Description
In the Linux kernel, the following vulnerability has been resolved:
thermal: core: Fix thermal zone governor cleanup issues
If thermal_zone_device_register_with_trips() fails after adding a thermal governor to the thermal zone being registered, the governor is not removed from it as appropriate which may lead to a memory leak.
In turn, thermal_zone_device_unregister() calls thermal_set_governor() without acquiring the thermal zone lock beforehand which may race with a governor update via sysfs and may lead to a use-after-free in that case.
Address these issues by adding two thermal_set_governor() calls, one to thermal_release() to remove the governor from the given thermal zone, and one to the thermal zone registration error path to cover failures preceding the thermal zone device registration.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8, < a172fa18bc370b776ac1510abb0dcb50a7a35fac; >= e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8, < 8e563d8db50f303171aceb79eec0807e7ba06951; >= e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8, < d4eb861adde5ce22e459fbd29366f47bb2167977; >= e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8, < 37a430a2d4e66ec8238da6c7f7e48809bf265e13; >= e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8, < f412e541d25a3dfaf3d53e012ade6ff03cae8a45; >= e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8, < 75f8f3c3e09122270986de9d7aa347d701676761; >= e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8, < 64d4ebf91d082034bbc5ae3ba2d7fd800bc02d06; >= e33df1d2f3a0141cd79e770f31999ba0dd7ebfa8, < 41ff66baf81c6541f4f985dd7eac4494d03d9440 |
| Linux | Linux | 4.2 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | >= V3.1.6, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | >= V3.1.7, < * |
References
- https://git.kernel.org/stable/c/37a430a2d4e66ec8238da6c7f7e48809bf265e13Patch
- https://git.kernel.org/stable/c/41ff66baf81c6541f4f985dd7eac4494d03d9440Patch
- https://git.kernel.org/stable/c/64d4ebf91d082034bbc5ae3ba2d7fd800bc02d06Patch
- https://git.kernel.org/stable/c/75f8f3c3e09122270986de9d7aa347d701676761Patch
- https://git.kernel.org/stable/c/8e563d8db50f303171aceb79eec0807e7ba06951
- https://git.kernel.org/stable/c/a172fa18bc370b776ac1510abb0dcb50a7a35fac
- https://git.kernel.org/stable/c/d4eb861adde5ce22e459fbd29366f47bb2167977
- https://git.kernel.org/stable/c/f412e541d25a3dfaf3d53e012ade6ff03cae8a45Patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
Timeline
- Published
- May 27, 2026
- Last modified
- Nov 10, 2026
- NVD status
- Modified