What’s Vulnerable › Vulnerabilities

CVE-2022-29582

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-04-22 · updated 2026-08-13
• Weakness: CWE-362

Description

In the Linux kernel before 5.17.3, fs/io_uring.c has a use-after-free due to a race condition in io_uring timeouts. This can be triggered by a local user who has no access to any user namespace; however, the race condition perhaps can only be exploited infrequently.

Affected products

• Debian Linux: 11.0
• Linux kernel: before 5.10.111; from 5.11 before 5.15.34; from 5.16 before 5.16.20; from 5.17 before 5.17.3 — fixed in 5.10.111, 5.15.34, 5.16.20, 5.17.3

How to fix

Upgrade to a fixed version: Linux kernel 5.10.111, 5.15.34, 5.16.20, 5.17.3. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2022/04/22/4
• http://www.openwall.com/lists/oss-security/2022/08/08/3
• http://www.openwall.com/lists/oss-security/2024/04/24/3
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.3
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e677edbcabee849bfdd43f1602bccbecf736a646
• https://github.com/Ruia-ruia/CVE-2022-29582-Exploit
• https://github.com/torvalds/linux/commit/e677edbcabee849bfdd43f1602bccbecf736a646
• https://ruia-ruia.github.io/2022/08/05/CVE-2022-29582-io-uring/
• https://www.debian.org/security/2022/dsa-5127
• https://www.openwall.com/lists/oss-security/2022/04/22/3
• http://www.openwall.com/lists/oss-security/2022/04/22/4
• http://www.openwall.com/lists/oss-security/2022/08/08/3

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