Vulnerability in Amazon Linux
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.034 (88.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000
Affected products
- Amazon Linux
- Arista Cloudvision Agni
- Arista Cloudvision Portal
- Arista Netvisor OS — versions 7.1.0
- Arista Velocloud Edge
- Arista Velocloud Gateway
- Arista Velocloud Orchestrator
- Linux — versions 72548b093ee38a6d4f2a19e6ef1948ae05c181f7, 4.14, 0
- Linux Kernel — versions 7.0
- Nixos
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
Public proof-of-concept exploits
- theori-io/copy-fail-CVE-2026-31431
- tgies/copy-fail-c
- badsectorlabs/copyfail-go
- Percivalll/Copy-Fail-CVE-2026-31431-Kubernetes-PoC
- Sndav/CVE-2026-31431-Advanced-Exploit
- painoob/Copy-Fail-Exploit-CVE-2026-31431
- sgkdev/page_inject
- adysec/cve-2026-31431
- Crihexe/copy-fail-tiny-elf-CVE-2026-31431
- shadowabi/CVE-2026-31431-CopyFail-Universal-LPE
References
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- af854a3a-2127-422b-91ae-364da2661108 (Exploit, Mailing List, Patch)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Patch)
Frequently asked questions
- What is CVE-2026-31431?
- CVE-2026-31431 is a high-severity vulnerability in Amazon Linux, classified under Incorrect Resource Transfer Between Spheres. CVSS score: 7.8/10. Published 2026-04-22.
- How severe is CVE-2026-31431?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2026-31431 known to be exploited?
- Yes. CVE-2026-31431 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-05-01), indicating it is being actively exploited. 370 public proof-of-concept repositories are indexed.