Published: 29/08/2022 Updated: 02/02/2023

CVSS v3 Base Score: 8.8 | Impact Score: 6 | Exploitability Score: 2

VMScore: 0

A flaw was found in the Linux kernel’s io_uring implementation. This flaw allows an attacker with a local account to corrupt system memory, crash the system or escalate privileges.

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This Metasploit module exploits a bug in io_uring leading to an additional put_cred() that can be exploited to hijack credentials of other processes This exploit will spawn SUID programs to get the freed cred object reallocated by a privileged process and abuse them to create a SUID root binary that will pop a shell The dangling cred pointer will ...

CWE-416 https://github.com/torvalds/linux/commit/a30f895ad3239f45012e860d4f94c1a388b36d14 https://bugzilla.redhat.com/show_bug.cgi?id=1997328 https://www.zerodayinitiative.com/advisories/ZDI-22-362/https://access.redhat.com/security/cve/CVE-2022-1043 http://packetstormsecurity.com/files/170834/io_uring-Same-Type-Object-Reuse-Privilege-Escalation.html https://nvd.nist.gov https://packetstormsecurity.com/files/170834/io_uring-Same-Type-Object-Reuse-Privilege-Escalation.html

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CVE-2022-1043

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