CVE-2026-31431
Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability
CVSS
7.8
High
EPSS
96.3%
p100
KEV
YES
May 1, 2026
Exploit Today
80
0-100
Published: Apr 22, 2026 · Last modified: Jul 15, 2026 · CWE-669 · CWE-1288
Product
Linux / Kernel
Vulnerability
Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability
Added to KEV
May 1, 2026
Remediate by
May 15, 2026
Known ransomware use
No
Summary description
Linux Kernel contains an incorrect resource transfer between spheres vulnerability that could allow for privilege escalation.
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.
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
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.
- git.kernel.orghttps://git.kernel.org/stable/c/19d43105a97be0810edbda875f2cd03f30dc130c
- git.kernel.orghttps://git.kernel.org/stable/c/3115af9644c342b356f3f07a4dd1c8905cd9a6fc
- git.kernel.orghttps://git.kernel.org/stable/c/893d22e0135fa394db81df88697fba6032747667
- git.kernel.orghttps://git.kernel.org/stable/c/8b88d99341f139e23bdeb1027a2a3ae10d341d82
- git.kernel.orghttps://git.kernel.org/stable/c/961cfa271a918ad4ae452420e7c303149002875b
- git.kernel.orghttps://git.kernel.org/stable/c/a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5
- git.kernel.orghttps://git.kernel.org/stable/c/ce42ee423e58dffa5ec03524054c9d8bfd4f6237
- git.kernel.orghttps://git.kernel.org/stable/c/fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/04/29/23
- 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/2026/04/30/10
- 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
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/04/30/2