CVE-2024-50120: smb: client: Handle kstrdup failures for passwords
First published: Tue Nov 05 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: smb: client: Handle kstrdup failures for passwords In smb3_reconfigure(), after duplicating ctx->password and ctx->password2 with kstrdup(), we need to check for allocation failures. If ses->password allocation fails, return -ENOMEM. If ses->password2 allocation fails, free ses->password, set it to NULL, and return -ENOMEM.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=6.6.24<6.6.59 | |
| Linux Kernel | >=6.7.12<6.8 | |
| Linux Kernel | >=6.8.3<6.9 | |
| Linux Kernel | >=6.9<6.11.6 | |
| Linux Kernel | =6.12-rc1 | |
| Linux Kernel | =6.12-rc2 | |
| Linux Kernel | =6.12-rc3 | |
| Linux Kernel | =6.12-rc4 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
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Reference Links
- https://git.kernel.org/stable/c/35dbac8c328d6afe937cd45ecd41d209d0b9f8b8
- https://git.kernel.org/stable/c/35488799b0ab6e4327f82e1d9209a60805665b37
- https://git.kernel.org/stable/c/9a5dd61151399ad5a5d69aad28ab164734c1e3bc
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-50120
- https://nvd.nist.gov/vuln/detail/CVE-2024-50120
- https://launchpad.net/bugs/cve/CVE-2024-50120
- https://security-tracker.debian.org/tracker/CVE-2024-50120
- https://ubuntu.com/security/CVE-2024-50120
- https://git.kernel.org/linus/9a5dd61151399ad5a5d69aad28ab164734c1e3bc
Frequently Asked Questions
What is the severity of CVE-2024-50120?
CVE-2024-50120 is classified as a medium severity vulnerability due to potential memory allocation failures in the Linux kernel's SMB client.
How do I fix CVE-2024-50120?
Upgrading to versions of the Linux kernel that are not affected, specifically after the patches following version 6.12-rc4, can address CVE-2024-50120.
Which Linux kernel versions are affected by CVE-2024-50120?
Linux kernel versions from 6.6.24 to 6.6.59, as well as several versions between 6.7.12 to 6.8, and 6.9 to 6.11.6 are affected by CVE-2024-50120.
What impact does CVE-2024-50120 have on system security?
CVE-2024-50120 could potentially lead to denial of service due to unhandled memory allocation failures in the SMB client.
Is CVE-2024-50120 related to any specific component of the Linux kernel?
CVE-2024-50120 specifically affects the SMB client in the Linux kernel, particularly in the password handling mechanism.
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