CVE-2024-26582

Memory corruption via unreferenced TLS receive pages

Published Feb 21, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel TLS receive path allows local users to trigger unsafe memory access during asynchronous decryption. The tls_decrypt_sg function fails to retain references to clear_skb pages, so tls_decrypt_done releases them before process_rx_list reads a partially consumed socket buffer. Reachability requires kernel TLS receive processing, a partial read, and asynchronous decryption; published assessments bound the result to kernel confidentiality, integrity, and availability impact.

CVSS severity7.8
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel TLS receive path allows local users to trigger unsafe memory access during asynchronous decryption. The tls_decrypt_sg function fails to retain references to clear_skb pages, so tls_decrypt_done releases them before process_rx_list reads a partially consumed socket buffer. Reachability requires kernel TLS receive processing, a partial read, and asynchronous decryption; published assessments bound the result to kernel confidentiality, integrity, and availability impact.

The record

CVE
CVE-2024-26582
Published
Feb 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 21, 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=6.0
  2. Affected versionversion=fd31f3996af2627106e22a9f8072764fede51161 <20b4ed034872b4d024b26e2bc1092c3f80e5db96
  3. Affected versionversion=fd31f3996af2627106e22a9f8072764fede51161 <32b55c5ff9103b8508c1e04bfa5a08c64e7a925f
  4. Affected versionversion=fd31f3996af2627106e22a9f8072764fede51161 <754c9bab77a1b895b97bd99d754403c505bc79df
  5. Affected versionversion=fd31f3996af2627106e22a9f8072764fede51161 <d684763534b969cca1022e2a28645c7cc91f7fa5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0; version=fd31f3996af2627106e22a9f8072764fede51161 <20b4ed034872b4d024b26e2bc1092c3f80e5db96; version=fd31f3996af2627106e22a9f8072764fede51161 <32b55c5ff9103b8508c1e04bfa5a08c64e7a925f; version=fd31f3996af2627106e22a9f8072764fede51161 <754c9bab77a1b895b97bd99d754403c505bc79df; version=fd31f3996af2627106e22a9f8072764fede51161 <d684763534b969cca1022e2a28645c7cc91f7fa5

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.8Linux Kernel CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.8Oracle LinuxCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/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-416Use After Free

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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