Answer in brief
CVE-2025-37820 records a Unknown severity vulnerability in xen-netfront: handle NULL returned by xdp_convert_buff_to_frame(). 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 | >=6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c <5b83d30c63f9964acb1bc63eb8e670b9e0d2c240 || >=6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c <cefd8a2e2de46209ce66e6d30c237eb59b6c5bfa || >=6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c <d6a9c4e6f9b3ec3ad98468c950ad214af8a2efb9 || >=6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c <eefccd889df3b49d92e7349d94c4aa7e1ba19f6c || >=6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c <cc3628dcd851ddd8d418bf0c897024b4621ddc92 | 5b83d30c63f9964acb1bc63eb8e670b9e0d2c240, cefd8a2e2de46209ce66e6d30c237eb59b6c5bfa, d6a9c4e6f9b3ec3ad98468c950ad214af8a2efb9, eefccd889df3b49d92e7349d94c4aa7e1ba19f6c, cc3628dcd851ddd8d418bf0c897024b4621ddc92 |
| Linux/Linuxgeneric | 5.9 | Not reported |
Published upstream
May 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 5, 2026
In the Linux kernel, the following vulnerability has been resolved: xen-netfront: handle NULL returned by xdp_convert_buff_to_frame() The function xdp_convert_buff_to_frame() may return NULL if it fails to correctly convert the XDP buffer into an XDP frame due to memory constraints, internal errors, or invalid data. Failing to check for NULL may lead to a NULL pointer dereference if the result is used later in processing, potentially causing crashes, data corruption, or undefined behavior. On XDP redirect failure, the associated page must be released explicitly if it was previously retained via get_page(). Failing to do so may result in a memory leak, as the pages reference count is not decremented.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-37820 records a Unknown severity vulnerability in xen-netfront: handle NULL returned by xdp_convert_buff_to_frame(). 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 | >=6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c <5b83d30c63f9964acb1bc63eb8e670b9e0d2c240 || >=6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c <cefd8a2e2de46209ce66e6d30c237eb59b6c5bfa || >=6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c <d6a9c4e6f9b3ec3ad98468c950ad214af8a2efb9 || >=6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c <eefccd889df3b49d92e7349d94c4aa7e1ba19f6c || >=6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c <cc3628dcd851ddd8d418bf0c897024b4621ddc92 | 5b83d30c63f9964acb1bc63eb8e670b9e0d2c240, cefd8a2e2de46209ce66e6d30c237eb59b6c5bfa, d6a9c4e6f9b3ec3ad98468c950ad214af8a2efb9, eefccd889df3b49d92e7349d94c4aa7e1ba19f6c, cc3628dcd851ddd8d418bf0c897024b4621ddc92 |
| Linux/Linuxgeneric | 5.9 | Not reported |
Published upstream
May 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 5, 2026
In the Linux kernel, the following vulnerability has been resolved: xen-netfront: handle NULL returned by xdp_convert_buff_to_frame() The function xdp_convert_buff_to_frame() may return NULL if it fails to correctly convert the XDP buffer into an XDP frame due to memory constraints, internal errors, or invalid data. Failing to check for NULL may lead to a NULL pointer dereference if the result is used later in processing, potentially causing crashes, data corruption, or undefined behavior. On XDP redirect failure, the associated page must be released explicitly if it was previously retained via get_page(). Failing to do so may result in a memory leak, as the pages reference count is not decremented.
Quoted source text, attributed separately from HOL analysis.