CVE-2023-1476: Kpatch: mm/mremap.c: incomplete fix for cve-2022-41222
First published: Tue Mar 07 2023(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/Kernel | <5.14 | 5.14 |
| Linux Linux kernel | <5.14 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux Eus | =8.8 | |
| Redhat Enterprise Linux For Power Little Endian | =8.0_ppc64le | |
| Redhat Enterprise Linux For Power Little Endian Eus | =8.8_ppc64le | |
| Redhat Enterprise Linux Server Tus | =8.8 |
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Reference Links
- https://access.redhat.com/errata/RHSA-2023:1659
- https://access.redhat.com/security/cve/CVE-2023-1476
- https://bugzilla.redhat.com/show_bug.cgi?id=2176035
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2
- https://access.redhat.com/security/cve/cve-2023-1476
- https://www.cve.org/CVERecord?id=CVE-2023-1476 https://nvd.nist.gov/vuln/detail/CVE-2023-1476 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2
Frequently Asked Questions
What is CVE-2023-1476?
CVE-2023-1476 is an incomplete fix for CVE-2022-41222, a use-after-free flaw in the Linux kernel's memory address space accounting code.
What is the severity of CVE-2023-1476?
The severity of CVE-2023-1476 is high with a CVSS severity score of 7.
How does CVE-2023-1476 impact the system?
CVE-2023-1476 can allow a local user to crash the system or potentially escalate their privileges.
Which software versions are affected by CVE-2023-1476?
Linux kernel versions up to and excluding 5.14, Redhat Enterprise Linux 8.0, Redhat Enterprise Linux Eus 8.8, Redhat Enterprise Linux For Power Little Endian 8.0_ppc64le, Redhat Enterprise Linux For Power Little Endian Eus 8.8_ppc64le, and Redhat Enterprise Linux Server Tus 8.8 are affected by CVE-2023-1476.
How can I fix CVE-2023-1476?
To fix CVE-2023-1476, update your Linux kernel to version 5.14 or apply the necessary patches provided by Redhat.
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