5.5

CVE-2022-50481

cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.6 < 4.9.337
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.303
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.270
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.229
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.163
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.86
Linux ≫ Linux Kernel Version >= 5.16 < 6.0.16
Linux ≫ Linux Kernel Version >= 6.1 < 6.1.2
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.045
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/96fba6fb95bdede80583c262ac185da09661f264
Patch
https://git.kernel.org/stable/c/1ae581696b7a799afa39a664c4b721569643f58a
Patch
https://git.kernel.org/stable/c/d775a1da5a52b4f4bb02f2707ba420d1bec48dbb
Patch
https://git.kernel.org/stable/c/60b2ed21a65f3f5318666ccd765c3507991370cf
Patch
https://git.kernel.org/stable/c/170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8
Patch
https://git.kernel.org/stable/c/e5021bbf11b024cc65ea1e84c377df484183be4b
Patch
https://git.kernel.org/stable/c/b32559ee4e6667c5c3daf4ec5454c277d1f255d2
Patch
https://git.kernel.org/stable/c/ab44c182353be101c3be9465e1d15d42130c53c4
Patch
https://git.kernel.org/stable/c/61c80d1c3833e196256fb060382db94f24d3d9a7
Patch