BlackTreeIndependent security intelligence

Full vulnerability report · 2024

CVE-2024-50286High confidence

ksmbd: fix slab-use-after-free in ksmbd_smb2_session_create

Linux · Linux

9.8CriticalCVSS 3.1

Recommended action

Within 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Patch available

Distribution package intelligence

Ubuntu vendor package status

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

19 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`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-aws`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure-nvidia`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gcp`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gke`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gkeop`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-ibm`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-lowlatency`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia-lowlatency`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia-tegra`	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 9 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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-oracle`	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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-raspi`	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 9 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 9 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 9 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 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-xilinx`	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 9 Sept 2026

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-2024-45177

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 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Patch available

What, why and how

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-use-after-free in ksmbd_smb2_session_create There is a race condition between ksmbd_smb2_session_create and ksmbd_expire_session. This patch add missing sessions_table_lock while adding/deleting session from global session table.

What

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

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: a network path → Use After Free → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface: Network
Privileges required: None: unauthenticated exploitation is possible
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: a standard category for the underlying weakness.: CWE-416 ↗
CWE-416: Use After Free. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.1/AV:N/AC:L/PR:N/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.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing 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: No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.

NetworkUnauthenticatedCWE-416

Official authority intelligence

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

ENISA EUVD · EUVD-2024-45177Official EUVD mapping

0 linked advisory records.

Official EUVD record

BSI · German · WID-SEC-W-2024-3497Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Zustand herbeizuführen oderum einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory

CERT-FR · French · CERTFR-2026-AVI-0326Multiples vulnérabilités dans les produits VMware

d?id=CVE-2024-50166 Référence CVE CVE-2024-50183 https://www.cve.org/CVERecord?id=CVE-2024-50183 Référence CVE CVE-2024-50187 https://www.cve.org/CVERecord?id=CVE-2024-50187 Référence CVE CVE-2024-50211 https://www.cve.org/CVERecord?id=CVE-2024-50211 Référence CVE CVE-2024-50217 https://www.cve.org/CVERecord?id=CVE-2024-50217 Référence CVE CVE-2024-50246 https://www.cve.org/CVERecord?id=CVE-2024-50246 Référence CVE CVE-2024-50271 https://www.cve.org/CVERecord?id=CVE-2024-50271 Référence CVE CVE-2024-50284 https://www.cve.org/CVERecord?id=CVE-2024-50284 Référence CVE CVE-2024-50285 https://www.cve.org/CVERecord?id=CVE-2024-50285 Référence CVE CVE-2024-50286 https://www.cve.org/CVERecord?id=CVE-2024-50286 Référence CVE CVE-2024-50289 https://www.cve.org/CVERecord?id=CVE-2024-50289 Référence CVE CVE-2024-50298 https://www.cve.org/CVERecord?id=CVE-2024-50298 Référence CVE CVE-2024-52005 https://www.cve.org/CVERecord?id=CVE-2024-52005 Référence CVE CVE-2024-52559 https://www.cve.org/CVERecord?id=CVE-2024-52559 Référence CVE CVE-2024-52560 https://www.cve.org/CVERecord?id=CVE-2024-52560 Référence CVE CVE-2024-53056 https://www.cve.org/CVERecord?id=CVE-2024-53056 Référence CVE CVE-2024-53079 https://www.cve.org/CVERecord?id=CVE-2024-53079 Référence CVE CVE-2024-53091 https://www.cve.org/CVERecord?id=

Official advisory

CERT-FR · French · CERTFR-2026-AVI-0316Multiples vulnérabilités dans les produits VMware

Official advisory

CERT-FR · French · CERTFR-2025-AVI-0366Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2024-50275 Référence CVE CVE-2024-50276 https://www.cve.org/CVERecord?id=CVE-2024-50276 Référence CVE CVE-2024-50278 https://www.cve.org/CVERecord?id=CVE-2024-50278 Référence CVE CVE-2024-50279 https://www.cve.org/CVERecord?id=CVE-2024-50279 Référence CVE CVE-2024-50280 https://www.cve.org/CVERecord?id=CVE-2024-50280 Référence CVE CVE-2024-50282 https://www.cve.org/CVERecord?id=CVE-2024-50282 Référence CVE CVE-2024-50283 https://www.cve.org/CVERecord?id=CVE-2024-50283 Référence CVE CVE-2024-50284 https://www.cve.org/CVERecord?id=CVE-2024-50284 Référence CVE CVE-2024-50285 https://www.cve.org/CVERecord?id=CVE-2024-50285 Référence CVE CVE-2024-50286 https://www.cve.org/CVERecord?id=CVE-2024-50286 Référence CVE CVE-2024-50287 https://www.cve.org/CVERecord?id=CVE-2024-50287 Référence CVE CVE-2024-50288 https://www.cve.org/CVERecord?id=CVE-2024-50288 Référence CVE CVE-2024-50289 https://www.cve.org/CVERecord?id=CVE-2024-50289 Référence CVE CVE-2024-50290 https://www.cve.org/CVERecord?id=CVE-2024-50290 Référence CVE CVE-2024-50291 https://www.cve.org/CVERecord?id=CVE-2024-50291 Référence CVE CVE-2024-50292 https://www.cve.org/CVERecord?id=CVE-2024-50292 Référence CVE CVE-2024-50294 https://www.cve.org/CVERecord?id=CVE-2024-50294 Référence CVE CVE-2024-50295 https://www.cve.org/CVERecord?id=

Official advisory

CERT-FR · French · CERTFR-2025-AVI-0349Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Official advisory

CERT-FR · French · CERTFR-2025-AVI-0185Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2024-50277 Référence CVE CVE-2024-50278 https://www.cve.org/CVERecord?id=CVE-2024-50278 Référence CVE CVE-2024-50279 https://www.cve.org/CVERecord?id=CVE-2024-50279 Référence CVE CVE-2024-50280 https://www.cve.org/CVERecord?id=CVE-2024-50280 Référence CVE CVE-2024-50281 https://www.cve.org/CVERecord?id=CVE-2024-50281 Référence CVE CVE-2024-50282 https://www.cve.org/CVERecord?id=CVE-2024-50282 Référence CVE CVE-2024-50283 https://www.cve.org/CVERecord?id=CVE-2024-50283 Référence CVE CVE-2024-50284 https://www.cve.org/CVERecord?id=CVE-2024-50284 Référence CVE CVE-2024-50285 https://www.cve.org/CVERecord?id=CVE-2024-50285 Référence CVE CVE-2024-50286 https://www.cve.org/CVERecord?id=CVE-2024-50286 Référence CVE CVE-2024-50287 https://www.cve.org/CVERecord?id=CVE-2024-50287 Référence CVE CVE-2024-50288 https://www.cve.org/CVERecord?id=CVE-2024-50288 Référence CVE CVE-2024-50289 https://www.cve.org/CVERecord?id=CVE-2024-50289 Référence CVE CVE-2024-50290 https://www.cve.org/CVERecord?id=CVE-2024-50290 Référence CVE CVE-2024-50291 https://www.cve.org/CVERecord?id=CVE-2024-50291 Référence CVE CVE-2024-50292 https://www.cve.org/CVERecord?id=CVE-2024-50292 Référence CVE CVE-2024-50293 https://www.cve.org/CVERecord?id=CVE-2024-50293 Référence CVE CVE-2024-50294 https://www.cve.org/CVERecord?id=

Official advisory

CERT-FR · French · CERTFR-2025-AVI-0152Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Official advisory

CERT-FR · French · CERTFR-2025-AVI-0002Multiples vulnérabilités dans le noyau Linux de Debian LTS

d?id=CVE-2024-50272 Référence CVE CVE-2024-50273 https://www.cve.org/CVERecord?id=CVE-2024-50273 Référence CVE CVE-2024-50276 https://www.cve.org/CVERecord?id=CVE-2024-50276 Référence CVE CVE-2024-50278 https://www.cve.org/CVERecord?id=CVE-2024-50278 Référence CVE CVE-2024-50279 https://www.cve.org/CVERecord?id=CVE-2024-50279 Référence CVE CVE-2024-50280 https://www.cve.org/CVERecord?id=CVE-2024-50280 Référence CVE CVE-2024-50282 https://www.cve.org/CVERecord?id=CVE-2024-50282 Référence CVE CVE-2024-50283 https://www.cve.org/CVERecord?id=CVE-2024-50283 Référence CVE CVE-2024-50284 https://www.cve.org/CVERecord?id=CVE-2024-50284 Référence CVE CVE-2024-50286 https://www.cve.org/CVERecord?id=CVE-2024-50286 Référence CVE CVE-2024-50287 https://www.cve.org/CVERecord?id=CVE-2024-50287 Référence CVE CVE-2024-50290 https://www.cve.org/CVERecord?id=CVE-2024-50290 Référence CVE CVE-2024-50292 https://www.cve.org/CVERecord?id=CVE-2024-50292 Référence CVE CVE-2024-50295 https://www.cve.org/CVERecord?id=CVE-2024-50295 Référence CVE CVE-2024-50296 https://www.cve.org/CVERecord?id=CVE-2024-50296 Référence CVE CVE-2024-50299 https://www.cve.org/CVERecord?id=CVE-2024-50299 Référence CVE CVE-2024-50301 https://www.cve.org/CVERecord?id=CVE-2024-50301 Référence CVE CVE-2024-50302 https://www.cve.org/CVERecord?id=

Official advisory

CERT-FR · French · CERTFR-2024-AVI-1031Multiples vulnérabilités dans le noyau Linux de Debian

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: 0626e6641f6b467447c81dd7678a69c66f7746cf < f56446ba5378d19e31040b548a14ee9a8f1500ea; 0626e6641f6b467447c81dd7678a69c66f7746cf < e923503a56b3385b64ae492e3225e4623f560c5b; 0626e6641f6b467447c81dd7678a69c66f7746cf < e7a2ad2044377853cf8c59528dac808a08a99c72; 0626e6641f6b467447c81dd7678a69c66f7746cf < 0a77715db22611df50b178374c51e2ba0d58866e; 5.15
Fixed: < 5.15; 6.1.117 ≤ 6.1.*; 6.6.61 ≤ 6.6.*; 6.11.8 ≤ 6.11.*; 6.12 ≤ *
Action: Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround: No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.

Evidence and provenance

Published 19 Nov 2024 · Last source change 5 Aug 2026, 11:43 UTC · CWE-416 · Use After Free

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-2024-45177

Product sourceCNA

Remediation sourceCVE/CNA references

CWE sourceCISA ADP

NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

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.

2024-11-19CVE published

2026-08-05Fixed release or patch reference recorded

ENISA EUVD · EUVD-2024-45177↗CVE authority or vendor reference↗Patch or update reference↗Patch or update reference↗Patch or update 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.

ksmbd: fix slab-use-after-free in ksmbd_smb2_session_create

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

EUVD-2024-45177

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.