Riskcovery

CVE-2025-37838

HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition

State
Published
Severity
7.8 High
Published
Apr 18, 2025
Updated
Aug 5, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

Description

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().

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCISA-ADP

Weaknesses

Affected Products

ProductVersions
LinuxLinux
  • df26d639e2f4628732a8da5a0f71e4e652ce809b to before d03abc1c2b21324550fa71e12d53e7d3498e0af6Affected
  • df26d639e2f4628732a8da5a0f71e4e652ce809b to before 4a8c29beb8a02b5a0a9d77d608aa14b6f88a6b86Affected
  • df26d639e2f4628732a8da5a0f71e4e652ce809b to before 72972552d0d0bfeb2dec5daf343a19018db36ffaAffected
  • df26d639e2f4628732a8da5a0f71e4e652ce809b to before d58493832e284f066e559b8da5ab20c15a2801d3Affected
  • df26d639e2f4628732a8da5a0f71e4e652ce809b to before 58eb29dba712ab0f13af59ca2fe545f5ce360e78Affected
  • df26d639e2f4628732a8da5a0f71e4e652ce809b to before ae5a6a0b425e8f76a9f0677e50796e494e89b088Affected
  • df26d639e2f4628732a8da5a0f71e4e652ce809b to before 834e602d0cc7c743bfce734fad4a46cefc0f9ab1Affected
  • df26d639e2f4628732a8da5a0f71e4e652ce809b to before 4b4194c9a7a8f92db39e8e86c85f4fb12ebbec4fAffected
  • df26d639e2f4628732a8da5a0f71e4e652ce809b to before e3f88665a78045fe35c7669d2926b8d97b892c11Affected
LinuxLinux
  • 4.8Affected
  • before 4.8Not affected
  • 5.4.293 through 5.4.*Not affected
  • 5.10.237 through 5.10.*Not affected
  • 5.15.181 through 5.15.*Not affected
  • 6.1.135 through 6.1.*Not affected
  • 6.6.88 through 6.6.*Not affected
  • 6.12.24 through 6.12.*Not affected
  • 6.13.12 through 6.13.*Not affected
  • 6.14.3 through 6.14.*Not affected
  • 6.15 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.