PT-2024-29211 · Linux+6 · Linux Kernel+6
Hobin Woo
+3
·
Published
2024-07-05
·
Updated
2026-05-26
·
CVE-2024-41030
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.6.43
Description
The issue is related to the ksmbd component in the Linux kernel, where the
may open() function does not allow a directory to be opened with write access. However, some writing flags set by the client result in adding write access on the server, making ksmbd incompatible with the FUSE file system. The problem is resolved by discarding the write access when opening a directory. A list add corruption issue is also mentioned, with a kernel bug at lib/list debug.c:26. The call trace includes functions such as list add valid(), fuse finish open(), and smb2 open().Recommendations
Update to Linux kernel version 6.6.43 or later to resolve the issue. As a temporary workaround, consider disabling the
ksmbd component until a patch is available. Restrict access to the vulnerable fuse module to minimize the risk of exploitation. Avoid using the smb2 open() function in the affected API endpoint until the issue is resolved.Exploit
Fix
DoS
NULL Pointer Dereference
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Related Identifiers
Affected Products
Astra Linux
Fuse
Linuxmint
Linux Kernel
Red Os
Ubuntu
Ksmbd