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Full vulnerability report · 2025
CVE-2023-53008High confidence

cifs: fix potential memory leaks in session setup

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.

2 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 archivelinux-raspi-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 9 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 9 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-2023-59712

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: cifs: fix potential memory leaks in session setup Make sure to free cifs_ses::auth_key.response before allocating it as we might end up leaking memory in reconnect or mounting.

What

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential memory leaks in session setup Make sure to free cifs_ses::auth_key.response before allocating it as we might end up leaking memory in reconnect or mounting.

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 cause the confidentiality, integrity or availability impact described by the vendor.

What

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential memory leaks in session setup Make sure to free cifs_ses::auth_key.response before allocating it as we might end up leaking memory in reconnect or mounting.

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 cause the confidentiality, integrity or availability impact described by the vendor.

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 → 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: 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.
CWE-401
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2025-0649Linux Kernel: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder nicht spezifizierte Effekte zu erzielen.

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

d?id=CVE-2023-52888 Référence CVE CVE-2023-52905 https://www.cve.org/CVERecord?id=CVE-2023-52905 Référence CVE CVE-2023-52916 https://www.cve.org/CVERecord?id=CVE-2023-52916 Référence CVE CVE-2023-52920 https://www.cve.org/CVERecord?id=CVE-2023-52920 Référence CVE CVE-2023-52921 https://www.cve.org/CVERecord?id=CVE-2023-52921 Référence CVE CVE-2023-52926 https://www.cve.org/CVERecord?id=CVE-2023-52926 Référence CVE CVE-2023-52939 https://www.cve.org/CVERecord?id=CVE-2023-52939 Référence CVE CVE-2023-52981 https://www.cve.org/CVERecord?id=CVE-2023-52981 Référence CVE CVE-2023-53002 https://www.cve.org/CVERecord?id=CVE-2023-53002 Référence CVE CVE-2023-53008 https://www.cve.org/CVERecord?id=CVE-2023-53008 Référence CVE CVE-2023-53009 https://www.cve.org/CVERecord?id=CVE-2023-53009 Référence CVE CVE-2023-53010 https://www.cve.org/CVERecord?id=CVE-2023-53010 Référence CVE CVE-2023-53036 https://www.cve.org/CVERecord?id=CVE-2023-53036 Référence CVE CVE-2023-53037 https://www.cve.org/CVERecord?id=CVE-2023-53037 Référence CVE CVE-2023-53042 https://www.cve.org/CVERecord?id=CVE-2023-53042 Référence CVE CVE-2023-53052 https://www.cve.org/CVERecord?id=CVE-2023-53052 Référence CVE CVE-2023-53068 https://www.cve.org/CVERecord?id=CVE-2023-53068 Référence CVE CVE-2023-53072 https://www.cve.org/CVERecord?id=

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

d?id=CVE-2023-52888 Référence CVE CVE-2023-52905 https://www.cve.org/CVERecord?id=CVE-2023-52905 Référence CVE CVE-2023-52916 https://www.cve.org/CVERecord?id=CVE-2023-52916 Référence CVE CVE-2023-52920 https://www.cve.org/CVERecord?id=CVE-2023-52920 Référence CVE CVE-2023-52921 https://www.cve.org/CVERecord?id=CVE-2023-52921 Référence CVE CVE-2023-52926 https://www.cve.org/CVERecord?id=CVE-2023-52926 Référence CVE CVE-2023-52939 https://www.cve.org/CVERecord?id=CVE-2023-52939 Référence CVE CVE-2023-52981 https://www.cve.org/CVERecord?id=CVE-2023-52981 Référence CVE CVE-2023-53002 https://www.cve.org/CVERecord?id=CVE-2023-53002 Référence CVE CVE-2023-53008 https://www.cve.org/CVERecord?id=CVE-2023-53008 Référence CVE CVE-2023-53009 https://www.cve.org/CVERecord?id=CVE-2023-53009 Référence CVE CVE-2023-53010 https://www.cve.org/CVERecord?id=CVE-2023-53010 Référence CVE CVE-2023-53036 https://www.cve.org/CVERecord?id=CVE-2023-53036 Référence CVE CVE-2023-53037 https://www.cve.org/CVERecord?id=CVE-2023-53037 Référence CVE CVE-2023-53042 https://www.cve.org/CVERecord?id=CVE-2023-53042 Référence CVE CVE-2023-53052 https://www.cve.org/CVERecord?id=CVE-2023-53052 Référence CVE CVE-2023-53068 https://www.cve.org/CVERecord?id=CVE-2023-53068 Référence CVE CVE-2023-53072 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0336Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-52988 Référence CVE CVE-2023-52989 https://www.cve.org/CVERecord?id=CVE-2023-52989 Référence CVE CVE-2023-52992 https://www.cve.org/CVERecord?id=CVE-2023-52992 Référence CVE CVE-2023-52993 https://www.cve.org/CVERecord?id=CVE-2023-52993 Référence CVE CVE-2023-52997 https://www.cve.org/CVERecord?id=CVE-2023-52997 Référence CVE CVE-2023-53000 https://www.cve.org/CVERecord?id=CVE-2023-53000 Référence CVE CVE-2023-53005 https://www.cve.org/CVERecord?id=CVE-2023-53005 Référence CVE CVE-2023-53006 https://www.cve.org/CVERecord?id=CVE-2023-53006 Référence CVE CVE-2023-53007 https://www.cve.org/CVERecord?id=CVE-2023-53007 Référence CVE CVE-2023-53008 https://www.cve.org/CVERecord?id=CVE-2023-53008 Référence CVE CVE-2023-53010 https://www.cve.org/CVERecord?id=CVE-2023-53010 Référence CVE CVE-2023-53015 https://www.cve.org/CVERecord?id=CVE-2023-53015 Référence CVE CVE-2023-53016 https://www.cve.org/CVERecord?id=CVE-2023-53016 Référence CVE CVE-2023-53019 https://www.cve.org/CVERecord?id=CVE-2023-53019 Référence CVE CVE-2023-53023 https://www.cve.org/CVERecord?id=CVE-2023-53023 Référence CVE CVE-2023-53024 https://www.cve.org/CVERecord?id=CVE-2023-53024 Référence CVE CVE-2023-53025 https://www.cve.org/CVERecord?id=CVE-2023-53025 Référence CVE CVE-2023-53026 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0307Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-52984 Référence CVE CVE-2023-52988 https://www.cve.org/CVERecord?id=CVE-2023-52988 Référence CVE CVE-2023-52989 https://www.cve.org/CVERecord?id=CVE-2023-52989 Référence CVE CVE-2023-52992 https://www.cve.org/CVERecord?id=CVE-2023-52992 Référence CVE CVE-2023-52993 https://www.cve.org/CVERecord?id=CVE-2023-52993 Référence CVE CVE-2023-53000 https://www.cve.org/CVERecord?id=CVE-2023-53000 Référence CVE CVE-2023-53005 https://www.cve.org/CVERecord?id=CVE-2023-53005 Référence CVE CVE-2023-53006 https://www.cve.org/CVERecord?id=CVE-2023-53006 Référence CVE CVE-2023-53007 https://www.cve.org/CVERecord?id=CVE-2023-53007 Référence CVE CVE-2023-53008 https://www.cve.org/CVERecord?id=CVE-2023-53008 Référence CVE CVE-2023-53010 https://www.cve.org/CVERecord?id=CVE-2023-53010 Référence CVE CVE-2023-53015 https://www.cve.org/CVERecord?id=CVE-2023-53015 Référence CVE CVE-2023-53016 https://www.cve.org/CVERecord?id=CVE-2023-53016 Référence CVE CVE-2023-53019 https://www.cve.org/CVERecord?id=CVE-2023-53019 Référence CVE CVE-2023-53023 https://www.cve.org/CVERecord?id=CVE-2023-53023 Référence CVE CVE-2023-53024 https://www.cve.org/CVERecord?id=CVE-2023-53024 Référence CVE CVE-2023-53025 https://www.cve.org/CVERecord?id=CVE-2023-53025 Référence CVE CVE-2023-53026 https://www.cve.org/CVERecord?id=

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
d3686d54c7902a303bd65d751226aa1647319863 < 893d45394dbe4b5cbf3723c19e2ccc8b93a6ac9b; d3686d54c7902a303bd65d751226aa1647319863 < 2fe58d977ee05da5bb89ef5dc4f5bf2dc15db46f; 2.6.37
Fixed
< 2.6.37; 6.1.9 ≤ 6.1.*; 6.2 ≤ *
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 27 Mar 2025 · Last source change 11 May 2026, 19:36 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-2023-59712
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.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
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-2023-53008 · cve.blacktree.nl