CVE-2026-31537 (GCVE-0-2026-31537)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:30 – Updated: 2026-04-25 05:48
VLAI?
Title
smb: server: make use of smbdirect_socket.send_io.bcredits
Summary
In the Linux kernel, the following vulnerability has been resolved: smb: server: make use of smbdirect_socket.send_io.bcredits It turns out that our code will corrupt the stream of reassabled data transfer messages when we trigger an immendiate (empty) send. In order to fix this we'll have a single 'batch' credit per connection. And code getting that credit is free to use as much messages until remaining_length reaches 0, then the batch credit it given back and the next logical send can happen.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 5ef18a2e66f2f33fdac64437bddfb9fe6389fdc7 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 79242e7b6bc63efec28b7c235bc320806afce6c0 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 34abd408c8ba24d7c97bd02ba874d8c714f49db1 (git)
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    Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (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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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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