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().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
df26d639e2f4628732a8da5a0f71e4e652ce809b to < d03abc1c2b21324550fa71e12d53e7d3498e0af6affecteddf26d639e2f4628732a8da5a0f71e4e652ce809b to < 4a8c29beb8a02b5a0a9d77d608aa14b6f88a6b86affecteddf26d639e2f4628732a8da5a0f71e4e652ce809b to < 72972552d0d0bfeb2dec5daf343a19018db36ffaaffecteddf26d639e2f4628732a8da5a0f71e4e652ce809b to < d58493832e284f066e559b8da5ab20c15a2801d3affecteddf26d639e2f4628732a8da5a0f71e4e652ce809b to < 58eb29dba712ab0f13af59ca2fe545f5ce360e78affecteddf26d639e2f4628732a8da5a0f71e4e652ce809b to < ae5a6a0b425e8f76a9f0677e50796e494e89b088affecteddf26d639e2f4628732a8da5a0f71e4e652ce809b to < 834e602d0cc7c743bfce734fad4a46cefc0f9ab1affecteddf26d639e2f4628732a8da5a0f71e4e652ce809b to < 4b4194c9a7a8f92db39e8e86c85f4fb12ebbec4faffecteddf26d639e2f4628732a8da5a0f71e4e652ce809b to < e3f88665a78045fe35c7669d2926b8d97b892c11affected
Linux Linux
Default version status: affected
4.8affected0 to < 4.8unaffected5.4.293 to ≤ 5.4.*unaffected5.10.237 to ≤ 5.10.*unaffected5.15.181 to ≤ 5.15.*unaffected6.1.135 to ≤ 6.1.*unaffected6.6.88 to ≤ 6.6.*unaffected6.12.24 to ≤ 6.12.*unaffected6.13.12 to ≤ 6.13.*unaffected6.14.3 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/d03abc1c2b21324550fa71e12d53e7d3498e0af6 ↗
- https://git.kernel.org/stable/c/4a8c29beb8a02b5a0a9d77d608aa14b6f88a6b86 ↗
- https://git.kernel.org/stable/c/72972552d0d0bfeb2dec5daf343a19018db36ffa ↗
- https://git.kernel.org/stable/c/d58493832e284f066e559b8da5ab20c15a2801d3 ↗
- https://git.kernel.org/stable/c/58eb29dba712ab0f13af59ca2fe545f5ce360e78 ↗
- https://git.kernel.org/stable/c/ae5a6a0b425e8f76a9f0677e50796e494e89b088 ↗
- https://git.kernel.org/stable/c/834e602d0cc7c743bfce734fad4a46cefc0f9ab1 ↗
- https://git.kernel.org/stable/c/4b4194c9a7a8f92db39e8e86c85f4fb12ebbec4f ↗
- https://git.kernel.org/stable/c/e3f88665a78045fe35c7669d2926b8d97b892c11 ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html ↗