# CVE-2023-54058: linux: In the Linux kernel, the following vulnerability has been resolved:  firmware: arm_ffa: Check if ffa_driver remove is...

CVE-2023-54058 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-54058, released December 24, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-54058
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 24, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  firmware: arm_ffa: Check if ffa_driver remove is present before executing  Currently ffa_drv->remove() is called unconditionally from ffa_device_remove(). Since the driver registration doesn't check for it and allows it to be registered without .remove callback, we need to check for the presence of it before executing it from ffa_device_remove() to above a NULL pointer dereference like the one below:    | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000   | Mem abort info:   |   ESR = 0x0000000086000004   |   EC = 0x21: IABT (current EL), IL = 32 bits   |   SET = 0, FnV = 0   |   EA = 0, S1PTW = 0   |   FSC = 0x04: level 0 translation fault   | user pgtable: 4k pages, 48-bit VAs, pgdp=0000000881cc8000   | [0000000000000000] pgd=0000000000000000, p4d=0000000000000000   | Internal error: Oops: 0000000086000004 [#1] PREEMPT SMP   | CPU: 3 PID: 130 Comm: rmmod Not tainted 6.3.0-rc7 #6   | Hardware name: FVP Base RevC (DT)   | pstate: 63402809 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=-c)   | pc : 0x0   | lr : ffa_device_remove+0x20/0x2c   | Call trace:   |  0x0   |  device_release_driver_internal+0x16c/0x260   |  driver_detach+0x90/0xd0   |  bus_remove_driver+0xdc/0x11c   |  driver_unregister+0x30/0x54   |  ffa_driver_unregister+0x14/0x20   |  cleanup_module+0x18/0xeec   |  __arm64_sys_delete_module+0x234/0x378   |  invoke_syscall+0x40/0x108   |  el0_svc_common+0xb4/0xf0   |  do_el0_svc+0x30/0xa4   |  el0_svc+0x2c/0x7c   |  el0t_64_sync_handler+0x84/0xf0   |  el0t_64_sync+0x190/0x194

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.37-1 | [DEBIAN-CVE-2023-54058](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54058.md) | Dec 24, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-54058](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54058.md) | Dec 24, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-54058](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54058.md) | Dec 24, 2025 |

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