CVE-2026-46158In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: always decrease sk refcount When an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer().
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: always decrease sk refcount When an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer(). It should then be released in all cases at the end. Some (unlikely) checks were returning directly instead of calling sock_put() to decrease the refcount. Jump to a new 'exit' label to call __sock_put() (which will become sock_put() in the next commit) to fix this potential leak. While at it, drop the '!msk' check which cannot happen because it is never reset, and explicitly mark the remaining one as "unlikely".
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 5.10 before 6.6.142; from 6.7 before 6.12.92; from 6.13 before 6.18.30; from 6.19 before 7.0.7; 7.1; 7.1 | NVD |
References
- https://git.kernel.org/stable/c/25e37407442b8766ec2cf52fb4e31b5c3d3aeeaepatch
- https://git.kernel.org/stable/c/81d8142148164176385c279c7c1e1d581867423d
- https://git.kernel.org/stable/c/9426265e157dd77ec237c795901ed4dea6d69b5cpatch
- https://git.kernel.org/stable/c/9634cb35af17019baec21ca648516ce376fa10e6patch
- https://git.kernel.org/stable/c/acd3d3562315c99f3c0db16f0fcc5f0306638982patch
- https://git.kernel.org/stable/c/b41dd76f3b9735096c21d3e799a2b9fe36498d57patch
- https://git.kernel.org/stable/c/e9ba34301d2e90f63f97c76ad9eb98e5250fe961
- https://git.kernel.org/stable/c/f5555a6d7c472849fdf2b426e3d0a85103118793
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.