[CVE-2026-31431] Copy Fail: Universal Linux Local Privilege Escalation Vulnerability
wiz.io | vulnerability | CVE-2026-31431 | #privilege-escalation | #linux-kernel | #vulnerability | #cve-2026-31431 | #container-escape | #copy-fail
Summary
Copy Fail (CVE-2026-31431): an algif_aead flaw lets unprivileged users write 4 bytes into the page cache of any readable file via AF_ALG and splice(), escalating to root on kernels since 2017.
- CVE
- CVE-2026-31431
- Published
- Collected
--- id: 6850 title: "[CVE-2026-31431] Copy Fail: Universal Linux Local Privilege Escalation Vulnerability" cve: CVE-2026-31431 source_domain: wiz.io source_url: "https://www.wiz.io/blog/copyfail-cve-2026-31431-linux-privilege-escalation-vulnerability" published_at: "2026-05-01T12:38:09Z" tags: ["privilege-escalation", "linux-kernel", "vulnerability", "cve-2026-31431", "container-escape", "copy-fail"] phying_url: "https://phying.com/item/6850" lang: en --- # [CVE-2026-31431] Copy Fail: Universal Linux Local Privilege Escalation Vulnerability ## Summary Copy Fail (CVE-2026-31431): an algif_aead flaw lets unprivileged users write 4 bytes into the page cache of any readable file via AF_ALG and splice(), escalating to root on kernels since 2017. ## Intelligence Metadata - **Sources:** wiz.io - **CVE:** CVE-2026-31431 - **Published:** 2026-05-01T12:38:09Z - **Original:** https://www.wiz.io/blog/copyfail-cve-2026-31431-linux-privilege-escalation-vulnerability - **Phying News:** https://phying.com/item/6850