CVE-2026-23017

Description

In the Linux kernel, the following vulnerability has been resolved:idpf: fix error handling in the init_task on loadIf the init_task fails during a driver load, we end up without vports andnetdevs, effectively failing the entire process. In that state asubsequent reset will result in a crash as the service task attempts toaccess uninitialized resources. Following trace is from an error in theinit_task where the CREATE_VPORT (op 501) is rejected by the FW:[40922.763136] idpf 0000:83:00.0: Device HW Reset initiated[40924.449797] idpf 0000:83:00.0: Transaction failed (op 501)[40958.148190] idpf 0000:83:00.0: HW reset detected[40958.161202] BUG: kernel null pointer dereference, address: 00000000000000a8...[40958.168094] Workqueue: idpf-0000:83:00.0-vc_event idpf_vc_event_task [idpf][40958.168865] RIP: 0010:idpf_vc_event_task+0x9b/0x350 [idpf]...[40958.177932] Call Trace:[40958.178491] [40958.179040] process_one_work+0x226/0x6d0[40958.179609] worker_thread+0x19e/0x340[40958.180158] __pfx_worker_thread+0x10/0x10[40958.180702] kthread+0x10f/0x250[40958.181238] __pfx_kthread+0x10/0x10[40958.181774] ret_from_fork+0x251/0x2b0[40958.182307] __pfx_kthread+0x10/0x10[40958.182834] ret_from_fork_asm+0x1a/0x30[40958.183370] Fix the error handling in the init_task to make sure the service andmailbox tasks are disabled if the error happens during load. These arestarted in idpf_vc_core_init(), which spawns the init_task and has no wayof knowing if it failed. If the error happens on reset, followingsuccessful driver load, the tasks can still run, as that will allow thenetdevs to attempt recovery through another reset. Stop the PTP callbackseither way as those will be restarted by the call to idpf_vc_core_init()during a successful reset.

Risk Information

Associated Vulnerability

Patch Details

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234