CVE-2024-39506

System crash via unchecked liquidio page pointer

Published Jul 12, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux liquidio driver allows local users to crash the system during received-packet processing. lio_vf_rep_copy_packet checks pg_info->page for NULL but passes it unconditionally to skb_add_rx_frag, where a null page dereference faults the kernel. Reachability requires the liquidio VF representor receive path on compatible Cavium hardware; the published analysis found no path that sets the pointer to NULL, leaving practical triggering unverified.

CVSS severity5.5
Medium
EPSS probability0.29%
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

NULL pointer dereference in the Linux liquidio driver allows local users to crash the system during received-packet processing. lio_vf_rep_copy_packet checks pg_info->page for NULL but passes it unconditionally to skb_add_rx_frag, where a null page dereference faults the kernel. Reachability requires the liquidio VF representor receive path on compatible Cavium hardware; the published analysis found no path that sets the pointer to NULL, leaving practical triggering unverified.

The record

CVE
CVE-2024-39506
Published
Jul 12, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 12, 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

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=1f233f327913f3dee0602cba9c64df1903772b55 <87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2
  2. Affected versionversion=1f233f327913f3dee0602cba9c64df1903772b55 <a6f4d0ec170a46b5f453cacf55dff5989b42bbfa
  3. Affected versionversion=1f233f327913f3dee0602cba9c64df1903772b55 <a86490a3712cc513113440a606a0e77130abd47c
  4. Affected versionversion=1f233f327913f3dee0602cba9c64df1903772b55 <c44711b78608c98a3e6b49ce91678cd0917d5349
  5. Affected versionversion=1f233f327913f3dee0602cba9c64df1903772b55 <cbf18d8128a753cb632bef39470d19befd9c7347
  6. Affected versionversion=1f233f327913f3dee0602cba9c64df1903772b55 <dcc7440f32c7a26b067aff6e7d931ec593024a79
  7. Affected versionversion=1f233f327913f3dee0602cba9c64df1903772b55 <f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25ee
  8. Affected versionversion=1f233f327913f3dee0602cba9c64df1903772b55 <fd2b613bc4c508e55c1221c6595bb889812a4fea
  9. Affected versionversion=4.15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1f233f327913f3dee0602cba9c64df1903772b55 <87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2; version=1f233f327913f3dee0602cba9c64df1903772b55 <a6f4d0ec170a46b5f453cacf55dff5989b42bbfa; version=1f233f327913f3dee0602cba9c64df1903772b55 <a86490a3712cc513113440a606a0e77130abd47c; version=1f233f327913f3dee0602cba9c64df1903772b55 <c44711b78608c98a3e6b49ce91678cd0917d5349; version=1f233f327913f3dee0602cba9c64df1903772b55 <cbf18d8128a753cb632bef39470d19befd9c7347; version=1f233f327913f3dee0602cba9c64df1903772b55 <dcc7440f32c7a26b067aff6e7d931ec593024a79; version=1f233f327913f3dee0602cba9c64df1903772b55 <f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25ee; version=1f233f327913f3dee0602cba9c64df1903772b55 <fd2b613bc4c508e55c1221c6595bb889812a4fea; version=4.15

Published CVSS scores

5.5NISTCVSS: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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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