#VU78725 Out-of-bounds read in Linux kernel - CVE-2022-48502

Vulnerability identifier: #VU78725

Vulnerability risk: Low

CVSSv4.0: 4.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-48502

CWE-ID: CWE-125

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the ntfs_set_ea() function in fs/ntfs3/xattr.c in Linux kernel ntfs3 subsystem. A local user can trigger an out-of-bounds read error and read contents of memory on the system or crash the OS kernel.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 6.2, 6.2

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External links
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0e8235d28f3a0e9eda9f02ff67ee566d5f42b66b
https://syzkaller.appspot.com/bug?extid=8778f030156c6cd16d72
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2
https://security.netapp.com/advisory/ntap-20230703-0004/

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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.