CVE-2024-27073

Kernel compromise via ttpci attach cleanup failures

Published May 1, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel ttpci driver allows local users with DVB device access to compromise or crash the kernel. On saa7146_register_device or saa7146_vv_init failure, budget_av_attach returns without releasing allocations and registrations, leaving stale DVB nodes backed by freed device state. Exploitation requires a system carrying a ttpci PCI card, an attach failure, and local access to the resulting DVB character devices; feed operations can disclose kernel memory, redirect writes, or panic the host.

CVSS severity7.8
High
EPSS probability0.29%
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 ttpci driver allows local users with DVB device access to compromise or crash the kernel. On saa7146_register_device or saa7146_vv_init failure, budget_av_attach returns without releasing allocations and registrations, leaving stale DVB nodes backed by freed device state. Exploitation requires a system carrying a ttpci PCI card, an attach failure, and local access to the resulting DVB character devices; feed operations can disclose kernel memory, redirect writes, or panic the host.

The record

CVE
CVE-2024-27073
Published
May 1, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1597cd1a88cfcdc4bf8b1b44cd458fed9a5a5d63
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <24e51d6eb578b82ff292927f14b9f5ec05a46beb
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <55ca0c7eae8499bb96f4e5d9b26af95e89c4e6a0
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <656b8cc123d7635dd399d9f02594f27aa797ac3c
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7393c681f9aa05ffe2385e8716989565eed2fe06
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <910363473e4bf97da3c350e08d915546dd6cc30b
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <af37aed04997e644f7e1b52b696b62dcae3cc016
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d0b07f712bf61e1a3cf23c87c663791c42e50837
  9. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1597cd1a88cfcdc4bf8b1b44cd458fed9a5a5d63; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <24e51d6eb578b82ff292927f14b9f5ec05a46beb; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <55ca0c7eae8499bb96f4e5d9b26af95e89c4e6a0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <656b8cc123d7635dd399d9f02594f27aa797ac3c; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7393c681f9aa05ffe2385e8716989565eed2fe06; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <910363473e4bf97da3c350e08d915546dd6cc30b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <af37aed04997e644f7e1b52b696b62dcae3cc016; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d0b07f712bf61e1a3cf23c87c663791c42e50837; version=2.6.12

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5CISA-ADPCVSS: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-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service
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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