CVE-2022-50481
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…
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.16% probability · 5th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8Patch
- https://git.kernel.org/stable/c/1ae581696b7a799afa39a664c4b721569643f58aPatch
- https://git.kernel.org/stable/c/60b2ed21a65f3f5318666ccd765c3507991370cfPatch
- https://git.kernel.org/stable/c/61c80d1c3833e196256fb060382db94f24d3d9a7Patch
- https://git.kernel.org/stable/c/96fba6fb95bdede80583c262ac185da09661f264Patch
- https://git.kernel.org/stable/c/ab44c182353be101c3be9465e1d15d42130c53c4Patch
- https://git.kernel.org/stable/c/b32559ee4e6667c5c3daf4ec5454c277d1f255d2Patch
- https://git.kernel.org/stable/c/d775a1da5a52b4f4bb02f2707ba420d1bec48dbbPatch
- https://git.kernel.org/stable/c/e5021bbf11b024cc65ea1e84c377df484183be4bPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.