CVE-2026-31535None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: smb: client: make use of smbdirect_socket.recv_io.credits.available The logic off managing recv credits by counting posted recv_io and granted credits is racy. That's…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.09%
In the Linux kernel, the following vulnerability has been resolved:
smb: client: make use of smbdirect_socket.recv_io.credits.available
The logic off managing recv credits by counting posted recv_io and granted credits is racy.
That's because the peer might already consumed a credit, but between receiving the incoming recv at the hardware and processing the completion in the 'recv_done' functions we likely have a window where we grant credits, which don't really exist.
So we better have a decicated counter for the available credits, which will be incremented when we posted new recv buffers and drained when we grant the credits to the peer.
Linux >= 5fb9b459b3686e366640edd4e62805ef7b4de927 < f664e6e8a81103cb45c8802a9bc7499e0902c458Linux >= 5fb9b459b3686e366640edd4e62805ef7b4de927 < be8845ad5d6558703d20567d8702155598325db8Linux >= 5fb9b459b3686e366640edd4e62805ef7b4de927 < 9911b1ed187a770a43950bf51f340ad4b7beecbaLinux 6.18Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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