CVE-2024-26673: netfilter: nft_ct: sanitize layer 3 and 4 protocol number in custom expectations
Vulnerability summary
CVE-2024-26673 is a high (CVSS 7.1) vulnerability in debian debian_linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.8% of scored vulnerabilities.
Not severe (CVSS 7.1, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 28 · Related 24Timeline
- 02-04-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_ct: sanitize layer 3 and 4 protocol number in custom expectations - Disallow families other than NFPROTO_{IPV4,IPV6,INET}. - Disallow layer 4 protocol with no ports, since destination port is a mandatory attribute for this object.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% 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 causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu112 products
- linux< 5.4.0-181.201 | < 5.15.0-106.116
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1124.134 | < 5.15.0-1061.67
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.82-1 | < 6.7.7-1
- debian_linuxEOL10.0
Linux2 products
- linux≥ 857b46027d6f91150797295752581b7155b9d0e1, < f549f340c91f08b938d60266e792ff7748dae483 | ≥ 857b46027d6f91150797295752581b7155b9d0e1, < 65ee90efc928410c6f73b3d2e0afdd762652c09d | ≥ 857b46027d6f91150797295752581b7155b9d0e1, < b775ced05489f4b77a35fe203e9aeb22f428e38f | ≥ 857b46027d6f91150797295752581b7155b9d0e1, < 0f501dae16b7099e69ee9b0d5c70b8f40fd30e98 | ≥ 857b46027d6f91150797295752581b7155b9d0e1, < cfe3550ea5df292c9e2d608e8c4560032391847e | ≥ 857b46027d6f91150797295752581b7155b9d0e1, < 38cc1605338d99205a263707f4dde76408d3e0e8 | ≥ 857b46027d6f91150797295752581b7155b9d0e1, < 8059918a1377f2f1fff06af4f5a4ed3d5acd6bc4 | 5.3
- linux_kernel≥ 5.3, < 5.4.269 | ≥ 5.5, < 5.10.210 | ≥ 5.11, < 5.15.149 | ≥ 5.16, < 6.1.77 | ≥ 6.2, < 6.6.16 | ≥ 6.7, < 6.7.4 | 6.8:rc1 | 6.8:rc2
3 vendors · 116 products
