CVE-2026-74685hwmon: (ltc4282) Clamp negative current limits
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 94% 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: (ltc4282) Clamp negative current limits When a negative value is passed to ltc4282_write_curr(), the signed long val is cast directly to u64: drivers/hwmon/ltc4282.c:ltc4282_write_curr() { /* need to pass it in millivolt */ u32 in = DIV_ROUND_CLOSEST_ULL((u64)val * st->rsense, DECA * MICRO); ... } This cast converts negative inputs into large positive values. The subsequent division result overflows the u32 in variable, truncating to a pseudo-random positive value. When this is passed to ltc4282_write_voltage_byte(), it is clamped to the maximum limit instead of zero. Clamp val to 0 and to the maximum supported upper limit before the cast and assign the result to a 64-bit temporary variable before the division to avoid the underflow and an also possible overflow.
Timeline
ID reserved
By Linux
- 7 days later
· 7 days later
Published
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 94% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 – < 60e06c4dba696173982393252a40ceb7dd2eec18
- affected cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 – < de58b90a4d1417c15b693eb04c0ce6bc925d84c6
- affected cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 – < 046e56b53c09375ef39903514496aa5508db9729
- affected cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 – < e253dd5f9f6d875a317895bf43ec9534ed7523cb
- affected 6.9
- unaffected < 6.9
- unaffected 6.12.104 – ≤ 6.12.*
- unaffected 6.18.45 – ≤ 6.18.*
- unaffected 7.1.9 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References4
- https://git.kernel.org/stable/c/60e06c4dba696173982393252a40ceb7dd2eec18 (opens in a new tab)
- https://git.kernel.org/stable/c/de58b90a4d1417c15b693eb04c0ce6bc925d84c6 (opens in a new tab)
- https://git.kernel.org/stable/c/046e56b53c09375ef39903514496aa5508db9729 (opens in a new tab)
- https://git.kernel.org/stable/c/e253dd5f9f6d875a317895bf43ec9534ed7523cb (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-2026-64372 (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-2026-74685)Record last updated .