CVE-2022-49247

Local service interruption via incorrect buffer-state return

Published Feb 26, 2025 · Updated May 11, 2026

Improper buffer-state handling in the Linux kernel allows local users to interrupt service through a failed stk1160 stream start. The stk1160_start_streaming callback returns queued videobuf2 buffers with VB2_BUF_STATE_ERROR after startup fails, although the framework requires VB2_BUF_STATE_QUEUED. Local access to an stk1160 video device and a stream-start failure are required; the mismatch triggers a vb2_start_streaming kernel warning and disrupts capture.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper buffer-state handling in the Linux kernel allows local users to interrupt service through a failed stk1160 stream start. The stk1160_start_streaming callback returns queued videobuf2 buffers with VB2_BUF_STATE_ERROR after startup fails, although the framework requires VB2_BUF_STATE_QUEUED. Local access to an stk1160 video device and a stream-start failure are required; the mismatch triggers a vb2_start_streaming kernel warning and disrupts capture.

The record

CVE
CVE-2022-49247
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=3.7
  2. Affected versionversion=8ac456495a33d9466076fea94594181ceefb76d9 <03054f22d5abd80ad89547512c2bfbfb2714d3ed
  3. Affected versionversion=8ac456495a33d9466076fea94594181ceefb76d9 <2874122ca4ca74adec72d6d6bf8828228ec20f15
  4. Affected versionversion=8ac456495a33d9466076fea94594181ceefb76d9 <3cc050df73e3d973f1870a8dc0e177e77670bc7f
  5. Affected versionversion=8ac456495a33d9466076fea94594181ceefb76d9 <4d68603cc4382174bc1e7d532e10675c48c6b257
  6. Affected versionversion=8ac456495a33d9466076fea94594181ceefb76d9 <a09e9882800fdfc5aab93f77c3f0132071d2191b
  7. Affected versionversion=8ac456495a33d9466076fea94594181ceefb76d9 <f04a520a422222fc921bf035dc67414c500a286a
  8. Affected versionversion=8ac456495a33d9466076fea94594181ceefb76d9 <f66e6fd1488d26229f11d86616de1b658c70fa8a
  9. Affected versionversion=8ac456495a33d9466076fea94594181ceefb76d9 <fbe04b49a54e31f4321d632270207f0e6304cd16

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.7; version=8ac456495a33d9466076fea94594181ceefb76d9 <03054f22d5abd80ad89547512c2bfbfb2714d3ed; version=8ac456495a33d9466076fea94594181ceefb76d9 <2874122ca4ca74adec72d6d6bf8828228ec20f15; version=8ac456495a33d9466076fea94594181ceefb76d9 <3cc050df73e3d973f1870a8dc0e177e77670bc7f; version=8ac456495a33d9466076fea94594181ceefb76d9 <4d68603cc4382174bc1e7d532e10675c48c6b257; version=8ac456495a33d9466076fea94594181ceefb76d9 <a09e9882800fdfc5aab93f77c3f0132071d2191b; version=8ac456495a33d9466076fea94594181ceefb76d9 <f04a520a422222fc921bf035dc67414c500a286a; version=8ac456495a33d9466076fea94594181ceefb76d9 <f66e6fd1488d26229f11d86616de1b658c70fa8a; version=8ac456495a33d9466076fea94594181ceefb76d9 <fbe04b49a54e31f4321d632270207f0e6304cd16

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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