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CVE Record

CVE-2024-26582: net: tls: fix use-after-free with partial reads and async decrypt

In the Linux kernel, the following vulnerability has been resolved: net: tls: fix use-after-free with partial reads and async decrypt tls_decrypt_sg doesn't take a reference on the pages from clear_skb, so the put_page() in tls_decrypt_done releases them, and we trigger a use-after-free in process_rx_list when we try to read from the partially-read skb.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2024-26582 is a Linux kernel flaw in kernel TLS handling. Under specific partial-read and asynchronous decryption conditions, the kernel may access memory after it has been freed. That can cause instability and may have security impact, but the public record does not provide a CVSS score or confirmed exploitation.

Executive priority

Treat as a scheduled kernel remediation item, elevated for Linux systems supporting sensitive or high-availability TLS workloads. There is no sourced evidence of active exploitation, so emergency response is not indicated from the provided record alone.

Technical view

The bug is a use-after-free in Linux kernel net/tls. tls_decrypt_sg does not retain page references from clear_skb; tls_decrypt_done releases them, and process_rx_list later reads from a partially read skb. The issue is fixed in referenced Linux stable commits.

Likely exposure

Exposure is most likely on Linux systems running affected kernel versions with kernel TLS paths in use, especially receive-side TLS with asynchronous decrypt and partial reads. Systems not using kTLS are less likely to be practically exposed, but kernel version should still drive remediation.

Exploitation context

No CISA KEV listing is provided, and the supplied sources do not report active exploitation. Public details describe the faulty memory lifecycle but do not establish exploitability for privilege escalation, remote code execution, or denial of service.

Researcher notes

The key condition is page lifetime handling during partial reads with async decrypt in net/tls. The public record names the bug and fix commits but lacks CVSS, CWE, exploit status, and detailed affected-range clarity. Validate against upstream stable and distribution-specific kernel metadata.

Mitigation direction

  • Update Linux kernels using vendor-supported packages or the referenced stable fixes.
  • Prioritize internet-facing and high-availability Linux workloads that may use kernel TLS.
  • Review Fedora or other distribution advisories for packaged kernel updates.
  • If patch timing is unclear, follow your Linux vendor’s guidance.

Validation and detection

  • Inventory Linux kernel versions across servers, containers hosts, appliances, and cloud images.
  • Compare installed kernels against vendor advisories and the referenced stable commits.
  • Identify workloads or services that enable kernel TLS features.
  • Confirm systems rebooted into the remediated kernel after update.
  • Monitor kernel logs for TLS or memory-corruption related crashes.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2024-26582 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
2ADP providers
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxfd31f3996af2627106e22a9f8072764fede51161, fd31f3996af2627106e22a9f8072764fede51161, fd31f3996af2627106e22a9f8072764fede51161, fd31f3996af2627106e22a9f8072764fede51161unaffected
LinuxLinux6.0, 0, 6.1.79, 6.6.18, 6.7.6, 6.8affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.