BlackTreeIndependent security intelligence

Full vulnerability report · 2025

CVE-2022-50758High confidence

staging: vt6655: fix potential memory leak

Linux · Linux

7.8HighCVSS 3.1

Recommended action

Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available

Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

9 package states

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Ubuntu release	Source package	Vendor state	Fixed version	Evidence
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure-6.11`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gcp-6.11`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-hwe-6.11`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-lowlatency-hwe-6.11`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia-6.11`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-oem-6.11`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-raspi-realtime`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-realtime`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-riscv`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical record ↗Source updated 8 Sept 2026

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current

CVE-2022-50758 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitykernel: Kernel: Memory leak in vt6655 driver via improper memory deallocation

274 known not affected

The vendor explicitly states that these products are not affected by this CVE.

kernel as a component of Red Hat Enterprise Linux 10
kernel-64k as a component of Red Hat Enterprise Linux 10
kernel-64k-core as a component of Red Hat Enterprise Linux 10
kernel-64k-debug as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-core as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-devel as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-devel-matched as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-modules as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-modules-core as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-modules-extra as a component of Red Hat Enterprise Linux 10
kernel-64k-devel as a component of Red Hat Enterprise Linux 10
kernel-64k-devel-matched as a component of Red Hat Enterprise Linux 10

Summary: A flaw was found in the Linux kernel's `vt6655` driver. During memory allocation failure within the `device_init_td0_ring` function, a specific memory block is not properly deallocated due to an error in the memory freeing loop. A local attacker could exploit this flaw, leading to a memory leak and potentially a Denial of Service (DoS) due to resource exhaustion.
Remediation: No remediation text is recorded.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current

ENISA EUVD identifier

EUVD-2022-55803

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state: Present in the current official mapping
Known exploitation: Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score: Not supplied in the stored EUVD record
Advisory evidence: No linked advisory details stored yet

Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available

What, why and how

In the Linux kernel, the following vulnerability has been resolved: staging: vt6655: fix potential memory leak In function device_init_td0_ring, memory is allocated for member td_info of priv->apTD0Rings[i], with i increasing from 0. In case of allocation failure, the memory is freed in reversed order, with i decreasing to 0. However, the case i=0 is left out and thus memory is leaked. Modify the memory freeing loop to include the case i=0.

What

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path: local access → vulnerable operation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface: Local
Privileges required: Low: a basic authenticated account is required
User interaction: None
Attack complexity: Low: no specialised conditions are recorded
Security boundary: Unchanged: impact remains within the vulnerable component's security authority
Weakness ? CWE means Common Weakness Enumeration.: CWE not yet assigned
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land: The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2022-55803Official EUVD mapping

0 linked advisory records.

Official EUVD record

BSI · German · WID-SEC-W-2025-2929Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um nicht näher spezifizierte Angriffe durchzuführen, die möglicherweise zu einer Denial-of-Service- Bedingung führen oder eine Speicherbeschädigung verursachen können.

Official advisory

CERT-FR · French · CERTFR-2026-AVI-0225Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-50747 Référence CVE CVE-2022-50749 https://www.cve.org/CVERecord?id=CVE-2022-50749 Référence CVE CVE-2022-50750 https://www.cve.org/CVERecord?id=CVE-2022-50750 Référence CVE CVE-2022-50751 https://www.cve.org/CVERecord?id=CVE-2022-50751 Référence CVE CVE-2022-50752 https://www.cve.org/CVERecord?id=CVE-2022-50752 Référence CVE CVE-2022-50754 https://www.cve.org/CVERecord?id=CVE-2022-50754 Référence CVE CVE-2022-50755 https://www.cve.org/CVERecord?id=CVE-2022-50755 Référence CVE CVE-2022-50756 https://www.cve.org/CVERecord?id=CVE-2022-50756 Référence CVE CVE-2022-50757 https://www.cve.org/CVERecord?id=CVE-2022-50757 Référence CVE CVE-2022-50758 https://www.cve.org/CVERecord?id=CVE-2022-50758 Référence CVE CVE-2022-50760 https://www.cve.org/CVERecord?id=CVE-2022-50760 Référence CVE CVE-2022-50761 https://www.cve.org/CVERecord?id=CVE-2022-50761 Référence CVE CVE-2022-50763 https://www.cve.org/CVERecord?id=CVE-2022-50763 Référence CVE CVE-2022-50767 https://www.cve.org/CVERecord?id=CVE-2022-50767 Référence CVE CVE-2022-50769 https://www.cve.org/CVERecord?id=CVE-2022-50769 Référence CVE CVE-2022-50770 https://www.cve.org/CVERecord?id=CVE-2022-50770 Référence CVE CVE-2022-50773 https://www.cve.org/CVERecord?id=CVE-2022-50773 Référence CVE CVE-2022-50774 https://www.cve.org/CVERecord?id=

Official advisory

CERT-FR · French · CERTFR-2026-AVI-0170Multiples vulnérabilités dans le noyau Linux de SUSE

Official advisory

CERT-FR · French · CERTFR-2026-AVI-0128Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-50717 Référence CVE CVE-2022-50726 https://www.cve.org/CVERecord?id=CVE-2022-50726 Référence CVE CVE-2022-50730 https://www.cve.org/CVERecord?id=CVE-2022-50730 Référence CVE CVE-2022-50731 https://www.cve.org/CVERecord?id=CVE-2022-50731 Référence CVE CVE-2022-50733 https://www.cve.org/CVERecord?id=CVE-2022-50733 Référence CVE CVE-2022-50736 https://www.cve.org/CVERecord?id=CVE-2022-50736 Référence CVE CVE-2022-50742 https://www.cve.org/CVERecord?id=CVE-2022-50742 Référence CVE CVE-2022-50744 https://www.cve.org/CVERecord?id=CVE-2022-50744 Référence CVE CVE-2022-50756 https://www.cve.org/CVERecord?id=CVE-2022-50756 Référence CVE CVE-2022-50758 https://www.cve.org/CVERecord?id=CVE-2022-50758 Référence CVE CVE-2022-50767 https://www.cve.org/CVERecord?id=CVE-2022-50767 Référence CVE CVE-2022-50814 https://www.cve.org/CVERecord?id=CVE-2022-50814 Référence CVE CVE-2022-50821 https://www.cve.org/CVERecord?id=CVE-2022-50821 Référence CVE CVE-2022-50823 https://www.cve.org/CVERecord?id=CVE-2022-50823 Référence CVE CVE-2022-50827 https://www.cve.org/CVERecord?id=CVE-2022-50827 Référence CVE CVE-2022-50828 https://www.cve.org/CVERecord?id=CVE-2022-50828 Référence CVE CVE-2022-50840 https://www.cve.org/CVERecord?id=CVE-2022-50840 Référence CVE CVE-2022-50843 https://www.cve.org/CVERecord?id=

Official advisory

CERT-FR · French · CERTFR-2026-AVI-0108Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-50747 Référence CVE CVE-2022-50749 https://www.cve.org/CVERecord?id=CVE-2022-50749 Référence CVE CVE-2022-50750 https://www.cve.org/CVERecord?id=CVE-2022-50750 Référence CVE CVE-2022-50751 https://www.cve.org/CVERecord?id=CVE-2022-50751 Référence CVE CVE-2022-50752 https://www.cve.org/CVERecord?id=CVE-2022-50752 Référence CVE CVE-2022-50754 https://www.cve.org/CVERecord?id=CVE-2022-50754 Référence CVE CVE-2022-50755 https://www.cve.org/CVERecord?id=CVE-2022-50755 Référence CVE CVE-2022-50756 https://www.cve.org/CVERecord?id=CVE-2022-50756 Référence CVE CVE-2022-50757 https://www.cve.org/CVERecord?id=CVE-2022-50757 Référence CVE CVE-2022-50758 https://www.cve.org/CVERecord?id=CVE-2022-50758 Référence CVE CVE-2022-50760 https://www.cve.org/CVERecord?id=CVE-2022-50760 Référence CVE CVE-2022-50761 https://www.cve.org/CVERecord?id=CVE-2022-50761 Référence CVE CVE-2022-50763 https://www.cve.org/CVERecord?id=CVE-2022-50763 Référence CVE CVE-2022-50767 https://www.cve.org/CVERecord?id=CVE-2022-50767 Référence CVE CVE-2022-50768 https://www.cve.org/CVERecord?id=CVE-2022-50768 Référence CVE CVE-2022-50769 https://www.cve.org/CVERecord?id=CVE-2022-50769 Référence CVE CVE-2022-50770 https://www.cve.org/CVERecord?id=CVE-2022-50770 Référence CVE CVE-2022-50773 https://www.cve.org/CVERecord?id=

Official advisory

Patch and workaround

Operational remediation based on structured source evidence.

Status ? Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.: Patch available
Affected: 5341ee0adb17d12a96dc5344e0d267cd12b52135 < e741e38aa98704fbb959650ecd270b71b2670680; 5341ee0adb17d12a96dc5344e0d267cd12b52135 < 16a45e78a687eb6c69acc4e62b94b6508b0bfbda; 5341ee0adb17d12a96dc5344e0d267cd12b52135 < 1b3cebeca99e8e0aa4fa57faac8dbf41e967317a; 5341ee0adb17d12a96dc5344e0d267cd12b52135 < ff8551d411f12b5abc5ca929ab87643afa8a9588; 5341ee0adb17d12a96dc5344e0d267cd12b52135 < fb5f569bcda8f87bd47d8030bfae343d757fa3ea; 5341ee0adb17d12a96dc5344e0d267cd12b52135 < cfdf139258614ef65b0f68b857ada5328fb7c0e5; 5341ee0adb17d12a96dc5344e0d267cd12b52135 < c8ff91535880d41b49699b3829fb6151942de29e; 4.18
Fixed: < 4.18; 4.19.262 ≤ 4.19.*; 5.4.220 ≤ 5.4.*; 5.10.150 ≤ 5.10.*; 5.15.75 ≤ 5.15.*; 5.19.17 ≤ 5.19.*; 6.0.3 ≤ 6.0.*; 6.1 ≤ *
Action: Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround: No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.

Evidence and provenance

Published 24 Dec 2025 · Last source change 5 Aug 2026, 08:59 UTC · CWE not yet assigned

CVE recordCVE.org · 5.2

CVSS sourceCNA

EPSS source

The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.

FIRST · tracked since 2026-08-14

European sourceENISA EUVD · EUVD-2022-55803

Product sourceCNA

Remediation sourceCVE/CNA references

CWE sourceUnavailable

NVD statusNVD not scheduled

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

2025-12-24CVE published

2026-08-05Fixed release or patch reference recorded

ENISA EUVD · EUVD-2022-55803↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗

Technical terms and abbreviations used in this report

CVE: Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS: Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS: Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE: Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA: CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP: Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD: National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT: A computer security incident response team that publishes warnings or coordinates incident response.
PoC: Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF: Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL: Living off the land: abuse of legitimate tools or system functions during an attack.

staging: vt6655: fix potential memory leak

National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

EUVD-2022-55803

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.