CVE-2022-50481None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter() If device_register() fails in cxl_register_afu|adapter(), the device is not added, device_unregister()…
▾ 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:
cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()
If device_register() fails in cxl_register_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device.
As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails.
Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 96fba6fb95bdede80583c262ac185da09661f264Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 1ae581696b7a799afa39a664c4b721569643f58aLinux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < d775a1da5a52b4f4bb02f2707ba420d1bec48dbbLinux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 60b2ed21a65f3f5318666ccd765c3507991370cfLinux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < e5021bbf11b024cc65ea1e84c377df484183be4bLinux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < b32559ee4e6667c5c3daf4ec5454c277d1f255d2Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < ab44c182353be101c3be9465e1d15d42130c53c4Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 61c80d1c3833e196256fb060382db94f24d3d9a7Linux 4.6Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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