CVE-2022-48627

Console corruption via overlapping character deletion

Published Mar 2, 2024 · Updated May 11, 2026

Memory corruption in Linux from 3.7 before 5.19 allows local users to corrupt virtual-console data by deleting characters from a long line. The deletion path in drivers/tty/vt/vt.c uses scr_memcpyw on overlapping buffer regions, which can become an undefined memcpy operation. Reaching the flaw requires interaction with a Linux virtual console; the resulting screen-buffer corruption is nondeterministic.

CVSS severity5.5
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory corruption in Linux from 3.7 before 5.19 allows local users to corrupt virtual-console data by deleting characters from a long line. The deletion path in drivers/tty/vt/vt.c uses scr_memcpyw on overlapping buffer regions, which can become an undefined memcpy operation. Reaching the flaw requires interaction with a Linux virtual console; the resulting screen-buffer corruption is nondeterministic.

The record

CVE
CVE-2022-48627
Published
Mar 2, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 2, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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=81732c3b2fede049a692e58a7ceabb6d18ffb18c <14d2cc21ca622310babf373e3a8f0b40acfe8265
  3. Affected versionversion=81732c3b2fede049a692e58a7ceabb6d18ffb18c <39cdb68c64d84e71a4a717000b6e5de208ee60cc
  4. Affected versionversion=81732c3b2fede049a692e58a7ceabb6d18ffb18c <57964a5710252bc82fe22d9fa98c180c58c20244
  5. Affected versionversion=81732c3b2fede049a692e58a7ceabb6d18ffb18c <815be99d934e3292906536275f2b8d5131cdf52c
  6. Affected versionversion=81732c3b2fede049a692e58a7ceabb6d18ffb18c <bfee93c9a6c395f9aa62268f1cedf64999844926
  7. Affected versionversion=81732c3b2fede049a692e58a7ceabb6d18ffb18c <c8686c014b5e872ba7e334f33ca553f14446fc29

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.7; version=81732c3b2fede049a692e58a7ceabb6d18ffb18c <14d2cc21ca622310babf373e3a8f0b40acfe8265; version=81732c3b2fede049a692e58a7ceabb6d18ffb18c <39cdb68c64d84e71a4a717000b6e5de208ee60cc; version=81732c3b2fede049a692e58a7ceabb6d18ffb18c <57964a5710252bc82fe22d9fa98c180c58c20244; version=81732c3b2fede049a692e58a7ceabb6d18ffb18c <815be99d934e3292906536275f2b8d5131cdf52c; version=81732c3b2fede049a692e58a7ceabb6d18ffb18c <bfee93c9a6c395f9aa62268f1cedf64999844926; version=81732c3b2fede049a692e58a7ceabb6d18ffb18c <c8686c014b5e872ba7e334f33ca553f14446fc29

Published CVSS scores

4.4Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.4SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo