CVE-2022-50473None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: cpufreq: Init completion before kobject_init_and_add() In cpufreq_policy_alloc(), it will call uninitialed completion in cpufreq_sysfs_release() when kobject_init_and_…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
cpufreq: Init completion before kobject_init_and_add()
In cpufreq_policy_alloc(), it will call uninitialed completion in cpufreq_sysfs_release() when kobject_init_and_add() fails. And that will cause a crash such as the following page fault in complete:
BUG: unable to handle page fault for address: fffffffffffffff8 [..] RIP: 0010:complete+0x98/0x1f0 [..] Call Trace: kobject_put+0x1be/0x4c0 cpufreq_online.cold+0xee/0x1fd cpufreq_add_dev+0x183/0x1e0 subsys_interface_register+0x3f5/0x4e0 cpufreq_register_driver+0x3b7/0x670 acpi_cpufreq_init+0x56c/0x1000 [acpi_cpufreq] do_one_initcall+0x13d/0x780 do_init_module+0x1c3/0x630 load_module+0x6e67/0x73b0 __do_sys_finit_module+0x181/0x240 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < 3cdd91a9163248935720927531066b74f57aa43bLinux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < e379b88a8f8cffc99b318e028705ed9e3da0e1e0Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < 8fb4c98f20dfca1237de2e3dfdbe78d156784fd3Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < d88540acfc7a17079021d866de914112c396edb1Linux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < e7c0c943ed675b66d4bbb16c51c6a3bb58da047eLinux >= 4ebe36c94aed95de71a8ce6a6762226d31c938ee < 5c51054896bcce1d33d39fead2af73fec24f40b6Linux e977b1477a6725868302957e6b5c330220391797Linux >= 5.1.6 < 5.2Linux 5.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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