Use-after-free in kpatch-patch-4_18_0-425_10_1 (Red Hat package) - CVE-2023-1476

Vulnerability identifier: #VU76016

CSH Severity: Low

CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-1476

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a missing patch for #VU68422 (CVE-2022-41222). A local user can gain access to sensitive information.

kpatch-patch-4_18_0-425_10_1 (Red Hat package)
kpatch-patch-4_18_0-425_13_1 (Red Hat package)
kpatch-patch-4_18_0-425_3_1 (Red Hat package)
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power, little endian

Install updates from vendor's website.

kpatch-patch-4_18_0-425_10_1 (Red Hat package) - update to 1-4.el8_7
kpatch-patch-4_18_0-425_13_1 (Red Hat package) - update to 1-2.el8_7
kpatch-patch-4_18_0-425_3_1 (Red Hat package) - update to 1-6.el8

• https://bugzilla.redhat.com/show_bug.cgi?id=2176035

• Red Hat Enterprise Linux 8 update for kpatch-patch