Answer in brief
CVE-2023-53751 records a Critical severity (CVSS 9.8) vulnerability in cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname. 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.
CVSS is 9.8. 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 | >=93d5cb517db39e8af8d1292f9e785e4983b7f708 <64d62ac6d6514cba1305bd08e271ec1843bdd612 || >=93d5cb517db39e8af8d1292f9e785e4983b7f708 <c511954bf142fe1995aec3c739a9f1a76990283a || >=93d5cb517db39e8af8d1292f9e785e4983b7f708 <0b08c4c499200be67d54c439d56e5ea866869945 || >=93d5cb517db39e8af8d1292f9e785e4983b7f708 <90c49fce1c43e1cc152695e20363ff5087897c09 | 64d62ac6d6514cba1305bd08e271ec1843bdd612, c511954bf142fe1995aec3c739a9f1a76990283a, 0b08c4c499200be67d54c439d56e5ea866869945, 90c49fce1c43e1cc152695e20363ff5087897c09 |
| Linux/Linuxgeneric | 5.0 | Not reported |
Published upstream
Dec 8, 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 4, 2026
In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname TCP_Server_Info::hostname may be updated once or many times during reconnect, so protect its access outside reconnect path as well and then prevent any potential use-after-free bugs.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2023-53751 records a Critical severity (CVSS 9.8) vulnerability in cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname. 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.
CVSS is 9.8. 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 | >=93d5cb517db39e8af8d1292f9e785e4983b7f708 <64d62ac6d6514cba1305bd08e271ec1843bdd612 || >=93d5cb517db39e8af8d1292f9e785e4983b7f708 <c511954bf142fe1995aec3c739a9f1a76990283a || >=93d5cb517db39e8af8d1292f9e785e4983b7f708 <0b08c4c499200be67d54c439d56e5ea866869945 || >=93d5cb517db39e8af8d1292f9e785e4983b7f708 <90c49fce1c43e1cc152695e20363ff5087897c09 | 64d62ac6d6514cba1305bd08e271ec1843bdd612, c511954bf142fe1995aec3c739a9f1a76990283a, 0b08c4c499200be67d54c439d56e5ea866869945, 90c49fce1c43e1cc152695e20363ff5087897c09 |
| Linux/Linuxgeneric | 5.0 | Not reported |
Published upstream
Dec 8, 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 4, 2026
In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname TCP_Server_Info::hostname may be updated once or many times during reconnect, so protect its access outside reconnect path as well and then prevent any potential use-after-free bugs.
Quoted source text, attributed separately from HOL analysis.