Medium 5.5Published May 20, 2024

CVE-2024-35983bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS

Updated under an hour ago (Oct 27, 2026, 8:50 AM ET)

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It affects Linux and 5 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS bits_per() rounds up to the next power of two when passed a power of two. This causes crashes on some machines and configurations.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from d6077e0d38b4953c863d0db4a5b3f41d21e0d546 before d34a516f2635090d36a306f84573e8de3d7374ce; from 83a2275f9d3230c761014b1467888b1ef469be74 before 66297b2ceda841f809637731d287bda3a93b49d8; from d2a7a81088c6abe778b0a93a7eeb79487a943818 before 93ba36238db6a74a82feb3dc476e25ea424ad630; 428ca0000f0abd5c99354c52a36becf2b815ca21 builds before 9b7c5004d7c5ae062134052a85290869a015814c; from b46c822f8b555b9513df44047b0e72c06720df62 before 15aa09d6d84629eb5296de30ac0aa19a33512f16; from cf778fff03be1ee88c49b72959650147573c3301 before ebfe41889b762f1933c6762f6624b9724a25bee0; from f2d5dcb48f7ba9e3ff249d58fc1fa963d374e66a before 5af385f5f4cddf908f663974847a4083b2ff2c79; b2e1b090a590d41abe647eadb6bf2a5dc47b63ab; and 1 more ranges	CNA record
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.1	CISA ADP
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name)	all versions not affected	CISA ADP
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name)	before V3.1	CISA ADP
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.4.274 before 5.4.275; from 5.10.215 before 5.10.216; from 5.15.154 before 5.15.158; from 6.1.84 before 6.1.90; from 6.6.24 before 6.6.30; from 6.7.12 before 6.8; from 6.8.3 before 6.8.9	NVD

References

References

https://git.kernel.org/stable/c/d34a516f2635090d36a306f84573e8de3d7374ce	patch
https://git.kernel.org/stable/c/66297b2ceda841f809637731d287bda3a93b49d8	patch
https://git.kernel.org/stable/c/93ba36238db6a74a82feb3dc476e25ea424ad630	patch
https://git.kernel.org/stable/c/9b7c5004d7c5ae062134052a85290869a015814c	patch
https://git.kernel.org/stable/c/15aa09d6d84629eb5296de30ac0aa19a33512f16	patch
https://git.kernel.org/stable/c/ebfe41889b762f1933c6762f6624b9724a25bee0	patch
https://git.kernel.org/stable/c/5af385f5f4cddf908f663974847a4083b2ff2c79	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html	patch
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
https://cert-portal.siemens.com/productcert/html/ssa-613116.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.