Vulnerability identifier: #VU76455
Vulnerability risk: Low
CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-416
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 escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ext4 filesystem in the way it handled the extra inode size for extended attributes. A local user can trigger a use-after-free error and escalate privileges on the system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Linux kernel: All versions
External links
http://github.com/torvalds/linux/commit/67d7d8ad99be
http://lore.kernel.org/all/20220616021358.2504451-1-libaokun1@huawei.com/
http://bugzilla.redhat.com/show_bug.cgi?id=2193097
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.