-1108.115,0:6.8.0-1057.60~22.04.1,0:5.15.0-1114.123,0:6.8.0-1059.65~22.04.1,0:5.15.0-1108.117,0:6.8.0-1060.63~22.04.1,0:5.15.0-1104.110,0:5.15.0-1091.99,0:5.15.0-1102.105,0:6.8.0-1055.56~22.04.1,0:5.15.0-1103.109,0:6.8.0-117.117.1~22.04.1,0:5.15.0-1103.104,0:6.8.0-1054.57~22.04.1,0:5.15.0-1060.60,0:5.15.0-1049.49,0:5.15.0-1105.111,0:6.8.0-1054.55~22.04.1,0:5.15.0-1074.78,29.4.2-r0,29.4.3-r0,0:6.12.0-204.92.4.2.el9uek,0:6.12.0-203.76.7.1.el9uek,0:5.15.0-318.199.3.6.el9uek,0:6.12.0-202.76.4.1.el9uek,0:5.15.0-320.202.8.2.el9uek,0:6.12.0-201.74.2.2.el9uek,0:5.15.0-319.201.4.4.el9uek,0:5.15.0-318.199.3.6.el8uek,0:5.4.17-2136.355.3.1.el8uek,0:5.15.0-320.202.8.2.el8uek,0:5.4.17-2136.354.4.2.el8uek,0:5.15.0-319.201.4.4.el8uek,0:5.4.17-2136.355.3.1.el7uek,0:5.4.17-2136.354.4.2.el7uek,1:6.18.20-41.237.amzn2023,1:1.0-0.amzn2023,1:6.12.80-106.156.amzn2023,1:6.1.168-203.330.amzn2023,1:1.0-1.amzn2023,0:4.14.355-281.727.amzn2,0:1.0-0.amzn2,0:1.0-1.amzn2,0:5.4.302-223.469.amzn2,0:5.10.252-250.1016.amzn2,0:5.15.202-142.235.amzn2,6.12.83-r2,6.12.85-r0

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