Medium 5.5Published May 20, 2024

CVE-2024-35988riscv: Fix TASK_SIZE on 64-bit NOMMU

Updated under an hour ago (Oct 27, 2026, 2:10 AM ET)

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Exploited in the last 30 days

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.

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)	6bd33e1ece528f67646db33bf97406b747dafda0 builds before 04bf2e5f95c1a52e28a7567a507f926efe31c3b6; from 6bd33e1ece528f67646db33bf97406b747dafda0 before 52e8a42b11078d2aad4b9ba96503d77c7299168b; from 6bd33e1ece528f67646db33bf97406b747dafda0 before 4201b8c8f2c32af321fb50867e68ac6c1cbed4be; from 6bd33e1ece528f67646db33bf97406b747dafda0 before a0f0dbbb1bc49fa0de18e92c36492ff6d804cdaa; from 6bd33e1ece528f67646db33bf97406b747dafda0 before efdcfa554b6eb228943ef1dd4d023c606be647d2; from 6bd33e1ece528f67646db33bf97406b747dafda0 before 6065e736f82c817c9a597a31ee67f0ce4628e948	CNA record
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 5.5 before 5.10.216; from 5.11 before 5.15.158; from 5.16 before 6.1.90; from 6.2 before 6.6.30; from 6.7 before 6.8.9; 6.9; 6.9; 6.9; and 2 more ranges	NVD
debian debian_linux debian:debian_linux	10.0	NVD

References

References

https://git.kernel.org/stable/c/04bf2e5f95c1a52e28a7567a507f926efe31c3b6	patch
https://git.kernel.org/stable/c/52e8a42b11078d2aad4b9ba96503d77c7299168b	patch
https://git.kernel.org/stable/c/4201b8c8f2c32af321fb50867e68ac6c1cbed4be	patch
https://git.kernel.org/stable/c/a0f0dbbb1bc49fa0de18e92c36492ff6d804cdaa	patch
https://git.kernel.org/stable/c/efdcfa554b6eb228943ef1dd4d023c606be647d2	patch
https://git.kernel.org/stable/c/6065e736f82c817c9a597a31ee67f0ce4628e948	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html	mailing-list, third-party-advisory
https://cert-portal.siemens.com/productcert/html/ssa-265688.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.