Vulnerability Details : CVE-2023-4015
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
On an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() can lead unbinding the chain and objects be deactivated but later used.
We recommend upgrading past commit 0a771f7b266b02d262900c75f1e175c7fe76fec2.
Vulnerability category: Memory CorruptionGain privilege
Products affected by CVE-2023-4015
- cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-4015
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-2023-4015
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-2023-4015
-
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: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-2023-4015
-
https://www.debian.org/security/2023/dsa-5492
Debian -- Security Information -- DSA-5492-1 linuxThird Party Advisory
-
https://kernel.dance/0a771f7b266b02d262900c75f1e175c7fe76fec2
🐧🕺Patch;Vendor Advisory
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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0a771f7b266b02d262900c75f1e175c7fe76fec2
kernel/git/torvalds/linux.git - Linux kernel source treeIssue Tracking;Mailing List;Patch;Vendor Advisory
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