May 1, 2026 · Applied Cybernetics Group
CVE-2026-31431 — Linux Kernel
Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability
- Added to KEV
2026-05-01- Federal due date
2026-05-15- Vendor
- Linux
- Product
- Kernel
- EPSS
- 84.7th percentile (score 0.022, as of
2026-06-08) - NVD CVSS v3.1
- 7.8 (HIGH)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2026-31431
CISA short 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.
NVD 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.