CVE-2022-50580

Availability loss via block-throttle wait calculation overflow

Published Oct 22, 2025 · Updated Oct 22, 2025

Integer overflow in Linux kernel block I/O throttling allows local users to cause unspecified impact via local vectors. The tg_with_in_bps_limit() function multiplies bps_limit by rounded elapsed jiffies in 64 bits before division, allowing the intermediate value and calculated byte allowance to wrap. The vulnerable path is reached when block I/O bandwidth throttling evaluates a bio; published material describes no demonstrated exploit or more specific operational consequence.

CVSS severity6.1
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Linux kernel block I/O throttling allows local users to cause unspecified impact via local vectors. The tg_with_in_bps_limit() function multiplies bps_limit by rounded elapsed jiffies in 64 bits before division, allowing the intermediate value and calculated byte allowance to wrap. The vulnerable path is reached when block I/O bandwidth throttling evaluates a bio; published material describes no demonstrated exploit or more specific operational consequence.

The record

CVE
CVE-2022-50580
Published
Oct 22, 2025
Updated
Oct 22, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2025Record 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 <19c010ae44f0ce52b5436080492a61a092ee0cf4
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <70b2adb1d698fbc63d3b3848c452524dc15872c5
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8d6bbaada2e0a65f9012ac4c2506460160e7237a
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ca67b0563b39e79290c23e509319c178b9ca9104
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cc6f0855bf8d9b729df28ff443ced7350c380dbd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <19c010ae44f0ce52b5436080492a61a092ee0cf4; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <70b2adb1d698fbc63d3b3848c452524dc15872c5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8d6bbaada2e0a65f9012ac4c2506460160e7237a; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ca67b0563b39e79290c23e509319c178b9ca9104; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cc6f0855bf8d9b729df28ff443ced7350c380dbd

Published CVSS scores

6.9SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
6.1SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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