GHSA-f39w-x49r-j8p2HighCVSS 8.2
In the Linux kernel, the following vulnerability has been resolved: ksmbd: avoid out of bounds...
🔗 CVE IDs covered (1)
📋 Description
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.
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2023-54250
- https://git.kernel.org/stable/c/39f5b4b313b445c980a2a295bed28228c29228ed
- https://git.kernel.org/stable/c/a2f6ded41bec1d3be643c80a5eb97f1680309001
- https://git.kernel.org/stable/c/e7067a446264a7514fa1cfaa4052cdb6803bc6a2
- https://git.kernel.org/stable/c/f02edb9debbd36f44efa7567031485892c7df60d
- https://github.com/advisories/GHSA-f39w-x49r-j8p2