Improper Validation of Consistency within Input The advisory has been revoked - it doesn't affect any version of package kernel-rt-core (opens in a new tab)
Threat Intelligence
Social Trends
This vulnerability is trending on Twitter; this may indicate a growing threat.
Exploit Maturity
Snyk has reported that there have been attempts or successful attacks targeting this vulnerability.
Attacked
EPSS
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
99.91% (100th percentile)
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Test your applications- Snyk IDSNYK-RHEL10-KERNELRTCORE-16171978
- published24 Apr 2026
- disclosed22 Apr 2026
Introduced: 22 Apr 2026
CVE-2026-31431 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-core package and not the kernel-rt-core package as distributed by RHEL.
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.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2460538
- https://access.redhat.com/articles/7141989
- https://access.redhat.com/security/vulnerabilities/RHSB-2026-002
- https://access.redhat.com/security/vulnerabilities/RHSB-2026-02
- https://access.redhat.com/solutions/7141931
- https://access.redhat.com/solutions/7141979
- https://access.redhat.com/solutions/7141990
- https://access.redhat.com/solutions/7141996
- https://access.redhat.com/solutions/7142032
- https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/managing_monitoring_and_updating_the_kernel/configuring-kernel-command-line-parameters_managing-monitoring-and-updating-the-kernel
- https://access.redhat.com/security/cve/CVE-2026-31431
- https://access.redhat.com/errata/RHSA-2026:13566
- https://access.redhat.com/errata/RHSA-2026:13887
- https://access.redhat.com/errata/RHSA-2026:14926
- https://access.redhat.com/errata/RHSA-2026:19074
- 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
- 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/2026/05/01/2
- http://www.openwall.com/lists/oss-security/2026/05/01/3
- https://copy.fail
- https://websec.net/blog/cve-2026-31431-linux-algifaead-page-cache-write-to-root-69f38a4ccddd2db1f520f170
- https://github.com/theori-io/copy-fail-CVE-2026-31431
- 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/2026/05/01/22
- 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/2026/05/02/14
- 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/2026/05/04/2
- https://access.redhat.com/security/cve/cve-2026-31431#cve-details-mitigation
- https://lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-31431
- https://xint.io/blog/copy-fail-linux-distributions#the-fix-6
- 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/2026/05/04/24
- 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/2026/05/07/2
- http://www.openwall.com/lists/oss-security/2026/05/07/12
- http://www.openwall.com/lists/oss-security/2026/05/08/13
- https://www.kb.cert.org/vuls/id/260001
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- http://www.openwall.com/lists/oss-security/2026/05/18/3
- https://access.redhat.com/errata/RHSA-2026:13565
- 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-2026:13932
- 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-2026:15087
- 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-2026:19225
- https://access.redhat.com/errata/RHSA-2026:33486
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31431.json
- https://github.com/JuanBindez/CVE-2026-31431
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- https://www.exploit-db.com/exploits/52573
- https://github.com/projectdiscovery/nuclei-templates/blob/main/code/cves/2026/CVE-2026-31431.yaml