CVE-2023-52864
platform/x86: wmi: Fix opening of char device
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: platform/x86: wmi: Fix opening of char device Since commit fa1f68db6ca7 ("drivers: misc: pass miscdevice pointer via file private data"), the miscdevice stores a pointer to itself inside filp->private_data, which means that private_data will not be NULL when wmi_char_open() is called. This might cause memory corruption should wmi_char_open() be unable to find its driver, something which can happen when the associated WMI device is deleted in wmi_free_devices(). Fix the problem by using the miscdevice pointer to retrieve the WMI device data associated with a char device using container_of(). This also avoids wmi_char_open() picking a wrong WMI device bound to a driver with the same name as the original driver.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 81% 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: High 7.0.
Weakness
Affected products
- affected 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 – < cf098e937dd125c0317a0d6f261ac2a950a233d6
- affected 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 – < 9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203
- affected 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 – < d426a2955e45a95b2282764105fcfb110a540453
- affected 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 – < e0bf076b734a2fab92d8fddc2b8b03462eee7097
- affected 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 – < 44a96796d25809502c75771d40ee693c2e44724e
- affected 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 – < 36d85fa7ae0d6be651c1a745191fa7ef055db43e
- affected 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 – < fb7b06b59c6887659c6ed0ecd3110835eecbb6a3
- affected 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 – < eba9ac7abab91c8f6d351460239108bef5e7a0b6
- affected 4.15
- unaffected < 4.15
- unaffected 4.19.299 – ≤ 4.19.*
- unaffected 5.4.261 – ≤ 5.4.*
- unaffected 5.10.201 – ≤ 5.10.*
- unaffected 5.15.139 – ≤ 5.15.*
- unaffected 6.1.63 – ≤ 6.1.*
- unaffected 6.5.12 – ≤ 6.5.*
- unaffected 6.6.2 – ≤ 6.6.*
- unaffected 6.7 – ≤ *
References (8)
- https://git.kernel.org/stable/c/cf098e937dd125c0317a0d6f261ac2a950a233d6 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/44a96796d25809502c75771d40ee693c2e44724e (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/fb7b06b59c6887659c6ed0ecd3110835eecbb6a3 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/eba9ac7abab91c8f6d351460239108bef5e7a0b6 (opens in a new tab)x_transferred
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-2023-52864)Record last updated .