CVE-2026-74552hwmon: (lm90) Only report alarms if driver is ready
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 93% 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: hwmon: (lm90) Only report alarms if driver is ready Userspace can read sysfs attributes before driver registration is complete, immediately after devm_hwmon_device_register_with_info() has been called. At that time, data->hwmon_dev is not yet initialized. This can trigger a NULL pointer access since lm90_update_device() and with it lm90_update_alarms_locked() will be called. This call schedules report_work and lm90_report_alarms(), which passes the still-NULL data->hwmon_dev to hwmon_notify_event() and triggers a NULL pointer dereference. Fix the problem by only scheduling the report and alert workers data->hwmon_dev is set.
Timeline
ID reserved
By Linux
Published
- 4 days later
· 4 days 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected f6d0775119fb905fb02eafa98d575cf8ee792d46 – < 31ce62d36d859423dc39f9902f7c4c307b2e00e3
- affected f6d0775119fb905fb02eafa98d575cf8ee792d46 – < 4eed33c7db5c0c573928d28d8a2c003642c679b8
- affected f6d0775119fb905fb02eafa98d575cf8ee792d46 – < 70d9a71aa407044d70b50d356b6decf6659c4d56
- affected f6d0775119fb905fb02eafa98d575cf8ee792d46 – < 075fce376cf852db9293481edce07c181a9b1f46
- affected f6d0775119fb905fb02eafa98d575cf8ee792d46 – < f0b791a006512a48b6348494cb6960598fa99a58
- affected f6d0775119fb905fb02eafa98d575cf8ee792d46 – < aa9429edf9fc0e90d6f4da19ea4b5495a54ab117
- affected 6.0
- unaffected < 6.0
- unaffected 6.1.183 – ≤ 6.1.*
- unaffected 6.6.151 – ≤ 6.6.*
- unaffected 6.12.103 – ≤ 6.12.*
- unaffected 6.18.44 – ≤ 6.18.*
- unaffected 7.1.8 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/31ce62d36d859423dc39f9902f7c4c307b2e00e3 (opens in a new tab)
- https://git.kernel.org/stable/c/4eed33c7db5c0c573928d28d8a2c003642c679b8 (opens in a new tab)
- https://git.kernel.org/stable/c/70d9a71aa407044d70b50d356b6decf6659c4d56 (opens in a new tab)
- https://git.kernel.org/stable/c/075fce376cf852db9293481edce07c181a9b1f46 (opens in a new tab)
- https://git.kernel.org/stable/c/f0b791a006512a48b6348494cb6960598fa99a58 (opens in a new tab)
- https://git.kernel.org/stable/c/aa9429edf9fc0e90d6f4da19ea4b5495a54ab117 (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)
- EUVD EUVD-2026-59617 (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-2026-74552)Record last updated .