Use After Free in Linux Kernel
CVE-2023-1476
A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.
Vulnerability class: Use-After-Free
EPSS: 0.002 (14.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux Linux_kernel
- Red Hat Enterprise Linux 8
- Redhat Enterprise_linux — versions 8.0
- Redhat Enterprise_linux_eus — versions 8.8
- Redhat Enterprise_linux_for_power_little_endian — versions 8.0_ppc64le
- Redhat Enterprise_linux_for_power_little_endian_eus — versions 8.8_ppc64le
- Redhat Enterprise_linux_server_tus — versions 8.8
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, Third Party Advisory, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Issue Tracking)
- secalert@redhat.com (Patch, Mailing List)
Frequently asked questions
- What is CVE-2023-1476?
- CVE-2023-1476 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.0/10. Published 2023-11-03.
- How severe is CVE-2023-1476?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2023-1476 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.