CVE-2024-35873

Application crash via corrupted vector state

Published May 19, 2024 · Updated May 11, 2026

Vector-state corruption in RISC-V Linux 6.8 through 6.8.4 allows local users to crash a vectorized application after a signal return. The rt_sigreturn() path invokes vectorized user_from_copy() while live vector state remains dirty, causing stale live state to overwrite task state restored from sigcontext. Triggering requires RISC-V vector execution, a signal-handler return, and a vector length above 128 bits under the default copy threshold.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Vector-state corruption in RISC-V Linux 6.8 through 6.8.4 allows local users to crash a vectorized application after a signal return. The rt_sigreturn() path invokes vectorized user_from_copy() while live vector state remains dirty, causing stale live state to overwrite task state restored from sigcontext. Triggering requires RISC-V vector execution, a signal-handler return, and a vector length above 128 bits under the default copy threshold.

The record

CVE
CVE-2024-35873
Published
May 19, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 19, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.8
  2. Affected versionversion=c2a658d419246108c9bf065ec347355de5ba8a05 <5b16d904e910183181b9d90efa957c787a8ac91b
  3. Affected versionversion=c2a658d419246108c9bf065ec347355de5ba8a05 <c27fa53b858b4ee6552a719aa599c250cf98a586

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.8; version=c2a658d419246108c9bf065ec347355de5ba8a05 <5b16d904e910183181b9d90efa957c787a8ac91b; version=c2a658d419246108c9bf065ec347355de5ba8a05 <c27fa53b858b4ee6552a719aa599c250cf98a586

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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