In the Linux kernel, the following vulnerability has been resolved: net: netdevsim: don't try to destroy PHC on VFs PHC gets initialized in nsim_init_netdevsim(), which is only called if (nsim_dev_port_is_pf()). Create a counterpart of nsim_init_netdevsim() and move the mock_phc_destroy() there. This fixes a crash trying to destroy netdevsim with VFs instantiated, as caught by running the devlink.sh test: BUG: kernel NULL pointer dereference, address: 00000000000000b8 RIP: 0010:mock_phc_destroy+0xd/0x30 Call Trace: <TASK> nsim_destroy+0x4a/0x70 [netdevsim] __nsim_dev_port_del+0x47/0x70 [netdevsim] nsim_dev_reload_destroy+0x105/0x120 [netdevsim] nsim_drv_remove+0x2f/0xb0 [netdevsim] device_release_driver_internal+0x1a1/0x210 bus_remove_device+0xd5/0x120 device_del+0x159/0x490 device_unregister+0x12/0x30 del_device_store+0x11a/0x1a0 [netdevsim] kernfs_fop_write_iter+0x130/0x1d0 vfs_write+0x30b/0x4b0 ksys_write+0x69/0xf0 do_syscall_64+0xcc/0x1e0 entry_SYSCALL_64_after_hwframe+0x6f/0x77
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-02-22T16:13:32.442Z

Updated: 2024-08-02T00:07:19.707Z

Reserved: 2024-02-19T14:20:24.126Z

Link: CVE-2024-26587

cve-icon Vulnrichment

Updated: 2024-07-05T15:20:37.677Z

cve-icon NVD

Status : Analyzed

Published: 2024-02-22T17:15:08.937

Modified: 2024-03-18T18:09:54.027

Link: CVE-2024-26587

cve-icon Redhat

Severity : Low

Publid Date: 2024-02-22T00:00:00Z

Links: CVE-2024-26587 - Bugzilla