GHSA-f39w-x49r-j8p2

GHSA-f39w-x49r-j8p2 PUBLISHED CVSS 8.199999809265137 HIGH

Record from GitHub Advisory Database · Published December 30, 2025

In the Linux kernel, the following vulnerability has been resolved: ksmbd: avoid out of bounds access in decode_preauth_ctxt() Confirm that the accessed pneg_ctxt->HashAlgorithms address sits within the SMB request boundary; deassemble_neg_contexts() only checks that the eight byte smb2_neg_context header + (client controlled) DataLength are within the packet boundary, which is insufficient. Checking for sizeof(struct smb2_preauth_neg_context) is overkill given that the type currently assumes SMB311_SALT_SIZE bytes of trailing Salt.

Risk scores

CVSS 3.1

8.199999809265137

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Timeline

Dec 30, 2025 CVE Published
Aug 6, 2026 Security Advisory

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The same record, from the CLI:

vulnetix vdb vuln GHSA-f39w-x49r-j8p2
vulnetix vdb fixes GHSA-f39w-x49r-j8p2

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curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/GHSA-f39w-x49r-j8p2/fixes/registry"

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