CVE-2024-26824

Kernel memory corruption via uninitialized SGL free

Published Apr 17, 2024 · Updated Aug 5, 2026

Memory corruption in the Linux kernel allows local users to alter kernel state by triggering an AF_ALG hash-socket error path. The zero-length path in hash_sendmsg reaches cleanup after hash_alloc_result fails, causing an uninitialized scatter-gather list pointer to be freed. Any unprivileged local user can force allocation failure by exhausting socket optmem; the arbitrary free can disclose or modify kernel memory or panic the system.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in the Linux kernel allows local users to alter kernel state by triggering an AF_ALG hash-socket error path. The zero-length path in hash_sendmsg reaches cleanup after hash_alloc_result fails, causing an uninitialized scatter-gather list pointer to be freed. Any unprivileged local user can force allocation failure by exhausting socket optmem; the arbitrary free can disclose or modify kernel memory or panic the system.

The record

CVE
CVE-2024-26824
Published
Apr 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 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=6.5
  2. Affected versionversion=b6d972f6898308fbe7e693bf8d44ebfdb1cd2dc4 <24c890dd712f6345e382256cae8c97abb0406b70
  3. Affected versionversion=b6d972f6898308fbe7e693bf8d44ebfdb1cd2dc4 <775f3c1882a493168e08fdb8cde0865c8f3a8a29
  4. Affected versionversion=b6d972f6898308fbe7e693bf8d44ebfdb1cd2dc4 <9c82920359b7c1eddaf72069bcfe0ffddf088cd0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.5; version=b6d972f6898308fbe7e693bf8d44ebfdb1cd2dc4 <24c890dd712f6345e382256cae8c97abb0406b70; version=b6d972f6898308fbe7e693bf8d44ebfdb1cd2dc4 <775f3c1882a493168e08fdb8cde0865c8f3a8a29; version=b6d972f6898308fbe7e693bf8d44ebfdb1cd2dc4 <9c82920359b7c1eddaf72069bcfe0ffddf088cd0

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.

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

T1068Exploitation for Privilege Escalation

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

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Your stack

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