# CVE-2024-26784: linux: In the Linux kernel, the following vulnerability has been resolved:  pmdomain: arm: Fix NULL dereference on scmi_perf...

CVE-2024-26784 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-26784, released April 4, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-26784
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 4, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  pmdomain: arm: Fix NULL dereference on scmi_perf_domain removal  On unloading of the scmi_perf_domain module got the below splat, when in the DT provided to the system under test the '#power-domain-cells' property was missing. Indeed, this particular setup causes the probe to bail out early without giving any error, which leads to the ->remove() callback gets to run too, but without all the expected initialized structures in place.  Add a check and bail out early on remove too.   Call trace:   scmi_perf_domain_remove+0x28/0x70 [scmi_perf_domain]   scmi_dev_remove+0x28/0x40 [scmi_core]   device_remove+0x54/0x90   device_release_driver_internal+0x1dc/0x240   driver_detach+0x58/0xa8   bus_remove_driver+0x78/0x108   driver_unregister+0x38/0x70   scmi_driver_unregister+0x28/0x180 [scmi_core]   scmi_perf_domain_driver_exit+0x18/0xb78 [scmi_perf_domain]   __arm64_sys_delete_module+0x1a8/0x2c0   invoke_syscall+0x50/0x128   el0_svc_common.constprop.0+0x48/0xf0   do_el0_svc+0x24/0x38   el0_svc+0x34/0xb8   el0t_64_sync_handler+0x100/0x130   el0t_64_sync+0x190/0x198  Code: a90153f3 f9403c14 f9414800 955f8a05 (b9400a80)  ---[ end trace 0000000000000000 ]---

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.7.9-1 | [DEBIAN-CVE-2024-26784](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26784.md) | Apr 4, 2024 |
| Linux | linux Debian 14 | 6.7.9-1 | [DEBIAN-CVE-2024-26784](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26784.md) | Apr 4, 2024 |

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