CVEvulnerability
CVE-2026-31539
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-04-24
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-362
Description
In the Linux kernel, the following vulnerability has been resolved:
smb: smbdirect: introduce 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.
Affected configurations
• linux linux kernel (>= 6.18 < 6.18.11)
• linux linux kernel (>= 6.19 < 6.19.1)
Related
Weakness · CWE (1)
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness