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

Summary

CVECVE-2024-35983
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-20 10:15:12 UTC
Updated2026-05-12 12:16:45 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected d6077e0d38b4953c863d0db4a5b3f41d21e0d546 d34a516f2635090d36a306f84573e8de3d7374ce git Not specified
CNA Linux Linux affected 83a2275f9d3230c761014b1467888b1ef469be74 66297b2ceda841f809637731d287bda3a93b49d8 git Not specified
CNA Linux Linux affected d2a7a81088c6abe778b0a93a7eeb79487a943818 93ba36238db6a74a82feb3dc476e25ea424ad630 git Not specified
CNA Linux Linux affected 428ca0000f0abd5c99354c52a36becf2b815ca21 9b7c5004d7c5ae062134052a85290869a015814c git Not specified
CNA Linux Linux affected b46c822f8b555b9513df44047b0e72c06720df62 15aa09d6d84629eb5296de30ac0aa19a33512f16 git Not specified
CNA Linux Linux affected cf778fff03be1ee88c49b72959650147573c3301 ebfe41889b762f1933c6762f6624b9724a25bee0 git Not specified
CNA Linux Linux affected f2d5dcb48f7ba9e3ff249d58fc1fa963d374e66a 5af385f5f4cddf908f663974847a4083b2ff2c79 git Not specified
CNA Linux Linux affected b2e1b090a590d41abe647eadb6bf2a5dc47b63ab git Not specified
CNA Linux Linux affected 5.4.274 5.4.275 semver Not specified
CNA Linux Linux affected 5.10.215 5.10.216 semver Not specified
CNA Linux Linux affected 5.15.154 5.15.158 semver Not specified
CNA Linux Linux affected 6.1.84 6.1.90 semver Not specified
CNA Linux Linux affected 6.6.24 6.6.30 semver Not specified
CNA Linux Linux affected 6.8.3 6.8.9 semver Not specified
ADP Siemens RUGGEDCOM RST2428P affected V3.1 custom Not specified
ADP Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 Family unaffected * custom Not specified
ADP Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 Family affected V3.1 custom Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Patch
git.kernel.org/stable/c/93ba36238db6a74a82feb3dc476e25ea424ad630 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/9b7c5004d7c5ae062134052a85290869a015814c af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/ebfe41889b762f1933c6762f6624b9724a25bee0 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/15aa09d6d84629eb5296de30ac0aa19a33512f16 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/66297b2ceda841f809637731d287bda3a93b49d8 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-613116.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/5af385f5f4cddf908f663974847a4083b2ff2c79 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/d34a516f2635090d36a306f84573e8de3d7374ce af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
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