Vulnerability · Published Nov 3, 2023 · Assigned by redhat
CVE-2023-1476Kpatch: mm/mremap.c: incomplete fix for cve-2022-41222
High 7.0
In plain English
A high-severity use-after-free in Red Hat Enterprise Linux 8 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.2%top 85.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | see references |
Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- RHSA-2023:1659 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2023-1476 vdb-entry, x_refsource_REDHAT
- RHBZ#2176035 issue-tracking, x_refsource_REDHAT
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2