CVE-2024-50283: linux kernel Use-After-Free — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-use-after-free in smb3_preauth_hash_rsp ksmbd_user_session_put should be called under smb3_preauth_hash_rsp(). It will avoid freeing session before calling smb3_preauth_hash_rsp().

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/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	< 6.1.117
linux	linux_kernel	6.2 — 6.6.61
linux	linux_kernel	6.7 — 6.11.8
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/1b6ad475d4ed577d34e0157eb507be00c588bf5c https://git.kernel.org/stable/c/b8fc56fbca7482c1e5c0e3351c6ae78982e25ada https://git.kernel.org/stable/c/c6cdc08c25a868a08068dfc319fa9fce982b8e7f https://git.kernel.org/stable/c/f7557bbca40d4ca8bb1c6c940ac6c95078bd0827

Other References

https://git.kernel.org/stable/c/cb645064e0811053c94e86677f2e58ed29359d62 https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-50283? +

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-use-after-free in smb3_preauth_hash_rsp ksmbd_user_session_put should be called under smb3_preauth_hash_rsp(). It will avoid freeing session before calling smb3_preauth_hash_rsp(). It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-50283? +

CVE-2024-50283 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-50283? +

CVE-2024-50283 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-50283? +

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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