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CVE-2024-46759: hwmon: (adc128d818) Fix underflows seen when writing limit attributes

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-09-18 · updated 2026-10-15
• Weakness: CWE-191

Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: (adc128d818) Fix underflows seen when writing limit attributes DIV_ROUND_CLOSEST() after kstrtol() results in an underflow if a large negative number such as -9223372036854775808 is provided by the user. Fix it by reordering clamp_val() and DIV_ROUND_CLOSEST() operations.

Affected products

• Linux kernel: before 4.19.322; from 4.20 before 5.4.284; from 5.5 before 5.10.226; from 5.11 before 5.15.167; from 5.16 before 6.1.110; from 6.2 before 6.6.51 — fixed in 4.19.322, 5.10.226, 5.15.167, 5.4.284, 6.1.110, 6.10.10

How to fix

Upgrade to a fixed version: Linux kernel 4.19.322, 5.10.226, 5.15.167, 5.4.284. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/019ef2d396363ecddc46e826153a842f8603799b
• https://git.kernel.org/stable/c/05419d0056dcf7088687e561bb583cc06deba777
• https://git.kernel.org/stable/c/2a3add62f183459a057336381ef3a896da01ce38
• https://git.kernel.org/stable/c/6891b11a0c6227ca7ed15786928a07b1c0e4d4af
• https://git.kernel.org/stable/c/7645d783df23878342d5d8d22030c3861d2d5426
• https://git.kernel.org/stable/c/8cad724c8537fe3e0da8004646abc00290adae40
• https://git.kernel.org/stable/c/b0bdb43852bf7f55ba02f0cbf00b4ea7ca897bff
• https://git.kernel.org/stable/c/f7f5101af5b47a331cdbfa42ba64c507b47dd1fe
• https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
• https://cert-portal.siemens.com/productcert/html/ssa-265688.html
• https://cert-portal.siemens.com/productcert/html/ssa-355557.html

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