#VU111534 Use-after-free in Linux kernel - CVE-2022-50215
Published: June 20, 2025 / Updated: June 21, 2025
Vulnerability identifier: #VU111534
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-50215
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
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 sg_link_reserve(), sg_read(), sg_ioctl_common(), sg_unlink_reserve() and sg_remove_request() functions in drivers/scsi/sg.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/03d8241112d5e3cccce1a01274a221099f07d2e1
- https://git.kernel.org/stable/c/3455607fd7be10b449f5135c00dc306b85dc0d21
- https://git.kernel.org/stable/c/35e60ec39e862159cb92923eefd5230d4a873cb9
- https://git.kernel.org/stable/c/408bfa1489a3cfe7150b81ab0b0df99b23dd5411
- https://git.kernel.org/stable/c/8c004b7dbb340c1e5889f5fb9e5baa6f6e5303e8
- https://git.kernel.org/stable/c/bbc118acf7baf9e93c5e1314d14f481301af4d0f
- https://git.kernel.org/stable/c/ed9afd967cbfe7da2dc0d5e52c62a778dfe9f16b
- https://git.kernel.org/stable/c/f135c65085eed869d10e4e7923ce1015288618da
- https://git.kernel.org/stable/c/f5e61d9b4a699dd16f32d5f39eb1cf98d84c92ed
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.291