CVE-2022-48627 (GCVE-0-2022-48627)

Vulnerability from cvelistv5 – Published: 2024-03-02 21:31 – Updated: 2026-05-11 18:43
VLAI
Title
vt: fix memory overlapping when deleting chars in the buffer
Summary
In the Linux kernel, the following vulnerability has been resolved: vt: fix memory overlapping when deleting chars in the buffer A memory overlapping copy occurs when deleting a long line. This memory overlapping copy can cause data corruption when scr_memcpyw is optimized to memcpy because memcpy does not ensure its behavior if the destination buffer overlaps with the source buffer. The line buffer is not always broken, because the memcpy utilizes the hardware acceleration, whose result is not deterministic. Fix this problem by using replacing the scr_memcpyw with scr_memmovew.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 81732c3b2fede049a692e58a7ceabb6d18ffb18c , < c8686c014b5e872ba7e334f33ca553f14446fc29 (git)
Affected: 81732c3b2fede049a692e58a7ceabb6d18ffb18c , < 815be99d934e3292906536275f2b8d5131cdf52c (git)
Affected: 81732c3b2fede049a692e58a7ceabb6d18ffb18c , < bfee93c9a6c395f9aa62268f1cedf64999844926 (git)
Affected: 81732c3b2fede049a692e58a7ceabb6d18ffb18c , < 57964a5710252bc82fe22d9fa98c180c58c20244 (git)
Affected: 81732c3b2fede049a692e58a7ceabb6d18ffb18c , < 14d2cc21ca622310babf373e3a8f0b40acfe8265 (git)
Affected: 81732c3b2fede049a692e58a7ceabb6d18ffb18c , < 39cdb68c64d84e71a4a717000b6e5de208ee60cc (git)
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Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 4.19.312 , ≤ 4.19.* (semver)
Unaffected: 5.4.274 , ≤ 5.4.* (semver)
Unaffected: 5.10.132 , ≤ 5.10.* (semver)
Unaffected: 5.15.56 , ≤ 5.15.* (semver)
Unaffected: 5.18.13 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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  }
}


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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.