CVE-2026-31538
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
smb: server: make use of smbdirect_socket.recv_io.credits.available
In the Linux kernel, the following vulnerability has been resolved: smb: server: 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. This fixes regression Namjae reported with the 6.18 release.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 89b021a72663c4d96d8a8b85272bb42d991a1c6f | affected | git | 66c082e3d4651e8629a393a9e182b01eb50fb0a3 | Unavailable | None listed |
| 89b021a72663c4d96d8a8b85272bb42d991a1c6f | affected | git | 809cbd31aa4f87a1b889532244c9cf30eb022385 | Unavailable | None listed |
| 89b021a72663c4d96d8a8b85272bb42d991a1c6f | affected | git | 26ad87a2cfb8c1384620d1693a166ed87303046e | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.18 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.18 | Unavailable | None listed |
| 6.18.11 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.1 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |