01 Record

CVE-2026-31431

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

HighKEVPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

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

03 Exploitation and scoring

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-05-01. Federal remediation due 2026-05-15.

SSVC decision

ExploitationactiveCISA reports credible evidence of active exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

99.91% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 100.0% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-07-28.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-04-22 08:15Z4 MO AGO

Last updated

2026-09-01 12:04Z3 DAYS AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-669Incorrect Resource Transfer Between SpheresClass

Data version

5.2

Document digest

f1a563add3f380c20e3ca9b059651d2a182068c38cfbc78ca348d783fb426c65

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to < 893d22e0135fa394db81df88697fba6032747667, 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to < 19d43105a97be0810edbda875f2cd03f30dc130c, 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to < 961cfa271a918ad4ae452420e7c303149002875b, 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to < 3115af9644c342b356f3f07a4dd1c8905cd9a6fc, 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to < 8b88d99341f139e23bdeb1027a2a3ae10d341d82, 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to < fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8, 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to < ce42ee423e58dffa5ec03524054c9d8bfd4f6237, 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to < a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5, 4.14—

06 References

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

01 Record index

CVE-2026-31431

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-31431

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References