Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 before 96fba6fb95bdede80583c262ac185da09661f264; affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 before 1ae581696b7a799afa39a664c4b721569643f58a; affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 before d775a1da5a52b4f4bb02f2707ba420d1bec48dbb; affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 before 60b2ed21a65f3f5318666ccd765c3507991370cf; affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 before 170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8; affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 before e5021bbf11b024cc65ea1e84c377df484183be4b; affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 before b32559ee4e6667c5c3daf4ec5454c277d1f255d2; affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 before ab44c182353be101c3be9465e1d15d42130c53c4; affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 before 61c80d1c3833e196256fb060382db94f24d3d9a7 |
| Linux / Linux | affected 4.6; unaffected 0 before 4.6; unaffected 4.9.337 through 4.9.*; unaffected 4.14.303 through 4.14.*; unaffected 4.19.270 through 4.19.*; unaffected 5.4.229 through 5.4.*; unaffected 5.10.163 through 5.10.*; unaffected 5.15.86 through 5.15.*; unaffected 6.0.16 through 6.0.*; unaffected 6.1.2 through 6.1.*; unaffected 6.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/96fba6fb95bdede80583c262ac185da09661f264
- https://git.kernel.org/stable/c/1ae581696b7a799afa39a664c4b721569643f58a
- https://git.kernel.org/stable/c/d775a1da5a52b4f4bb02f2707ba420d1bec48dbb
- https://git.kernel.org/stable/c/60b2ed21a65f3f5318666ccd765c3507991370cf
- https://git.kernel.org/stable/c/170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8
- https://git.kernel.org/stable/c/e5021bbf11b024cc65ea1e84c377df484183be4b
- https://git.kernel.org/stable/c/b32559ee4e6667c5c3daf4ec5454c277d1f255d2
- https://git.kernel.org/stable/c/ab44c182353be101c3be9465e1d15d42130c53c4
- https://git.kernel.org/stable/c/61c80d1c3833e196256fb060382db94f24d3d9a7