PT-2024-7606 · Linux+8 · Linux Kernel+8
Published
2024-09-26
·
Updated
2026-05-26
·
CVE-2024-50047
CVSS v3.1
7.8
High
| 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 6.6.58
Description
The issue is related to a use-after-free vulnerability in the async decryption function of the Linux kernel's SMB client. This vulnerability can be exploited to impact the confidentiality, integrity, and availability of protected information. The vulnerability occurs when the
decrypt raw data() function is used in parallel, causing a slab-use-after-free error. The error is triggered by an async decryption operation, such as a large read, which crashes with a slab-use-after-free way down in the crypto API.Recommendations
To resolve the issue, update the Linux kernel to version 6.6.58 or later. As a temporary workaround, consider disabling the
decrypt raw data() function until a patch is available. Additionally, restrict access to the vulnerable SMB client module to minimize the risk of exploitation. Avoid using the smb2 decrypt offload() function in the affected API endpoint until the issue is resolved. At the moment, there is no other information about additional mitigation measures.Exploit
Fix
DoS
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Hat
Red Os
Suse
Ubuntu