CVE-2022-48786

Local service interruption via vsock list corruption

Published Jul 16, 2024 · Updated Aug 5, 2026

List corruption in Linux kernel vsock allows local users to interrupt service by retrying a connection after a pending signal. When vsock_stream_connect wakes with a pending signal after reaching TCP_ESTABLISHED, it resets socket state without removing the socket from the connected table, so a successful retry inserts the same socket twice. Exploitation requires local low-privileged access and control of the interrupted connection attempt; the double insertion corrupts the kernel's connected-socket list.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

List corruption in Linux kernel vsock allows local users to interrupt service by retrying a connection after a pending signal. When vsock_stream_connect wakes with a pending signal after reaching TCP_ESTABLISHED, it resets socket state without removing the socket from the connected table, so a successful retry inserts the same socket twice. Exploitation requires local low-privileged access and control of the interrupted connection attempt; the double insertion corrupts the kernel's connected-socket list.

The record

CVE
CVE-2022-48786
Published
Jul 16, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 16, 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=3.9
  2. Affected versionversion=d021c344051af91f42c5ba9fdedc176740cbd238 <0bb88f3f7e8d506f3efe46d694964117e20efbfc
  3. Affected versionversion=d021c344051af91f42c5ba9fdedc176740cbd238 <2910bcb9f67551a45397735e47b6d456eb8cd549
  4. Affected versionversion=d021c344051af91f42c5ba9fdedc176740cbd238 <5f326fe2aef411a6575628f92bd861463ea91df7
  5. Affected versionversion=d021c344051af91f42c5ba9fdedc176740cbd238 <787468ee7a435777521d33399d012fd591ae2f94
  6. Affected versionversion=d021c344051af91f42c5ba9fdedc176740cbd238 <87cd1bbd6677411e17369cd4b7389ab1e1fdba44
  7. Affected versionversion=d021c344051af91f42c5ba9fdedc176740cbd238 <addd62a8cb6fa90aa322365c62487da61f6baab8
  8. Affected versionversion=d021c344051af91f42c5ba9fdedc176740cbd238 <b9208492fcaecff8f43915529ae34b3bcb03877c
  9. Affected versionversion=d021c344051af91f42c5ba9fdedc176740cbd238 <e3b3939fd137aab6d00d54bee0ee9244b286a608

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.9; version=d021c344051af91f42c5ba9fdedc176740cbd238 <0bb88f3f7e8d506f3efe46d694964117e20efbfc; version=d021c344051af91f42c5ba9fdedc176740cbd238 <2910bcb9f67551a45397735e47b6d456eb8cd549; version=d021c344051af91f42c5ba9fdedc176740cbd238 <5f326fe2aef411a6575628f92bd861463ea91df7; version=d021c344051af91f42c5ba9fdedc176740cbd238 <787468ee7a435777521d33399d012fd591ae2f94; version=d021c344051af91f42c5ba9fdedc176740cbd238 <87cd1bbd6677411e17369cd4b7389ab1e1fdba44; version=d021c344051af91f42c5ba9fdedc176740cbd238 <addd62a8cb6fa90aa322365c62487da61f6baab8; version=d021c344051af91f42c5ba9fdedc176740cbd238 <b9208492fcaecff8f43915529ae34b3bcb03877c; version=d021c344051af91f42c5ba9fdedc176740cbd238 <e3b3939fd137aab6d00d54bee0ee9244b286a608

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

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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

T1499Endpoint Denial of Service

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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