{"id":"CVE-2022-50481","title":"cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()\n\nIf device_register() fails in cxl_register_afu|adapter(), the device\nis not added, device_unregister()…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 96fba6fb95bdede80583c262ac185da09661f264","Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 1ae581696b7a799afa39a664c4b721569643f58a","Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < d775a1da5a52b4f4bb02f2707ba420d1bec48dbb","Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 60b2ed21a65f3f5318666ccd765c3507991370cf","Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8","Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < e5021bbf11b024cc65ea1e84c377df484183be4b","Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < b32559ee4e6667c5c3daf4ec5454c277d1f255d2","Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < ab44c182353be101c3be9465e1d15d42130c53c4","Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 61c80d1c3833e196256fb060382db94f24d3d9a7","Linux 4.6"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:12:05.145213Z"},"published":"2025-10-04","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:20:48.495Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-50481","references":[{"url":"https://git.kernel.org/stable/c/96fba6fb95bdede80583c262ac185da09661f264"},{"url":"https://git.kernel.org/stable/c/1ae581696b7a799afa39a664c4b721569643f58a"},{"url":"https://git.kernel.org/stable/c/d775a1da5a52b4f4bb02f2707ba420d1bec48dbb"},{"url":"https://git.kernel.org/stable/c/60b2ed21a65f3f5318666ccd765c3507991370cf"},{"url":"https://git.kernel.org/stable/c/170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8"},{"url":"https://git.kernel.org/stable/c/e5021bbf11b024cc65ea1e84c377df484183be4b"},{"url":"https://git.kernel.org/stable/c/b32559ee4e6667c5c3daf4ec5454c277d1f255d2"},{"url":"https://git.kernel.org/stable/c/ab44c182353be101c3be9465e1d15d42130c53c4"},{"url":"https://git.kernel.org/stable/c/61c80d1c3833e196256fb060382db94f24d3d9a7"}],"tags":["cve.org"],"epss":0.00163,"epssPercentile":0.05555,"ingestedAt":"2026-11-05T22:38:31.740Z","slug":"CVE-2022-50481","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()\n\nIf device_register() fails in cxl_register_afu|adapter(), the device\nis not added, device_unregister() can not be called in the error path,\notherwise it will cause a null-ptr-deref because of removing not added\ndevice.\n\nAs comment of device_register() says, it should use put_device() to give\nup the reference in the error path. So split device_unregister() into\ndevice_del() and put_device(), then goes to put dev when register fails.\n\n## Affected\n\n- `Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 96fba6fb95bdede80583c262ac185da09661f264`\n- `Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 1ae581696b7a799afa39a664c4b721569643f58a`\n- `Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < d775a1da5a52b4f4bb02f2707ba420d1bec48dbb`\n- `Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 60b2ed21a65f3f5318666ccd765c3507991370cf`\n- `Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8`\n- `Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < e5021bbf11b024cc65ea1e84c377df484183be4b`\n- `Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < b32559ee4e6667c5c3daf4ec5454c277d1f255d2`\n- `Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < ab44c182353be101c3be9465e1d15d42130c53c4`\n- `Linux >= 14baf4d9c739e6e69150512d2eb23c71fffcc192 < 61c80d1c3833e196256fb060382db94f24d3d9a7`\n- `Linux 4.6`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}