Vulnerability Details : CVE-2023-3609
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.
Vulnerability category: Memory CorruptionGain privilege
Products affected by CVE-2023-3609
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.4:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.4:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.4:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.4:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.4:rc3:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-3609
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-2023-3609
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. | |
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2023-3609
-
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: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-2023-3609
-
https://kernel.dance/04c55383fa5689357bcdd2c8036725a55ed632bc
🐧🕺Vendor Advisory
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=04c55383fa5689357bcdd2c8036725a55ed632bc
kernel/git/torvalds/linux.git - Linux kernel source treeMailing List;Patch;Vendor Advisory
-
https://www.debian.org/security/2023/dsa-5480
Debian -- Security Information -- DSA-5480-1 linuxThird Party Advisory
-
http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
Kernel Live Patch Security Notice LSN-0099-1 ≈ Packet Storm
-
https://security.netapp.com/advisory/ntap-20230818-0005/
July 2023 Linux Kernel 6.3 Vulnerabilities in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
[SECURITY] [DLA 3623-1] linux-5.10 security updateMailing List;Third Party Advisory
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http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html
Kernel Live Patch Security Notice LSN-0098-1 ≈ Packet StormThird Party Advisory;VDB Entry
-
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
[SECURITY] [DLA 3710-1] linux security update
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