CVE-2026-31431
crypto: algif_aead - Revert to operating out-of-place
Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA notes
https://lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/; https://xint.io/blog/copy-fail-linux-distributions#the-fix-6 ; https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/about/ ; https://nvd.nist.gov/vuln/detail/CVE-2026-31431
Description
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.
Severity
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux | 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to <893d22e0135fa394db81df88697fba6032747667 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to <19d43105a97be0810edbda875f2cd03f30dc130c 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to <961cfa271a918ad4ae452420e7c303149002875b 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to <3115af9644c342b356f3f07a4dd1c8905cd9a6fc 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to <8b88d99341f139e23bdeb1027a2a3ae10d341d82 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to <fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to <ce42ee423e58dffa5ec03524054c9d8bfd4f6237 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 to <a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5 |
| Linux | Linux | 4.14 0 to <4.14 (unaffected) 5.10.254 to 5.10.* (unaffected) 5.15.204 to 5.15.* (unaffected) 6.1.170 to 6.1.* (unaffected) 6.6.137 to 6.6.* (unaffected) 6.12.85 to 6.12.* (unaffected) 6.18.22 to 6.18.* (unaffected) 6.19.12 to 6.19.* (unaffected) 7.0 to * (unaffected) |
References
79 Links- https://git.kernel.org/stable/c/893d22e0135fa394db81df88697fba6032747667
- https://git.kernel.org/stable/c/19d43105a97be0810edbda875f2cd03f30dc130c
- https://git.kernel.org/stable/c/961cfa271a918ad4ae452420e7c303149002875b
- https://git.kernel.org/stable/c/3115af9644c342b356f3f07a4dd1c8905cd9a6fc
- https://git.kernel.org/stable/c/8b88d99341f139e23bdeb1027a2a3ae10d341d82
- https://git.kernel.org/stable/c/fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8
- https://git.kernel.org/stable/c/ce42ee423e58dffa5ec03524054c9d8bfd4f6237
- https://git.kernel.org/stable/c/a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5
- http://www.openwall.com/lists/oss-security/2026/04/29/23
- https://copy.fail
- 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/2026/04/30/2
- 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/2026/04/30/10
- 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
- https://websec.net/blog/cve-2026-31431-linux-algifaead-page-cache-write-to-root-69f38a4ccddd2db1f520f170
- http://www.openwall.com/lists/oss-security/2026/04/30/20
- http://www.openwall.com/lists/oss-security/2026/05/01/2
- http://www.openwall.com/lists/oss-security/2026/05/01/3
- 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/2026/05/02/4
- 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/2026/05/02/14
- 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/2026/05/03/3
- http://www.openwall.com/lists/oss-security/2026/05/03/4
- http://www.openwall.com/lists/oss-security/2026/05/03/10
- 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/2026/05/03/12
- http://www.openwall.com/lists/oss-security/2026/05/03/13
- http://www.openwall.com/lists/oss-security/2026/05/04/1
- http://www.openwall.com/lists/oss-security/2026/05/04/2
- 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/2026/05/04/8
- http://www.openwall.com/lists/oss-security/2026/05/04/9
- 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/2026/05/06/5
- 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
- http://www.openwall.com/lists/oss-security/2026/05/18/3
Record Details
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