In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix OOB in nilfs_set_de_type
The size of the nilfs_type_by_mode array in the fs/nilfs2/dir.c file is
defined as "S_IFMT >> S_SHIFT", but the nilfs_set_de_type() function,
which uses this array, specifies the index to read from the array in the
same way as "(mode & S_IFMT) >> S_SHIFT".
static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode
*inode)
{
umode_t mode = inode->i_mode;
de->file_type = nilfs_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; // oob
}
However, when the index is determined this way, an out-of-bounds (OOB)
error occurs by referring to an index that is 1 larger than the array size
when the condition "mode & S_IFMT == S_IFMT" is satisfied. Therefore, a
patch to resize the nilfs_type_by_mode array should be applied to prevent
OOB errors.
References
Configurations
Configuration 1 (hide)
|
Configuration 2 (hide)
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History
04 Nov 2025, 18:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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Information
Published : 2024-05-01 06:15
Updated : 2025-11-04 18:15
NVD link : CVE-2024-26981
Mitre link : CVE-2024-26981
CVE.ORG link : CVE-2024-26981
JSON object : View
Products Affected
linux
- linux_kernel
debian
- debian_linux
CWE
CWE-129
Improper Validation of Array Index