CVE-2024-0775: linux kernel Use-After-Free — Fix

Description

A use-after-free flaw was found in the __ext4_remount in fs/ext4/super.c in ext4 in the Linux kernel. This flaw allows a local user to cause an information leak problem while freeing the old quota file names before a potential failure, leading to a use-after-free.

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CVSS v3.1 Score

6.7

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 6.4
linux	linux_kernel	All
redhat	enterprise_linux	All

References

Advisories & Patches

https://scm.linefinity.com/common/linux-stable/commit/4c0b4818b1f636bc96359f7817a2d8bab6370162 https://scm.linefinity.com/common/linux-stable/commit/4c0b4818b1f636bc96359f7817a2d8bab6370162

Other References

https://access.redhat.com/security/cve/CVE-2024-0775 https://bugzilla.redhat.com/show_bug.cgi?id=2259414 https://access.redhat.com/security/cve/CVE-2024-0775 https://bugzilla.redhat.com/show_bug.cgi?id=2259414

Frequently Asked Questions

What is CVE-2024-0775? +

A use-after-free flaw was found in the __ext4_remount in fs/ext4/super.c in ext4 in the Linux kernel. This flaw allows a local user to cause an information leak problem while freeing the old quota file names before a potential failure, leading to a use-after-free. It has a CVSS v3.1 base score of 6.7 (MEDIUM).

How severe is CVE-2024-0775? +

CVE-2024-0775 has a CVSS v3.1 score of 6.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-0775? +

CVE-2024-0775 affects products from linux, redhat, specifically: enterprise_linux, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-0775? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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