Answer in brief
CVE-2025-22037 records a Unknown severity vulnerability in ksmbd: fix null pointer dereference in alloc_preauth_hash(). 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 | >=0626e6641f6b467447c81dd7678a69c66f7746cf <cce57cd8c5dead24127cf2308fdd60fcad2d6ba6 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad || >=0626e6641f6b467447c81dd7678a69c66f7746cf <8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d || >=0626e6641f6b467447c81dd7678a69c66f7746cf <b8eb243e670ecf30e91524dd12f7260dac07d335 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780 | cce57cd8c5dead24127cf2308fdd60fcad2d6ba6, ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad, 8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d, b8eb243e670ecf30e91524dd12f7260dac07d335, c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Apr 16, 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: fix null pointer dereference in alloc_preauth_hash() The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn->preauth_info is not allocated. This patch add KSMBD_SESS_NEED_SETUP status of connection to ignore session setup request if smb2 negotiate phase is not complete.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-22037 records a Unknown severity vulnerability in ksmbd: fix null pointer dereference in alloc_preauth_hash(). 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 | >=0626e6641f6b467447c81dd7678a69c66f7746cf <cce57cd8c5dead24127cf2308fdd60fcad2d6ba6 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad || >=0626e6641f6b467447c81dd7678a69c66f7746cf <8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d || >=0626e6641f6b467447c81dd7678a69c66f7746cf <b8eb243e670ecf30e91524dd12f7260dac07d335 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780 | cce57cd8c5dead24127cf2308fdd60fcad2d6ba6, ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad, 8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d, b8eb243e670ecf30e91524dd12f7260dac07d335, c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Apr 16, 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: fix null pointer dereference in alloc_preauth_hash() The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn->preauth_info is not allocated. This patch add KSMBD_SESS_NEED_SETUP status of connection to ignore session setup request if smb2 negotiate phase is not complete.
Quoted source text, attributed separately from HOL analysis.