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Full vulnerability report · 2024
CVE-2024-47677High confidence

exfat: resolve memory leak from exfat_create_upcase_table()

Linux · Linux

5.5MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
Distribution package intelligence

Ubuntu vendor package status

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

15 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 releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivelinuxAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-awsAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azureAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gcpAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeopAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-ibmAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-lowlatencyAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidiaAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-lowlatencyAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oem-6.11Affected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oracleAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspiAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-realtimeAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-riscvAffected, 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 feedCanonical record ↗Source updated 11 Sept 2026
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2024-42598

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 actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

In the Linux kernel, the following vulnerability has been resolved: exfat: resolve memory leak from exfat_create_upcase_table() If exfat_load_upcase_table reaches end and returns -EINVAL, allocated memory doesn't get freed and while exfat_load_default_upcase_table allocates more memory, leading to a memory leak. Here's link to syzkaller crash report illustrating this issue: https://syzkaller.appspot.com/text?tag=CrashReport&x=1406c201980000

What

In the Linux kernel, the following vulnerability has been resolved: exfat: resolve memory leak from exfat_create_upcase_table() If exfat_load_upcase_table reaches end and returns -EINVAL, allocated memory doesn't get freed and while exfat_load_default_upcase_table allocates more memory, leading to a memory leak. Here's link to syzkaller crash report illustrating this issue: https://syzkaller.appspot.com/text?tag=CrashReport&x=1406c201980000

Why

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

What

In the Linux kernel, the following vulnerability has been resolved: exfat: resolve memory leak from exfat_create_upcase_table() If exfat_load_upcase_table reaches end and returns -EINVAL, allocated memory doesn't get freed and while exfat_load_default_upcase_table allocates more memory, leading to a memory leak. Here's link to syzkaller crash report illustrating this issue: https://syzkaller.appspot.com/text?tag=CrashReport&x=1406c201980000

Why

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

02

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 → Missing Release of Memory after Effective Lifetime → disrupt the affected service
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: a standard category for the underlying weakness.
CWE-401 ↗

CWE-401: Missing Release of Memory after Effective Lifetime. The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

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:N/I:N/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.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.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.
Denial of serviceCWE-401
A

Official authority intelligence

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

BSI · German · WID-SEC-2024-3251Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder andere, nicht näher bekannte Auswirkungen zu erzielen..

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20241023Security Bulletin 23 Oct 2024

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 23 Oct 2024, published on 23 October 2024. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0276Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2024-46871 Référence CVE CVE-2024-47143 https://www.cve.org/CVERecord?id=CVE-2024-47143 Référence CVE CVE-2024-47408 https://www.cve.org/CVERecord?id=CVE-2024-47408 Référence CVE CVE-2024-47670 https://www.cve.org/CVERecord?id=CVE-2024-47670 Référence CVE CVE-2024-47671 https://www.cve.org/CVERecord?id=CVE-2024-47671 Référence CVE CVE-2024-47672 https://www.cve.org/CVERecord?id=CVE-2024-47672 Référence CVE CVE-2024-47673 https://www.cve.org/CVERecord?id=CVE-2024-47673 Référence CVE CVE-2024-47674 https://www.cve.org/CVERecord?id=CVE-2024-47674 Référence CVE CVE-2024-47675 https://www.cve.org/CVERecord?id=CVE-2024-47675 Référence CVE CVE-2024-47677 https://www.cve.org/CVERecord?id=CVE-2024-47677 Référence CVE CVE-2024-47678 https://www.cve.org/CVERecord?id=CVE-2024-47678 Référence CVE CVE-2024-47679 https://www.cve.org/CVERecord?id=CVE-2024-47679 Référence CVE CVE-2024-47681 https://www.cve.org/CVERecord?id=CVE-2024-47681 Référence CVE CVE-2024-47682 https://www.cve.org/CVERecord?id=CVE-2024-47682 Référence CVE CVE-2024-47684 https://www.cve.org/CVERecord?id=CVE-2024-47684 Référence CVE CVE-2024-47685 https://www.cve.org/CVERecord?id=CVE-2024-47685 Référence CVE CVE-2024-47686 https://www.cve.org/CVERecord?id=CVE-2024-47686 Référence CVE CVE-2024-47687 https://www.cve.org/CVERecord?id=

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

d?id=CVE-2024-46854 Référence CVE CVE-2024-46869 https://www.cve.org/CVERecord?id=CVE-2024-46869 Référence CVE CVE-2024-47670 https://www.cve.org/CVERecord?id=CVE-2024-47670 Référence CVE CVE-2024-47671 https://www.cve.org/CVERecord?id=CVE-2024-47671 Référence CVE CVE-2024-47672 https://www.cve.org/CVERecord?id=CVE-2024-47672 Référence CVE CVE-2024-47673 https://www.cve.org/CVERecord?id=CVE-2024-47673 Référence CVE CVE-2024-47674 https://www.cve.org/CVERecord?id=CVE-2024-47674 Référence CVE CVE-2024-47675 https://www.cve.org/CVERecord?id=CVE-2024-47675 Référence CVE CVE-2024-47676 https://www.cve.org/CVERecord?id=CVE-2024-47676 Référence CVE CVE-2024-47677 https://www.cve.org/CVERecord?id=CVE-2024-47677 Référence CVE CVE-2024-47678 https://www.cve.org/CVERecord?id=CVE-2024-47678 Référence CVE CVE-2024-47679 https://www.cve.org/CVERecord?id=CVE-2024-47679 Référence CVE CVE-2024-47680 https://www.cve.org/CVERecord?id=CVE-2024-47680 Référence CVE CVE-2024-47681 https://www.cve.org/CVERecord?id=CVE-2024-47681 Référence CVE CVE-2024-47682 https://www.cve.org/CVERecord?id=CVE-2024-47682 Référence CVE CVE-2024-47684 https://www.cve.org/CVERecord?id=CVE-2024-47684 Référence CVE CVE-2024-47685 https://www.cve.org/CVERecord?id=CVE-2024-47685 Référence CVE CVE-2024-47686 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0168Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2024-46849 Référence CVE CVE-2024-46853 https://www.cve.org/CVERecord?id=CVE-2024-46853 Référence CVE CVE-2024-46854 https://www.cve.org/CVERecord?id=CVE-2024-46854 Référence CVE CVE-2024-47670 https://www.cve.org/CVERecord?id=CVE-2024-47670 Référence CVE CVE-2024-47671 https://www.cve.org/CVERecord?id=CVE-2024-47671 Référence CVE CVE-2024-47672 https://www.cve.org/CVERecord?id=CVE-2024-47672 Référence CVE CVE-2024-47673 https://www.cve.org/CVERecord?id=CVE-2024-47673 Référence CVE CVE-2024-47674 https://www.cve.org/CVERecord?id=CVE-2024-47674 Référence CVE CVE-2024-47675 https://www.cve.org/CVERecord?id=CVE-2024-47675 Référence CVE CVE-2024-47677 https://www.cve.org/CVERecord?id=CVE-2024-47677 Référence CVE CVE-2024-47678 https://www.cve.org/CVERecord?id=CVE-2024-47678 Référence CVE CVE-2024-47679 https://www.cve.org/CVERecord?id=CVE-2024-47679 Référence CVE CVE-2024-47681 https://www.cve.org/CVERecord?id=CVE-2024-47681 Référence CVE CVE-2024-47682 https://www.cve.org/CVERecord?id=CVE-2024-47682 Référence CVE CVE-2024-47684 https://www.cve.org/CVERecord?id=CVE-2024-47684 Référence CVE CVE-2024-47685 https://www.cve.org/CVERecord?id=CVE-2024-47685 Référence CVE CVE-2024-47686 https://www.cve.org/CVERecord?id=CVE-2024-47686 Référence CVE CVE-2024-47687 https://www.cve.org/CVERecord?id=

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

d?id=CVE-2023-52917 Référence CVE CVE-2024-26800 https://www.cve.org/CVERecord?id=CVE-2024-26800 Référence CVE CVE-2024-26921 https://www.cve.org/CVERecord?id=CVE-2024-26921 Référence CVE CVE-2024-38630 https://www.cve.org/CVERecord?id=CVE-2024-38630 Référence CVE CVE-2024-43882 https://www.cve.org/CVERecord?id=CVE-2024-43882 Référence CVE CVE-2024-46869 https://www.cve.org/CVERecord?id=CVE-2024-46869 Référence CVE CVE-2024-47671 https://www.cve.org/CVERecord?id=CVE-2024-47671 Référence CVE CVE-2024-47675 https://www.cve.org/CVERecord?id=CVE-2024-47675 Référence CVE CVE-2024-47676 https://www.cve.org/CVERecord?id=CVE-2024-47676 Référence CVE CVE-2024-47677 https://www.cve.org/CVERecord?id=CVE-2024-47677 Référence CVE CVE-2024-47678 https://www.cve.org/CVERecord?id=CVE-2024-47678 Référence CVE CVE-2024-47679 https://www.cve.org/CVERecord?id=CVE-2024-47679 Référence CVE CVE-2024-47680 https://www.cve.org/CVERecord?id=CVE-2024-47680 Référence CVE CVE-2024-47681 https://www.cve.org/CVERecord?id=CVE-2024-47681 Référence CVE CVE-2024-47682 https://www.cve.org/CVERecord?id=CVE-2024-47682 Référence CVE CVE-2024-47684 https://www.cve.org/CVERecord?id=CVE-2024-47684 Référence CVE CVE-2024-47685 https://www.cve.org/CVERecord?id=CVE-2024-47685 Référence CVE CVE-2024-47686 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2024-011252Linux の Linux Kernel における有効期限後のメモリの解放の欠如に関する脆弱性

Linux の Linux Kernel には、有効期限後のメモリの解放の欠如に関する脆弱性が存在します。

Official advisory ↗
03

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
Linux: a13d1a4de3b0fe3c41d818697d691c886c5585fa < f9835aec49670c46ebe2973032caaa1043b3d4da, a13d1a4de3b0fe3c41d818697d691c886c5585fa < 331ed2c739ce656a67865f6b3ee0a478349d78cb, a13d1a4de3b0fe3c41d818697d691c886c5585fa < c290fe508eee36df1640c3cb35dc8f89e073c8a8, 6.8
Fixed
Linux: < 6.8, 6.10.13 ≤ 6.10.*, 6.11.2 ≤ 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. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 21 Oct 2024 · Last source change 11 May 2026, 20:38 UTC · CWE-401 · Missing Release of Memory after Effective Lifetime

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
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-2024-42598
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD enriched

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.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2024-42598↗CVE authority or vendor 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.
Free version - for non-commercial use only.CVE-2024-47677 · cve.blacktree.nl