CVE-2023-38432
First published: Tue Jul 18 2023(Updated: )
An issue was discovered in the Linux kernel before 6.3.10. fs/smb/server/smb2misc.c in ksmbd does not validate the relationship between the command payload size and the RFC1002 length specification, leading to an out-of-bounds read.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=5.15<5.15.121 | |
| Linux Kernel | >=5.16<6.1.36 | |
| Linux Kernel | >=6.2<6.3.10 | |
| netapp solidfire | ||
| netapp solidfire \& hci storage node | ||
| netapp h300s | ||
| netapp h410s | ||
| netapp h500s | ||
| netapp h700s | ||
| Linux Kernel | <6.3.10 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.13-1 |
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Reference Links
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/smb/server?id=2b9b8f3b68edb3d67d79962f02e26dbb5ae3808d
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.10
- https://security.netapp.com/advisory/ntap-20230831-0002/
- https://launchpad.net/bugs/cve/CVE-2023-38432
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-38432
- https://nvd.nist.gov/vuln/detail/CVE-2023-38432
- https://security-tracker.debian.org/tracker/CVE-2023-38432
- https://ubuntu.com/security/CVE-2023-38432
- https://git.kernel.org/linus/2b9b8f3b68edb3d67d79962f02e26dbb5ae3808d
Frequently Asked Questions
What is the severity of CVE-2023-38432?
CVE-2023-38432 is classified as a medium severity vulnerability due to its potential to lead to out-of-bounds reads in the Linux kernel.
How do I fix CVE-2023-38432?
To address CVE-2023-38432, upgrade to Linux kernel versions 6.3.10 or later, or apply available patches from your distribution.
What systems are affected by CVE-2023-38432?
CVE-2023-38432 affects Linux kernel versions before 6.3.10, including specific versions in the 5.15 and 5.16 series, as well as several NetApp appliances.
Is my Linux kernel version safe from CVE-2023-38432?
If your Linux kernel version is 6.3.10 or above, you are not vulnerable to CVE-2023-38432.
What type of vulnerability is CVE-2023-38432?
CVE-2023-38432 is a memory corruption issue resulting from improper validation of command payload sizes in the SMB protocol implementation.
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