CVE-2022-50481
cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.16% · top 94% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 – < 96fba6fb95bdede80583c262ac185da09661f264
- affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 – < 1ae581696b7a799afa39a664c4b721569643f58a
- affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 – < d775a1da5a52b4f4bb02f2707ba420d1bec48dbb
- affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 – < 60b2ed21a65f3f5318666ccd765c3507991370cf
- affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 – < 170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8
- affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 – < e5021bbf11b024cc65ea1e84c377df484183be4b
- affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 – < b32559ee4e6667c5c3daf4ec5454c277d1f255d2
- affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 – < ab44c182353be101c3be9465e1d15d42130c53c4
- affected 14baf4d9c739e6e69150512d2eb23c71fffcc192 – < 61c80d1c3833e196256fb060382db94f24d3d9a7
- affected 4.6
- unaffected < 4.6
- unaffected 4.9.337 – ≤ 4.9.*
- unaffected 4.14.303 – ≤ 4.14.*
- unaffected 4.19.270 – ≤ 4.19.*
- unaffected 5.4.229 – ≤ 5.4.*
- unaffected 5.10.163 – ≤ 5.10.*
- unaffected 5.15.86 – ≤ 5.15.*
- unaffected 6.0.16 – ≤ 6.0.*
- unaffected 6.1.2 – ≤ 6.1.*
- unaffected 6.2 – ≤ *
References (9)
- https://git.kernel.org/stable/c/96fba6fb95bdede80583c262ac185da09661f264 (opens in a new tab)
- https://git.kernel.org/stable/c/1ae581696b7a799afa39a664c4b721569643f58a (opens in a new tab)
- https://git.kernel.org/stable/c/d775a1da5a52b4f4bb02f2707ba420d1bec48dbb (opens in a new tab)
- https://git.kernel.org/stable/c/60b2ed21a65f3f5318666ccd765c3507991370cf (opens in a new tab)
- https://git.kernel.org/stable/c/170e8c2d2b61e15e7f7cfeded81bc1e959a15ed8 (opens in a new tab)
- https://git.kernel.org/stable/c/e5021bbf11b024cc65ea1e84c377df484183be4b (opens in a new tab)
- https://git.kernel.org/stable/c/b32559ee4e6667c5c3daf4ec5454c277d1f255d2 (opens in a new tab)
- https://git.kernel.org/stable/c/ab44c182353be101c3be9465e1d15d42130c53c4 (opens in a new tab)
- https://git.kernel.org/stable/c/61c80d1c3833e196256fb060382db94f24d3d9a7 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2022-50481)Record last updated .