IT

Tracker / CVE-2024-26981

CVE-2024-26981

High 7.8

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.

Affected products and versions

debian debian_linux
linux linux_kernel
linux linux_kernel · 2.6.30 → 4.19.313
linux linux_kernel · 4.20 → 5.4.275
linux linux_kernel · 5.11 → 5.15.157
linux linux_kernel · 5.16 → 6.1.88
linux linux_kernel · 5.5 → 5.10.216
linux linux_kernel · 6.2 → 6.6.29
linux linux_kernel · 6.7 → 6.8.8

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References