CVE-2023-4389

highpriority · track · 28EPSS 0.003 · 17 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.25% (17th) EPSS

CVSS 7.1 · high

Is it mine?

13 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a double decrement of the reference count. This issue may allow a local attacker with user privilege to crash the system or may lead to leaked internal kernel information.

cvss

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

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–7.1

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.2

v3.17.1highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · secalert@redhat.com USexploitability 1 · impact 5.9

v3.16.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-415USprimaryCWE-415USCWE-416US

affected products (13)

Products and version ranges known to be affected.

Dell NetWorker vProxy< 19.10all versionscert_bundDEcpe:/a:dell:networker:vproxy_19.10
Dell NetWorker vProxy< 19.9.0.4all versionscert_bundDEcpe:/a:dell:networker:vproxy_19.9.0.4
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Oracle VM 3all versionscert_bundDEcpe:/a:oracle:vm:3
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
АО «НППКТ» ОСОН ОСнова Оnyx≤ 2.9fstec_bduRU
Сообщество свободного программного обеспечения Linux5.11 → 5.15.34fstec_bduRU
Сообщество свободного программного обеспечения Linux5.16 → 5.17.3fstec_bduRU
Сообщество свободного программного обеспечения Linux5.7 → 5.10.111fstec_bduRU
linux linux kernel5.11 → 5.15.35nvdUScpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux kernel5.16 → 5.17.4nvdUScpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux kernel5.7 → 5.10.112nvdUScpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2074Linux Kernel: Mehrere SchwachstellenDeutsch2023-08-16csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen und vertrauliche 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 2023-08-16modified 2026-06-17

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+1203 more

references (14)

External citations — patches, advisories, analysis.

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