CVE-2023-52576
"Linux Kernel memblock Use After Free Vulnerability"
Description
In the Linux kernel, the following vulnerability has been resolved: x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer() The code calling ima_free_kexec_buffer() runs long after the memblock allocator has already been torn down, potentially resulting in a use after free in memblock_isolate_range(). With KASAN or KFENCE, this use after free will result in a BUG from the idle task, and a subsequent kernel panic. Switch ima_free_kexec_buffer() over to memblock_free_late() to avoid that bug.
INFO
Published Date :
March 2, 2024, 10:15 p.m.
Last Modified :
April 8, 2025, 3:04 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update the Linux kernel to a patched version.
- Reboot the system after the update.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-52576.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-52576 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-52576
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-52576 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-52576 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Apr. 08, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.5.6 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.13 up to (excluding) 6.1.56 Added Reference Type CVE: https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685b Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2b Types: Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685b Added Reference https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204 Added Reference https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2b -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 01, 2024
Action Type Old Value New Value Added CWE CISA-ADP CWE-416 Added CVSS V3.1 CISA-ADP AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 02, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer() The code calling ima_free_kexec_buffer() runs long after the memblock allocator has already been torn down, potentially resulting in a use after free in memblock_isolate_range(). With KASAN or KFENCE, this use after free will result in a BUG from the idle task, and a subsequent kernel panic. Switch ima_free_kexec_buffer() over to memblock_free_late() to avoid that bug. Added Reference Linux https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2b [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685b [No types assigned]