CVE-2023-54250
Published: Dec 30, 2025
Modified: May 11, 2026
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 - < 39f5b4b313b445c980a2a295bed28228c29228edaffected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 - < a2f6ded41bec1d3be643c80a5eb97f1680309001affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 - < f02edb9debbd36f44efa7567031485892c7df60daffected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 - < e7067a446264a7514fa1cfaa4052cdb6803bc6a2 |
Linux | Linux | affected 5.15unaffected 0 - < 5.15unaffected 5.15.145 - <= 5.15.*unaffected 6.1.25 - <= 6.1.*unaffected 6.2.12 - <= 6.2.*+1 more versions |
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