Answer in brief
CVE-2023-54250 records a Unknown severity vulnerability in ksmbd: avoid out of bounds access in decode_preauth_ctxt(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <39f5b4b313b445c980a2a295bed28228c29228ed || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <a2f6ded41bec1d3be643c80a5eb97f1680309001 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <f02edb9debbd36f44efa7567031485892c7df60d || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <e7067a446264a7514fa1cfaa4052cdb6803bc6a2 | 39f5b4b313b445c980a2a295bed28228c29228ed, a2f6ded41bec1d3be643c80a5eb97f1680309001, f02edb9debbd36f44efa7567031485892c7df60d, e7067a446264a7514fa1cfaa4052cdb6803bc6a2 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Dec 30, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2023-54250 records a Unknown severity vulnerability in ksmbd: avoid out of bounds access in decode_preauth_ctxt(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <39f5b4b313b445c980a2a295bed28228c29228ed || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <a2f6ded41bec1d3be643c80a5eb97f1680309001 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <f02edb9debbd36f44efa7567031485892c7df60d || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <e7067a446264a7514fa1cfaa4052cdb6803bc6a2 | 39f5b4b313b445c980a2a295bed28228c29228ed, a2f6ded41bec1d3be643c80a5eb97f1680309001, f02edb9debbd36f44efa7567031485892c7df60d, e7067a446264a7514fa1cfaa4052cdb6803bc6a2 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Dec 30, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.