CVE-2021-47073platform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios
- 5.5MediumCVSS base score
- 0.24%Exploitation in 30 daysEPSS · top 85% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: platform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios init_dell_smbios_wmi() only registers the dell_smbios_wmi_driver on systems where the Dell WMI interface is supported. While exit_dell_smbios_wmi() unregisters it unconditionally, this leads to the following oops: [ 175.722921] ------------[ cut here ]------------ [ 175.722925] Unexpected driver unregister! [ 175.722939] WARNING: CPU: 1 PID: 3630 at drivers/base/driver.c:194 driver_unregister+0x38/0x40 ... [ 175.723089] Call Trace: [ 175.723094] cleanup_module+0x5/0xedd [dell_smbios] ... [ 175.723148] ---[ end trace 064c34e1ad49509d ]--- Make the unregister happen on the same condition the register happens to fix this.
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
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)
- 0.24% · top 85% of all CVEs (12 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.
Affected products
- affected 1a258e670434f404a4500b65ba1afea2c2b29bba – < 75cfc833da4a2111106d4c134e93e0c7f41e35e7
- affected 1a258e670434f404a4500b65ba1afea2c2b29bba – < 6fa78a6b9a3beb676a010dc489c1257f7e432525
- affected 1a258e670434f404a4500b65ba1afea2c2b29bba – < 0cf036a0d325200e6c27b90908e51195bbc557b1
- affected 1a258e670434f404a4500b65ba1afea2c2b29bba – < 8d746ea7c687bab060a2c05a35c449302406cd52
- affected 1a258e670434f404a4500b65ba1afea2c2b29bba – < 3a53587423d25c87af4b4126a806a0575104b45e
- affected 4.15
- unaffected < 4.15
- unaffected 4.19.192 – ≤ 4.19.*
- unaffected 5.4.122 – ≤ 5.4.*
- unaffected 5.10.40 – ≤ 5.10.*
- unaffected 5.12.7 – ≤ 5.12.*
- unaffected 5.13 – ≤ *
References
References5
- https://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e (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)
- EUVD EUVD-2021-33721 (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)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-47073)Record last updated .