CVE-2022-48642netfilter: nf_tables: fix percpu memory leak at nf_tables_addchain()
- 5.5MediumCVSS base score
- 0.23%Exploitation in 30 daysEPSS · top 86% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix percpu memory leak at nf_tables_addchain() It seems to me that percpu memory for chain stats started leaking since commit 3bc158f8d0330f0a ("netfilter: nf_tables: map basechain priority to hardware priority") when nft_chain_offload_priority() returned an error.
Timeline
ID reserved
By Linux
- 2 months later
· 2 months later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.23% · top 86% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 3bc158f8d0330f0ac58597c023acca2234c14616 – < b043a525a3f5520abb676a7cd8f6328fdf959e88
- affected 3bc158f8d0330f0ac58597c023acca2234c14616 – < 08d7524f366a886b99b1630a24a27dd6e0d7f852
- affected 3bc158f8d0330f0ac58597c023acca2234c14616 – < 985b031667c3177b9e7fb9787b989628e4271714
- affected 3bc158f8d0330f0ac58597c023acca2234c14616 – < 9a4d6dd554b86e65581ef6b6638a39ae079b17ac
- affected 5.3
- unaffected < 5.3
- unaffected 5.10.146 – ≤ 5.10.*
- unaffected 5.15.71 – ≤ 5.15.*
- unaffected 5.19.12 – ≤ 5.19.*
- unaffected 6.0 – ≤ *
References
References4
- https://git.kernel.org/stable/c/b043a525a3f5520abb676a7cd8f6328fdf959e88 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/08d7524f366a886b99b1630a24a27dd6e0d7f852 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/985b031667c3177b9e7fb9787b989628e4271714 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/9a4d6dd554b86e65581ef6b6638a39ae079b17ac (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-51337 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-48642)Record last updated .