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CVE-2023-2513

Status Candidate

Overview

A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the extra inode size for extended attributes. This flaw could allow a privileged local user to cause a system crash or other undefined behaviors.

Related Files

Ubuntu Security Notice USN-6254-1
Posted Jul 27, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6254-1 - Jordy Zomer and Alexandra Sandulescu discovered that syscalls invoking the do_prlimit function in the Linux kernel did not properly handle speculative execution barriers. A local attacker could use this to expose sensitive information. It was discovered that a race condition existed in the btrfs file system implementation 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 expose sensitive information.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-0458, CVE-2023-1611, CVE-2023-2124, CVE-2023-2162, CVE-2023-2513, CVE-2023-3090, CVE-2023-3141, CVE-2023-3159, CVE-2023-3161, CVE-2023-3268, CVE-2023-3390, CVE-2023-35001
SHA-256 | 0faaa1a4c904d2777eb8f39748a9d767eddb9f41659d19079b8dcbea4f5d81ef
Gentoo Linux Security Advisory 202307-01
Posted Jul 20, 2023
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202307-1 - Multiple vulnerabilities have been discovered in OpenSSH, the worst of which could result in remote code execution. Versions less than 9.3_p2 are affected.

tags | advisory, remote, vulnerability, code execution
systems | linux, gentoo
advisories | CVE-2023-25136, CVE-2023-28531, CVE-2023-38408
SHA-256 | e6bacec3063ea2cc3f27ebc72032e82e64d71502347e717441dac3017857897d
Red Hat Security Advisory 2023-2645-01
Posted May 9, 2023
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2023-2645-01 - OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Issues addressed include a double free vulnerability.

tags | advisory, protocol
systems | linux, redhat, unix
advisories | CVE-2023-25136
SHA-256 | 75cca0bd00355e7558ba6ccca94e0a0299ad07a2ad33a83933e16a688354f0a8
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