Vulnerability Details : CVE-2023-6932
A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation.
A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread.
We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.
Vulnerability category: Memory CorruptionGain privilege
Products affected by CVE-2023-6932
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-6932
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-6932
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
Google Inc. | |
7.0
|
HIGH | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.0
|
5.9
|
NIST | |
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
N/A
|
N/A
|
RedHat-CVE-2023-6932 |
CWE ids for CVE-2023-6932
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by:
- cve-coordination@google.com (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2023-6932
-
https://kernel.dance/e2b706c691905fe78468c361aaabc719d0a496f1
🐧🕺Patch
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http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html
Kernel Live Patch Security Notice LSN-0100-1 ≈ Packet Storm
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https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
[SECURITY] [DLA 3711-1] linux-5.10 security update
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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=e2b706c691905fe78468c361aaabc719d0a496f1
ipv4: igmp: fix refcnt uaf issue when receiving igmp query packet - kernel/git/torvalds/linux.git - Linux kernel source treeMailing List;Patch
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https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
[SECURITY] [DLA 3710-1] linux security update
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