7.8

CVE-2023-3609

Use-after-free in Linux kernel's net/sched: cls_u32 component

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.



If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.



We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.14 < 4.14.322
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.291
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.248
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.185
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.118
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.35
Linux ≫ Linux Kernel Version >= 6.2 < 6.3.9
Linux ≫ Linux Kernel Version 6.4 Update rc1
Linux ≫ Linux Kernel Version 6.4 Update rc2
Linux ≫ Linux Kernel Version 6.4 Update rc3
Linux ≫ Linux Kernel Version 6.4 Update rc4
Linux ≫ Linux Kernel Version 6.4 Update rc5
Linux ≫ Linux Kernel Version 6.4 Update rc6
Debian ≫ Debian Linux Version 10.0
Debian ≫ Debian Linux Version 11.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.45% 0.365
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 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
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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
Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
Third Party Advisory
Mailing List
https://www.debian.org/security/2023/dsa-5480
Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=04c55383fa5689357bcdd2c8036725a55ed632bc
Patch
Vendor Advisory
Mailing List
https://kernel.dance/04c55383fa5689357bcdd2c8036725a55ed632bc
Vendor Advisory
https://security.netapp.com/advisory/ntap-20230818-0005/
Third Party Advisory
http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html
Third Party Advisory
VDB Entry
http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
Third Party Advisory