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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 04bf2e5f95c1a52e28a7567a507f926efe31c3b6, 4201b8c8f2c32af321fb50867e68ac6c1cbed4be, 52e8a42b11078d2aad4b9ba96503d77c7299168b.

Low priority for now. Upgrade to Linux Linux 04bf2e5f95c1a52e28a7567a507f926efe31c3b6, 4201b8c8f2c32af321fb50867e68ac6c1cbed4be, 52e8a42b11078d2aad4b9ba96503d77c7299168b or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 20, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-35988

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux10.0
  • linux linux kernel5.11 and later · before 5.15.158
  • linux linux kernel5.16 and later · before 6.1.90
  • linux linux kernel5.5 and later · before 5.10.216
  • linux linux kernel6.7 and later · before 6.8.9
  • linux linux kernel6.2 and later · before 6.6.30
  • linux linux kernel6.9

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.5affected
    • 6bd33e1ece528f67646db33bf97406b747dafda0 and later · before 04bf2e5f95c1a52e28a7567a507f926efe31c3b6affected · git
    • 6bd33e1ece528f67646db33bf97406b747dafda0 and later · before 52e8a42b11078d2aad4b9ba96503d77c7299168baffected · git
    • 6bd33e1ece528f67646db33bf97406b747dafda0 and later · before 4201b8c8f2c32af321fb50867e68ac6c1cbed4beaffected · git
    • 6bd33e1ece528f67646db33bf97406b747dafda0 and later · before a0f0dbbb1bc49fa0de18e92c36492ff6d804cdaaaffected · git
    • 6bd33e1ece528f67646db33bf97406b747dafda0 and later · before efdcfa554b6eb228943ef1dd4d023c606be647d2affected · git
    • 6bd33e1ece528f67646db33bf97406b747dafda0 and later · before 6065e736f82c817c9a597a31ee67f0ce4628e948affected · git
    • before 5.5not affected · semver
    • 5.10.216 and later · up to and including 5.10.*not affected · semver
    • 5.15.158 and later · up to and including 5.15.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.90-16.1.90-1
Debian:13linuxbefore 6.8.9-16.8.9-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-35983May 20, 2024 · bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS
    22Monitor
  • ← EarlierCVE-2024-35984May 20, 2024 · i2c: smbus: fix NULL function pointer dereference
    22Monitor
  • Later →CVE-2024-35990May 20, 2024 · dma: xilinx_dpdma: Fix locking
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux04bf2e5f95c1a52e28a7567a507f926efe31c3b6Vendor (CNA)
Linux Linux4201b8c8f2c32af321fb50867e68ac6c1cbed4beVendor (CNA)
Linux Linux52e8a42b11078d2aad4b9ba96503d77c7299168bVendor (CNA)
Linux Linux6065e736f82c817c9a597a31ee67f0ce4628e948Vendor (CNA)
Linux Linuxa0f0dbbb1bc49fa0de18e92c36492ff6d804cdaaVendor (CNA)
Linux Linuxefdcfa554b6eb228943ef1dd4d023c606be647d2Vendor (CNA)
debian:linux6.1.90-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records