CVE-2023-53561None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: net: wwan: iosm: fix NULL pointer dereference when removing device In suspend and resume cycle, the removal and rescan of device ends up in NULL pointer dereference. …
▾ 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
0.1%
In the Linux kernel, the following vulnerability has been resolved:
net: wwan: iosm: fix NULL pointer dereference when removing device
In suspend and resume cycle, the removal and rescan of device ends up in NULL pointer dereference.
During driver initialization, if the ipc_imem_wwan_channel_init() fails to get the valid device capabilities it returns an error and further no resource (wwan struct) will be allocated. Now in this situation if driver removal procedure is initiated it would result in NULL pointer exception since unallocated wwan struct is dereferenced inside ipc_wwan_deinit().
ipc_imem_run_state_worker() to handle the called functions return value and to release the resource in failure case. It also reports the link down event in failure cases. The user space application can handle this event to do a device reset for restoring the device communication.
Linux >= 3670970dd8c661c10c10c300d726f59428eaad32 < ee44bacf462db3ec6e4f0dcfa7931e768670d77cLinux >= 3670970dd8c661c10c10c300d726f59428eaad32 < 862c6e3e26735247d8a4df41fa2421909c3f4d63Linux >= 3670970dd8c661c10c10c300d726f59428eaad32 < 60829145f1e2650b31ebe6a0ec70a9725b38fa2cLinux 5.14Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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