CVE-2026-31535 (GCVE-0-2026-31535)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:30 – Updated: 2026-04-24 14:30
VLAI?
Title
smb: client: make use of smbdirect_socket.recv_io.credits.available
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5fb9b459b3686e366640edd4e62805ef7b4de927 , < f664e6e8a81103cb45c8802a9bc7499e0902c458 (git)
Affected: 5fb9b459b3686e366640edd4e62805ef7b4de927 , < be8845ad5d6558703d20567d8702155598325db8 (git)
Affected: 5fb9b459b3686e366640edd4e62805ef7b4de927 , < 9911b1ed187a770a43950bf51f340ad4b7beecba (git)
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    Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.11 , ≤ 6.18.* (semver)
Unaffected: 6.19.1 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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    "dateReserved": "2026-03-09T15:48:24.113Z",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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