Answer in brief
CVE-2025-37838 records a High severity (CVSS 7.8) vulnerability in HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition. 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 7.8. 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 | >=df26d639e2f4628732a8da5a0f71e4e652ce809b <d03abc1c2b21324550fa71e12d53e7d3498e0af6 || >=df26d639e2f4628732a8da5a0f71e4e652ce809b <4a8c29beb8a02b5a0a9d77d608aa14b6f88a6b86 || >=df26d639e2f4628732a8da5a0f71e4e652ce809b <72972552d0d0bfeb2dec5daf343a19018db36ffa || >=df26d639e2f4628732a8da5a0f71e4e652ce809b <d58493832e284f066e559b8da5ab20c15a2801d3 || >=df26d639e2f4628732a8da5a0f71e4e652ce809b <58eb29dba712ab0f13af59ca2fe545f5ce360e78 || >=df26d639e2f4628732a8da5a0f71e4e652ce809b <ae5a6a0b425e8f76a9f0677e50796e494e89b088 || >=df26d639e2f4628732a8da5a0f71e4e652ce809b <834e602d0cc7c743bfce734fad4a46cefc0f9ab1 || >=df26d639e2f4628732a8da5a0f71e4e652ce809b <4b4194c9a7a8f92db39e8e86c85f4fb12ebbec4f || >=df26d639e2f4628732a8da5a0f71e4e652ce809b <e3f88665a78045fe35c7669d2926b8d97b892c11 | d03abc1c2b21324550fa71e12d53e7d3498e0af6, 4a8c29beb8a02b5a0a9d77d608aa14b6f88a6b86, 72972552d0d0bfeb2dec5daf343a19018db36ffa, d58493832e284f066e559b8da5ab20c15a2801d3, 58eb29dba712ab0f13af59ca2fe545f5ce360e78, ae5a6a0b425e8f76a9f0677e50796e494e89b088, 834e602d0cc7c743bfce734fad4a46cefc0f9ab1, 4b4194c9a7a8f92db39e8e86c85f4fb12ebbec4f, e3f88665a78045fe35c7669d2926b8d97b892c11 |
| Linux/Linuxgeneric | 4.8 | Not reported |
Published upstream
Apr 18, 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: HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition In the ssi_protocol_probe() function, &ssi->work is bound with ssip_xmit_work(), In ssip_pn_setup(), the ssip_pn_xmit() function within the ssip_pn_ops structure is capable of starting the work. If we remove the module which will call ssi_protocol_remove() to make a cleanup, it will free ssi through kfree(ssi), while the work mentioned above will be used. The sequence of operations that may lead to a UAF bug is as follows: CPU0 CPU1 | ssip_xmit_work ssi_protocol_remove | kfree(ssi); | | struct hsi_client *cl = ssi->cl; | // use ssi Fix it by ensuring that the work is canceled before proceeding with the cleanup in ssi_protocol_remove().
Quoted source text, attributed separately from HOL analysis.