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CVE-2023-4244

Use-after-free in Linux kernel's netfilter: nf_tables component

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.



Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability.



We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 4.19.316
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.262
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.198
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.134
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.56
Linux ≫ Linux Kernel Version >= 6.2.0 < 6.4.11
Debian ≫ Debian Linux Version 10.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.137
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
cve-coordination@google.com 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
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https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e91b0ebd994635df2346353322ac51ce84ce6d8
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https://kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8
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