CVE-2024-26981
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.3% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.3% · EPSS, next 30 days
- Weakness
- CWE-129
- Record status
- Modified
Affected
- Linux Kernel < 4.19.313
- Linux Kernel < 5.4.275
- Linux Kernel < 5.10.216
- Linux Kernel < 5.15.157
- Linux Kernel < 6.1.88
- Linux Kernel < 6.6.29
- Linux Kernel < 6.8.8
- Linux Kernel 6.9
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2024-26981.md and follow it. Check whether this project is affected by CVE-2024-26981. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243
- https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9
- https://git.kernel.org/stable/c/7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1
- https://git.kernel.org/stable/c/897ac5306bbeb83e90c437326f7044c79a17c611
- https://git.kernel.org/stable/c/90823f8d9ecca3d5fa6b102c8e464c62f416975f
- https://git.kernel.org/stable/c/90f43980ea6be4ad903e389be9a27a2a0018f1c8
- https://git.kernel.org/stable/c/bdbe483da21f852c93b22557b146bc4d989260f0
- https://git.kernel.org/stable/c/c4a7dc9523b59b3e73fd522c73e95e072f876b16
- https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243
- https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9
References
- https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243
- https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9
- https://git.kernel.org/stable/c/7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1
- https://git.kernel.org/stable/c/897ac5306bbeb83e90c437326f7044c79a17c611
- https://git.kernel.org/stable/c/90823f8d9ecca3d5fa6b102c8e464c62f416975f
- https://git.kernel.org/stable/c/90f43980ea6be4ad903e389be9a27a2a0018f1c8
- https://git.kernel.org/stable/c/bdbe483da21f852c93b22557b146bc4d989260f0
- https://git.kernel.org/stable/c/c4a7dc9523b59b3e73fd522c73e95e072f876b16
- https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243
- https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9
- https://git.kernel.org/stable/c/7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1
- https://git.kernel.org/stable/c/897ac5306bbeb83e90c437326f7044c79a17c611
- https://git.kernel.org/stable/c/90823f8d9ecca3d5fa6b102c8e464c62f416975f
- https://git.kernel.org/stable/c/90f43980ea6be4ad903e389be9a27a2a0018f1c8
- https://git.kernel.org/stable/c/bdbe483da21f852c93b22557b146bc4d989260f0
- https://git.kernel.org/stable/c/c4a7dc9523b59b3e73fd522c73e95e072f876b16
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://lists.fedoraproject.org/archives/list/[email protected]/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/