CVE-2024-43846

Kernel crash via unchecked hint-based object nesting

Published Aug 17, 2024 · Updated Aug 5, 2026

Denial of service in the Linux kernel objagg library allows local users to crash the kernel through nested hint-based aggregation. The hint-driven path omits the non-nesting check, so a nested delta is treated as a full parent object and later dereferenced with invalid type and lifetime assumptions. Reaching the fault requires CAP_NET_ADMIN, offloaded flower ACL filters on Mellanox Spectrum-2 or newer hardware, and the driver rehash worker; the observed result is a kernel crash.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in the Linux kernel objagg library allows local users to crash the kernel through nested hint-based aggregation. The hint-driven path omits the non-nesting check, so a nested delta is treated as a full parent object and later dereferenced with invalid type and lifetime assumptions. Reaching the fault requires CAP_NET_ADMIN, offloaded flower ACL filters on Mellanox Spectrum-2 or newer hardware, and the driver rehash worker; the observed result is a kernel crash.

The record

CVE
CVE-2024-43846
Published
Aug 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.1
  2. Affected versionversion=9069a3817d82b01b3a55da382c774e3575946130 <1936fa05a180834c3b52e0439a6bddc07814d3eb
  3. Affected versionversion=9069a3817d82b01b3a55da382c774e3575946130 <22ae17a267f4812861f0c644186c3421ff97dbfc
  4. Affected versionversion=9069a3817d82b01b3a55da382c774e3575946130 <499f742fed42e74f1321f4b12ca196a66a2b49fc
  5. Affected versionversion=9069a3817d82b01b3a55da382c774e3575946130 <565213e005557eb6cc4e42189d26eb300e02f170
  6. Affected versionversion=9069a3817d82b01b3a55da382c774e3575946130 <5adc61d29bbb461d7f7c2b48dceaa90ecd182eb7
  7. Affected versionversion=9069a3817d82b01b3a55da382c774e3575946130 <8161263362154cbebfbf4808097b956a6a8cb98a
  8. Affected versionversion=9069a3817d82b01b3a55da382c774e3575946130 <b4a3a89fffcdf09702b1f161b914e52abca1894d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.1; version=9069a3817d82b01b3a55da382c774e3575946130 <1936fa05a180834c3b52e0439a6bddc07814d3eb; version=9069a3817d82b01b3a55da382c774e3575946130 <22ae17a267f4812861f0c644186c3421ff97dbfc; version=9069a3817d82b01b3a55da382c774e3575946130 <499f742fed42e74f1321f4b12ca196a66a2b49fc; version=9069a3817d82b01b3a55da382c774e3575946130 <565213e005557eb6cc4e42189d26eb300e02f170; version=9069a3817d82b01b3a55da382c774e3575946130 <5adc61d29bbb461d7f7c2b48dceaa90ecd182eb7; version=9069a3817d82b01b3a55da382c774e3575946130 <8161263362154cbebfbf4808097b956a6a8cb98a; version=9069a3817d82b01b3a55da382c774e3575946130 <b4a3a89fffcdf09702b1f161b914e52abca1894d

Published CVSS scores

7.8Linux Kernel CVE TeamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo