CVE-2023-6622: Kernel: null pointer dereference vulnerability in nft_dynset_init()
Vulnerability summary
CVE-2023-6622 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in fedoraproject fedora. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 25.2% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 16 · Related 13Timeline
- 08-12-2023PublishedVulnerability first disclosed.
- 06-11-2025Last modifiedVulnerability information updated.
Description
A null pointer dereference vulnerability was found in nft_dynset_init() in net/netfilter/nft_dynset.c in nf_tables in the Linux kernel. This issue may allow a local attacker with CAP_NET_ADMIN user privilege to trigger a denial of service.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.32%
Chance of exploitation in the next 30 days
Percentile
25%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.32% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu102 products
- linux< 5.15.0-94.104
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1053.58
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linux< 6.1.69-1 | < 6.6.8-1
Fedoraproject1 product
- fedoraEOL38 | 39
Linux1 product
- linux_kernel≥ 5.11, ≤ 6.6 | 6.7:rc1 | 6.7:rc2 | 6.7:rc3 | 6.7:rc4
Redhat1 product
- enterprise_linux8.0 | 9.0
5 vendors · 106 products
