Linux Kernel UAF in mm/mremap enables local privilege escalation
CVE-2023-1476 Published on November 3, 2023
Kpatch: mm/mremap.c: incomplete fix for cve-2022-41222
A use-after-free flaw was found in the Linux kernels 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 Analysis
CVE-2023-1476 is exploitable with local system access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Timeline
Reported to Red Hat.
Made public.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2023-1476 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2023-1476
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Affected Versions
Red Hat Enterprise Linux 8:Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.