CVE-2026-46170mptcp: pm: ADD_ADDR rtx: free sk if last
- 5.5MediumCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 98% 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: mptcp: pm: ADD_ADDR rtx: free sk if last When an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer(), and released at the end. If at that moment, it was the last reference being held, the sk would not be freed. sock_put() should then be called instead of __sock_put(). But that's not enough: if it is the last reference, sock_put() will call sk_free(), which will end up calling sk_stop_timer_sync() on the same timer, and waiting indefinitely to finish. So it is needed to mark that the timer is done at the end of the timer handler when it has not been rescheduled, not to call sk_stop_timer_sync() on "itself".
Timeline
ID reserved
By Linux
- 15 days later
· 15 days later
Published
- 5 months later
· 5 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)
- 0.13% · top 98% of all CVEs (15 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 00cfd77b9063dcdf3628a7087faba60de85a9cc8 – < aa8cabde7e83bf96269ee47427dc9b59e3ed8e60
- affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 – < 1f26487e83e69462540bb1047139472957c913c6
- affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 – < 5da972efed3dc7599da6e2b5e8d906d1b7b1a728
- affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 – < 6a3af482188f6db4186d1605f64d911d7330abb3
- affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 – < 531c537b8fb620beabccfb1594e8d43cbebbb87a
- affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 – < b74ad20198652b6b39a761c277ba65ae82b1e107
- affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 – < 8143a224785ceaf2b0856e08d4498916f38228fb
- affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 – < b7b9a461569734d33d3259d58d2507adfac107ed
- affected 5.10
- unaffected < 5.10
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.218 – ≤ 5.15.*
- unaffected 6.1.185 – ≤ 6.1.*
- unaffected 6.6.142 – ≤ 6.6.*
- unaffected 6.12.92 – ≤ 6.12.*
- unaffected 6.18.30 – ≤ 6.18.*
- unaffected 7.0.7 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References8
- https://git.kernel.org/stable/c/aa8cabde7e83bf96269ee47427dc9b59e3ed8e60 (opens in a new tab)
- https://git.kernel.org/stable/c/1f26487e83e69462540bb1047139472957c913c6 (opens in a new tab)
- https://git.kernel.org/stable/c/5da972efed3dc7599da6e2b5e8d906d1b7b1a728 (opens in a new tab)
- https://git.kernel.org/stable/c/6a3af482188f6db4186d1605f64d911d7330abb3 (opens in a new tab)
- https://git.kernel.org/stable/c/531c537b8fb620beabccfb1594e8d43cbebbb87a (opens in a new tab)
- https://git.kernel.org/stable/c/b74ad20198652b6b39a761c277ba65ae82b1e107 (opens in a new tab)
- https://git.kernel.org/stable/c/8143a224785ceaf2b0856e08d4498916f38228fb (opens in a new tab)
- https://git.kernel.org/stable/c/b7b9a461569734d33d3259d58d2507adfac107ed (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-2026-32797 (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-2026-46170)Record last updated .