#VU100130 Input validation error in Linux kernel - CVE-2024-50202

Vulnerability identifier: #VU100130

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-50202

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the nilfs_lookup(), nilfs_do_unlink(), nilfs_rename() and nilfs_get_parent() functions in fs/nilfs2/namei.c, within the nilfs_readdir(), nilfs_find_entry() and nilfs_inode_by_name() functions in fs/nilfs2/dir.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
http://git.kernel.org/stable/c/c1d0476885d708a932980b0f28cd90d9bd71db39
http://git.kernel.org/stable/c/edf8146057264191d5bfe5b91773f13d936dadd3
http://git.kernel.org/stable/c/270a6f9df35fa2aea01ec23770dc9b3fc9a12989
http://git.kernel.org/stable/c/9698088ac7704e260f492d9c254e29ed7dd8729a
http://git.kernel.org/stable/c/efa810b15a25531cbc2f527330947b9fe16916e7
http://git.kernel.org/stable/c/08cfa12adf888db98879dbd735bc741360a34168

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.