CVE-2022-48948

Kernel memory corruption via oversized UVC transfer

Published Oct 21, 2024 · Updated May 11, 2026

Buffer overflow in affected Linux kernel versions allows local users to overwrite four bytes via a crafted UVC OUT control transfer. The uvc_function_setup data-stage handler copies req->actual bytes into the 60-byte uvc_event->data.data array even though setup accepts payloads up to 64 bytes. Reachability requires the USB gadget UVC function and the ability to submit an OUT control request; the documented result is a four-byte kernel-memory overwrite.

CVSS severity7.8
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in affected Linux kernel versions allows local users to overwrite four bytes via a crafted UVC OUT control transfer. The uvc_function_setup data-stage handler copies req->actual bytes into the 60-byte uvc_event->data.data array even though setup accepts payloads up to 64 bytes. Reachability requires the USB gadget UVC function and the ability to submit an OUT control request; the documented result is a four-byte kernel-memory overwrite.

The record

CVE
CVE-2022-48948
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-120
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE 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=2.6.35
  2. Affected versionversion=cdda479f15cd13fa50a913ca85129c0437cc7b91 <06fd17ee92c8f1704c7e54ec0fd50ae0542a49a5
  3. Affected versionversion=cdda479f15cd13fa50a913ca85129c0437cc7b91 <4972e3528b968665b596b5434764ff8fd9446d35
  4. Affected versionversion=cdda479f15cd13fa50a913ca85129c0437cc7b91 <4c92670b16727365699fe4b19ed32013bab2c107
  5. Affected versionversion=cdda479f15cd13fa50a913ca85129c0437cc7b91 <6b41a35b41f77821db24f2d8f66794b390a585c5
  6. Affected versionversion=cdda479f15cd13fa50a913ca85129c0437cc7b91 <7b1f773277a72f9756d47a41b94e43506cce1954
  7. Affected versionversion=cdda479f15cd13fa50a913ca85129c0437cc7b91 <b8fb1cba934ea122b50f13a4f9d6fc4fdc43d2be
  8. Affected versionversion=cdda479f15cd13fa50a913ca85129c0437cc7b91 <bc8380fe5768c564f921f7b4eaba932e330b9e4b
  9. Affected versionversion=cdda479f15cd13fa50a913ca85129c0437cc7b91 <c79538f32df12887f110dcd6b9c825b482905f24
  10. Affected versionversion=cdda479f15cd13fa50a913ca85129c0437cc7b91 <d1a92bb8d697f170d93fe922da763d7d156b8841

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.35; version=cdda479f15cd13fa50a913ca85129c0437cc7b91 <06fd17ee92c8f1704c7e54ec0fd50ae0542a49a5; version=cdda479f15cd13fa50a913ca85129c0437cc7b91 <4972e3528b968665b596b5434764ff8fd9446d35; version=cdda479f15cd13fa50a913ca85129c0437cc7b91 <4c92670b16727365699fe4b19ed32013bab2c107; version=cdda479f15cd13fa50a913ca85129c0437cc7b91 <6b41a35b41f77821db24f2d8f66794b390a585c5; version=cdda479f15cd13fa50a913ca85129c0437cc7b91 <7b1f773277a72f9756d47a41b94e43506cce1954; version=cdda479f15cd13fa50a913ca85129c0437cc7b91 <b8fb1cba934ea122b50f13a4f9d6fc4fdc43d2be; version=cdda479f15cd13fa50a913ca85129c0437cc7b91 <bc8380fe5768c564f921f7b4eaba932e330b9e4b; version=cdda479f15cd13fa50a913ca85129c0437cc7b91 <c79538f32df12887f110dcd6b9c825b482905f24; version=cdda479f15cd13fa50a913ca85129c0437cc7b91 <d1a92bb8d697f170d93fe922da763d7d156b8841

Published CVSS scores

7.8NISTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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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