CVE-2024-35983

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

MEDIUM

5.5

CVSS Score

Published: May 20, 2024 at 09:47 AM UTC

Updated: October 15, 2026 at 01:18 AM UTC

7 products affected across 2 vendorsLinux KernelSIMATIC S7-1500 TM MFPRUGGEDCOM RST2428P Firmware

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

All versions5.10.215 ≤ v < 5.10.2165.15.154 ≤ v < 5.15.1585.4.274 ≤ v < 5.4.2756.1.84 ≤ v < 6.1.906.6.24 ≤ v < 6.6.306.7.12 ≤ v < 6.86.8.3 ≤ v < 6.8.9428ca0000f0abd5c99354c52a36becf2b815ca215.10.215 5.15.154 5.4.274 6.1.84 6.6.24 6.7.12 6.8.383a2275f9d3230c761014b1467888b1ef469be74b2e1b090a590d41abe647eadb6bf2a5dc47b63abb46c822f8b555b9513df44047b0e72c06720df62cf778fff03be1ee88c49b72959650147573c3301d2a7a81088c6abe778b0a93a7eeb79487a943818d6077e0d38b4953c863d0db4a5b3f41d21e0d546f2d5dcb48f7ba9e3ff249d58fc1fa963d374e66a

Vendor states this is fixed in 15aa09d6d84629eb5296de30ac0aa19a33512f16 (fixed)

Vendor states this is fixed in 5af385f5f4cddf908f663974847a4083b2ff2c79 (fixed)

Vendor states this is fixed in 66297b2ceda841f809637731d287bda3a93b49d8 (fixed)

Vendor states this is fixed in 93ba36238db6a74a82feb3dc476e25ea424ad630 (fixed)

Vendor states this is fixed in 9b7c5004d7c5ae062134052a85290869a015814c (fixed)

Vendor states this is fixed in d34a516f2635090d36a306f84573e8de3d7374ce (fixed)

Vendor states this is fixed in ebfe41889b762f1933c6762f6624b9724a25bee0 (fixed)

Affected range stops below 5.10.216, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.15.158, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.4.275, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.1.90, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.6.30, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.8.9, so it looks safe — our inference, not a vendor statement

RUGGEDCOM RST2428P Firmware · Siemens

60%

v < V3.1

Affected range stops below V3.1, so it looks safe — our inference, not a vendor statement

SCALANCE XCH-300 · Siemens

60%

v < V3.1

Affected range stops below V3.1, so it looks safe — our inference, not a vendor statement

SCALANCE XCM-300 · Siemens

60%

v < V3.1

Affected range stops below V3.1, so it looks safe — our inference, not a vendor statement

SCALANCE XRH-300 · Siemens

60%

v < V3.1

Affected range stops below V3.1, so it looks safe — our inference, not a vendor statement

SCALANCE XRM-300 · Siemens

60%

v < V3.1

Affected range stops below V3.1, so it looks safe — our inference, not a vendor statement

SIMATIC S7-1500 TM MFP · Siemens

60%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references