PT-2024-7332 · Linux · Linux Kernel

Published 2024-07-05 · Updated 2024-09-06 · CVE-2024-42257

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 6.10.0

Description: The issue is related to the ext4 file system in the Linux kernel, specifically with the function ext4 ioctl getlabel() in the fs/ext4/ioctl.c module. It involves improper memory access beyond the allocated buffer, potentially affecting the confidentiality, integrity, and availability of protected information. The problem is also described as an improper null termination in ext4.h memtostr pad().

Recommendations: For Linux kernel versions prior to 6.10.0, upgrade to version 6.10.0 or later to mitigate the risk. As a temporary workaround, consider restricting access to the vulnerable ext4 file system until a patch is available. Avoid using the s volume name string in the affected struct ext4 super block until the issue is resolved.

Exploit

Fix

Out of bounds Read

Memory Corruption

Weakness Enumeration

CWE-125

CWE-787

Related Identifiers

BDU:2024-08688

CVE-2024-42257

Affected Products

Linux Kernel

References · 18

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42257.json · Exploit
• https://git.kernel.org/stable/c/4378be89ddb7de88d984b67ecfd6191686c42817 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2024-42257 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-42257 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2024-42257 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-42257 · Security Note
• https://cve.org/CVERecord?id=CVE-2024-42257 · Security Note
• https://ubuntu.com/security/CVE-2024-42257 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-08688 · Security Note
• https://git.kernel.org/stable/c/be27cd64461c45a6088a91a04eba5cd44e1767ef · Patch
• https://osv.dev/vulnerability/CVE-2024-42257 · Vendor Advisory
• https://git.kernel.org/linus/be27cd64461c45a6088a91a04eba5cd44e1767ef · Note
• https://lore.kernel.org/linux-cve-announce/2024080839-CVE-2024-42257-8823@gregkh · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://twitter.com/oktsec/status/1824223110486184395 · Twitter Post