CVE-2024-0646: linux kernel Memory Corruption — Fix

Description

An out-of-bounds memory write flaw was found in the Linux kernel’s Transport Layer Security functionality in how a user calls a function splice with a ktls socket as the destination. This flaw allows a local user to crash or potentially escalate their privileges on the system.

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CVSS v3.1 Score

7.0

HIGH

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

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
linux	linux_kernel	4.20 — 5.4.267
linux	linux_kernel	5.5 — 5.10.208
linux	linux_kernel	5.11 — 5.15.147
linux	linux_kernel	5.16 — 6.1.69
linux	linux_kernel	6.2 — 6.6.7
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
redhat	enterprise_linux	All
redhat	enterprise_linux	All

References

Advisories & Patches

https://bugzilla.redhat.com/show_bug.cgi?id=2253908 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5a595000e267 https://bugzilla.redhat.com/show_bug.cgi?id=2253908 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5a595000e267

Other References

https://access.redhat.com/errata/RHSA-2024:0723 https://access.redhat.com/errata/RHSA-2024:0724 https://access.redhat.com/errata/RHSA-2024:0725 https://access.redhat.com/errata/RHSA-2024:0850 https://access.redhat.com/errata/RHSA-2024:0851 https://access.redhat.com/errata/RHSA-2024:0876 https://access.redhat.com/errata/RHSA-2024:0881 https://access.redhat.com/errata/RHSA-2024:0897 https://access.redhat.com/errata/RHSA-2024:1248 https://access.redhat.com/errata/RHSA-2024:1250

Frequently Asked Questions

What is CVE-2024-0646? +

An out-of-bounds memory write flaw was found in the Linux kernel’s Transport Layer Security functionality in how a user calls a function splice with a ktls socket as the destination. This flaw allows a local user to crash or potentially escalate their privileges on the system. It has a CVSS v3.1 base score of 7.0 (HIGH).

How severe is CVE-2024-0646? +

CVE-2024-0646 has a CVSS v3.1 score of 7.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-0646? +

CVE-2024-0646 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-2024-0646? +

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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