CVE-2022-4543

mediumpriority · track · 32EPSS 0.010 · 62 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · PoC

Likely / severe?

0.98% (62nd) EPSS

CVSS 5.5 · medium

Is it mine?

6 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A flaw named "EntryBleed" was found in the Linux Kernel Page Table Isolation (KPTI). This issue could allow a local attacker to leak KASLR base via prefetch side-channels based on TLB timing for Intel systems.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.16.5mediumAV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondaryexploitability 1.8 · impact 3.6

v3.15.2mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-203USprimaryCWE-200USCWE-200USCWE-203US

exploits (2)

Public proof-of-concept and weaponised exploit code.

ngtuonghung/CVE-2022-4543-EntryBleedngtuonghung/CVE-2022-4543-EntryBleedPoC · poc_in_github
sunichi/cve-2022-4543-wrappersunichi/cve-2022-4543-wrapperPoC · poc_in_github

affected products (6)

Products and version ranges known to be affected.

Open Source Linux Kernelall versionscert_bundDEcpe:/o:linux:linux_kernel:-
n/a Linux kernel≤ all versionsenisa_euvdEU
Сообщество свободного программного обеспечения Linux≤ 6.0fstec_bduRU
Сообщество свободного программного обеспечения Linux4.0 → 4.20fstec_bduRU
Сообщество свободного программного обеспечения Linux5.0 → 5.19fstec_bduRU
linux linux kernelall versionsnvdUScpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-2371Linux Kernel: Schwachstelle ermöglicht Offenlegung von InformationenDeutsch2022-12-19csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um Informationen offenzulegen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2023-01-11modified 2026-06-17

related (886)

Related entries.

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+881 more

references (9)

External citations — patches, advisories, analysis.

scry

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