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CVE-2026-43185

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix signededness bug in smb_direct_prepare_negotiation() smb_direct_prepare_negotiation() casts an unsigned __u32 value from sp->max_recv_size and req->preferred_send_size to a signed int before computing min_t(int, ...). A maliciously provided preferred_send_size of 0x80000000 will return as smaller than max_recv_size, and then be used to set the maximum allowed alowed receive size for the next message. By sending a s
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:04f4d11b8ae95339e2bf0f68499410cfd2d7724af1f1adaa3a7239ffc721e44c
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/transport_rdma.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.16","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05da2766956a059b2a75fe598dd402b3e016c3f1c28042c6ce78e8aa1716934b · sha256:fb1f52b18acabc5e… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/transport_rdma.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ceae058eb707ddd0d68f0872f9d9f23b7c30c37b","status":"affected","version":"0626e6641f6b467447c81dd7678a69c66f7746cf","versionType":"git"},{"lessThan":"55abc475d096da4a5356b6efb0cfdc6156bc1550","status":"affected","version":"0626e6641f6b467447c81dd7678a69c66f7746cf","versionType":"git"},{"lessThan":"6b4f875aac344cdd52a1f34cc70ed2f874a65757","status":"affected","version":"0626e6641f6b467…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05da2766956a059b2a75fe598dd402b3e016c3f1c28042c6ce78e8aa1716934b · sha256:fb1f52b18acabc5e… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/transport_rdma.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.16","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05da2766956a059b2a75fe598dd402b3e016c3f1c28042c6ce78e8aa1716934b · sha256:fb1f52b18acabc5e… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/transport_rdma.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ceae058eb707ddd0d68f0872f9d9f23b7c30c37b","status":"affected","version":"0626e6641f6b467447c81dd7678a69c66f7746cf","versionType":"git"},{"lessThan":"55abc475d096da4a5356b6efb0cfdc6156bc1550","status":"affected","version":"0626e6641f6b467447c81dd7678a69c66f7746cf","versionType":"git"},{"lessThan":"6b4f875aac344cdd52a1f34cc70ed2f874a65757","status":"affected","version":"0626e6641f6b467…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:05da2766956a059b2a75fe598dd402b3e016c3f1c28042c6ce78e8aa1716934b · sha256:fb1f52b18acabc5e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:05da2766956a059b2a75fe598dd402b3e016c3f1c28042c6ce78e8aa1716934b · sha256:fb1f52b18acabc5e… · /containers/cna/metrics/0/cvssV3_1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/55abc475d096da4a5356b6efb0cfdc6156bc1550"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:05da2766956a059b2a75fe598dd402b3e016c3f1c28042c6ce78e8aa1716934b · sha256:fb1f52b18acabc5e… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/6b4f875aac344cdd52a1f34cc70ed2f874a65757"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:05da2766956a059b2a75fe598dd402b3e016c3f1c28042c6ce78e8aa1716934b · sha256:fb1f52b18acabc5e… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/ceae058eb707ddd0d68f0872f9d9f23b7c30c37b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:05da2766956a059b2a75fe598dd402b3e016c3f1c28042c6ce78e8aa1716934b · sha256:fb1f52b18acabc5e… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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