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7.8
CVSSv3

CVE-2023-3389

Published: 28/06/2023 Updated: 26/10/2023
CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8
VMScore: 0
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Vulnerability Summary

A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).

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linux linux kernel

canonical ubuntu linux 18.04

canonical ubuntu linux 14.04

canonical ubuntu linux 20.04

canonical ubuntu linux 16.04

canonical ubuntu linux 22.04

debian debian linux 10.0

debian debian linux 11.0

Vendor Advisories

Debian Security Advisories: DSA-5480-1 linux -- security update
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks CVE-2022-4269 William Zhao discovered that a flaw in the Traffic Control (TC) subsystem when using a specific networking configuration (redirecting egress packets to ingress using TC action m ...
Red Hat:
Description<!---->A use-after-free flaw was found in the Linux kernel&amp;rsquo;s io_uring functionality This flaw allows a local user to crash the systemA use-after-free flaw was found in the Linux kernel’s io_uring functionality This flaw allows a local user to crash the system ...

References

CWE-416https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y&id=0e388fce7aec40992eadee654193cad345d62663https://kernel.dance/4716c73b188566865bdd79c3a6709696a224ac04https://kernel.dance/0e388fce7aec40992eadee654193cad345d62663https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=4716c73b188566865bdd79c3a6709696a224ac04https://kernel.dance/ef7dfac51d8ed961b742218f526bd589f3900a59https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ef7dfac51d8ed961b742218f526bd589f3900a59https://security.netapp.com/advisory/ntap-20230731-0001/https://www.debian.org/security/2023/dsa-5480http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.htmlhttps://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlhttps://nvd.nist.govhttps://www.debian.org/security/2023/dsa-5480
CVSSv3
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CVSSv3
VMScore
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