CVE-2024-35988

riscv: Fix TASK_SIZE on 64-bit NOMMU

MEDIUM

5.5

CVSS Score

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

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

3 products affected across 3 vendorsLinux KernelDebian LinuxSIMATIC S7-1500 TM MFP

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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: riscv: Fix TASK_SIZE on 64-bit NOMMU On NOMMU, userspace memory can come from anywhere in physical RAM. The current definition of TASK_SIZE is wrong if any RAM exists above 4G, causing spurious failures in the userspace access routines.

Affected

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

Debian Linux · Debiandrupal

95%

10.0

Linux Kernel · Linux

95%

5.11 ≤ v < 5.15.1585.16 ≤ v < 6.1.905.5 ≤ v < 5.10.2166.2 ≤ v < 6.6.306.7 ≤ v < 6.8.95.5 6.9 6.9 rc1 6.9 rc2 6.9 rc3 6.9 rc4 6.9 rc56bd33e1ece528f67646db33bf97406b747dafda0

Vendor states this is fixed in 04bf2e5f95c1a52e28a7567a507f926efe31c3b6 (fixed)

Vendor states this is fixed in 4201b8c8f2c32af321fb50867e68ac6c1cbed4be (fixed)

Vendor states this is fixed in 52e8a42b11078d2aad4b9ba96503d77c7299168b (fixed)

Vendor states this is fixed in 6065e736f82c817c9a597a31ee67f0ce4628e948 (fixed)

Vendor states this is fixed in a0f0dbbb1bc49fa0de18e92c36492ff6d804cdaa (fixed)

Vendor states this is fixed in efdcfa554b6eb228943ef1dd4d023c606be647d2 (fixed)

Vendor states this is fixed in 5.10.216 (unaffected)

Vendor states this is fixed in 5.15.158 (unaffected)

Vendor states this is fixed in 5.5 (unaffected)

Vendor states this is fixed in 6.1.90 (unaffected)

Vendor states this is fixed in 6.6.30 (unaffected)

Vendor states this is fixed in 6.8.9 (unaffected)