CVE-2024-41048

Kernel panic via zero-length sockmap TCP FIN

Published Jul 29, 2024 · Updated Aug 5, 2026

NULL pointer dereference in Linux 4.20 and later allows local users to trigger a kernel panic through a zero-length sockmap TCP FIN packet. sk_psock_skb_ingress_enqueue queues an empty scatter-gather entry, and sk_msg_recvmsg passes its NULL page through copy_page_to_iter to page_address. The documented panic requires the sockmap path and occurs on LoongArch because page_address(NULL) faults there, while the same defect remained hidden on x86.

CVSS severity5.5
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux 4.20 and later allows local users to trigger a kernel panic through a zero-length sockmap TCP FIN packet. sk_psock_skb_ingress_enqueue queues an empty scatter-gather entry, and sk_msg_recvmsg passes its NULL page through copy_page_to_iter to page_address. The documented panic requires the sockmap path and occurs on LoongArch because page_address(NULL) faults there, while the same defect remained hidden on x86.

The record

CVE
CVE-2024-41048
Published
Jul 29, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 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

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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=4.20
  2. Affected versionversion=604326b41a6fb9b4a78b6179335decee0365cd8c <195b7bcdfc5adc5b2468f279dd9eb7eebd2e7632
  3. Affected versionversion=604326b41a6fb9b4a78b6179335decee0365cd8c <b180739b45a38b4caa88fe16bb5273072e6613dc
  4. Affected versionversion=604326b41a6fb9b4a78b6179335decee0365cd8c <f0c18025693707ec344a70b6887f7450bf4c826b
  5. Affected versionversion=604326b41a6fb9b4a78b6179335decee0365cd8c <f8bd689f37f4198a4c61c4684f591ba639595b97
  6. Affected versionversion=604326b41a6fb9b4a78b6179335decee0365cd8c <fb61d7b9fb6ef0032de469499a54dab4c7260d0d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.20; version=604326b41a6fb9b4a78b6179335decee0365cd8c <195b7bcdfc5adc5b2468f279dd9eb7eebd2e7632; version=604326b41a6fb9b4a78b6179335decee0365cd8c <b180739b45a38b4caa88fe16bb5273072e6613dc; version=604326b41a6fb9b4a78b6179335decee0365cd8c <f0c18025693707ec344a70b6887f7450bf4c826b; version=604326b41a6fb9b4a78b6179335decee0365cd8c <f8bd689f37f4198a4c61c4684f591ba639595b97; version=604326b41a6fb9b4a78b6179335decee0365cd8c <fb61d7b9fb6ef0032de469499a54dab4c7260d0d

Published CVSS scores

5.5NIST NVDCVSS: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 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.

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Technologies

Your stack

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Your stack

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