- 5.5MediumCVSS base score
- 0.18%Exploitation in 30 daysEPSS · top 92% 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: ctnetlink: remove refcounting in expectation dumpers Same pattern as previous patch: do not keep the expectation object alive via refcount, only store a cookie value and then use that as the skip hint for dump resumption. AFAICS this has the same issue as the one resolved in the conntrack dumper, when we do if (!refcount_inc_not_zero(&exp->use)) to increment the refcount, there is a chance that exp == last, which causes a double-increment of the refcount and subsequent memory leak.
Timeline
ID reserved
By Linux
- 5 months later
· 5 months later
Published
- 14 months later
· 14 months 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 · Modified | 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)
- 0.18% · top 92% of all CVEs (12 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 cf6994c2b9812a9f02b99e89df411ffc5db9c779 – < b05500444b8eb97644efdd180839a04a706be97c
- affected cf6994c2b9812a9f02b99e89df411ffc5db9c779 – < bada48ad5b0590e318d0f79636ff62a2ef9f4955
- affected cf6994c2b9812a9f02b99e89df411ffc5db9c779 – < 64b7684042246e3238464c66894e30ba30c7e851
- affected cf6994c2b9812a9f02b99e89df411ffc5db9c779 – < 9e5021a906532ca16e2aac69c0607711e1c70b1f
- affected cf6994c2b9812a9f02b99e89df411ffc5db9c779 – < 078d33c95bf534d37aa04269d1ae6158e20082d5
- affected cf6994c2b9812a9f02b99e89df411ffc5db9c779 – < a4d634ded4d3d400f115d84f654f316f249531c9
- affected cf6994c2b9812a9f02b99e89df411ffc5db9c779 – < 1492e3dcb2be3aa46d1963da96aa9593e4e4db5a
- affected 2.6.23
- unaffected < 2.6.23
- unaffected 5.10.253 – ≤ 5.10.*
- unaffected 5.15.203 – ≤ 5.15.*
- unaffected 6.1.167 – ≤ 6.1.*
- unaffected 6.6.130 – ≤ 6.6.*
- unaffected 6.12.78 – ≤ 6.12.*
- unaffected 6.16.2 – ≤ 6.16.*
- unaffected 6.17 – ≤ *
References
References10
- https://git.kernel.org/stable/c/b05500444b8eb97644efdd180839a04a706be97c (opens in a new tab)
- https://git.kernel.org/stable/c/bada48ad5b0590e318d0f79636ff62a2ef9f4955 (opens in a new tab)
- https://git.kernel.org/stable/c/64b7684042246e3238464c66894e30ba30c7e851 (opens in a new tab)
- https://git.kernel.org/stable/c/9e5021a906532ca16e2aac69c0607711e1c70b1f (opens in a new tab)
- https://git.kernel.org/stable/c/078d33c95bf534d37aa04269d1ae6158e20082d5 (opens in a new tab)
- https://git.kernel.org/stable/c/a4d634ded4d3d400f115d84f654f316f249531c9 (opens in a new tab)
- https://git.kernel.org/stable/c/1492e3dcb2be3aa46d1963da96aa9593e4e4db5a (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html (opens in a new tab)
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-2025-28948 (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-2025-39764)Record last updated .