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CVE-2023-3269

Status Candidate

Overview

A vulnerability exists in the memory management subsystem of the Linux kernel. The lock handling for accessing and updating virtual memory areas (VMAs) is incorrect, leading to use-after-free problems. This issue can be successfully exploited to execute arbitrary kernel code, escalate containers, and gain root privileges.

Related Files

Ubuntu Security Notice USN-6250-1
Posted Jul 26, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6250-1 - Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission checks in certain situations. A local attacker could possibly use this to gain elevated privileges. It was discovered that the IP-VLAN network driver for the Linux kernel did not properly initialize memory in some situations, leading to an out-of- bounds write vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-2640, CVE-2023-3090, CVE-2023-31248, CVE-2023-32629, CVE-2023-3269, CVE-2023-3389, CVE-2023-3390, CVE-2023-35001
SHA-256 | a3c2bee7fb44adf555ec4f0c4513eec063216c00e3541ec88c1729871be7fb50
Ubuntu Security Notice USN-6249-1
Posted Jul 26, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6249-1 - Ruihan Li discovered that the memory management subsystem in the Linux kernel contained a race condition when accessing VMAs in certain conditions, leading to a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service or execute arbitrary code. Querijn Voet discovered that a race condition existed in the io_uring subsystem in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-3269, CVE-2023-3389
SHA-256 | fa00f685b65a90c9484ef2ebfc948200123e1ec2275cb03b1d48584874eb8d27
Debian Security Advisory 5448-1
Posted Jul 6, 2023
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5448-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2023-2124, CVE-2023-2156, CVE-2023-2269, CVE-2023-3090, CVE-2023-31084, CVE-2023-3212, CVE-2023-32250, CVE-2023-32254, CVE-2023-3268, CVE-2023-3269, CVE-2023-3390, CVE-2023-35788
SHA-256 | 69b555bc6896ae45b61015f0f97296207dfc3d9bdcac414ad415646ffe0f0645
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