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Full vulnerability report · 2024
CVE-2024-27006High confidence

thermal/debugfs: Add missing count increment to thermal_debug_tz_trip_up()

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.

13 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-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-intelAffected, 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-oem-6.8Affected, 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-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-2024-24268

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: thermal/debugfs: Add missing count increment to thermal_debug_tz_trip_up() The count field in struct trip_stats, representing the number of times the zone temperature was above the trip point, needs to be incremented in thermal_debug_tz_trip_up(), for two reasons. First, if a trip point is crossed on the way up for the first time, thermal_debug_update_temp() called from update_temperature() does not see it because it has not been added to trips_crossed[] array in the thermal zone's struct tz_debugfs object yet. Therefore, when thermal_debug_tz_trip_up() is called after that, the trip point's count value is 0, and the attempt to divide by it during the average temperature computation leads to a divide error which causes the kernel to crash. Setting the count to 1 before the division by incrementing it fixes this problem. Second, if a trip point is crossed on the way up, but it has been crossed on the way up already before, its count value needs to be incremented to make a record of the fact that the zone temperature is above the trip now. Without doing that, if the mitigations applied after crossing the trip cause the zone temperature to drop below its threshold, the count will not be updated for this episode at all and the average temperature in the trip statistics record will be somewhat higher than it should be. Cc :6.8+ <stable@vger.kernel.org> # 6.8+

What

In the Linux kernel, the following vulnerability has been resolved: thermal/debugfs: Add missing count increment to thermal_debug_tz_trip_up() The count field in struct trip_stats, representing the number of times the zone temperature was above the trip point, needs to be incremented in thermal_debug_tz_trip_up(), for two reasons. First, if a trip point is crossed on the way up for the first time, thermal_debug_update_temp() called from update_temperature() does not see it because it has not been added to trips_crossed[] array in the thermal zone's struct tz_debugfs object yet. Therefore, when thermal_debug_tz_trip_up() is called after that, the trip point's count value is 0, and the attempt to divide by it during the average temperature computation leads to a divide error which causes the kernel to crash. Setting the count to 1 before the division by incrementing it fixes this problem. Second, if a trip point is crossed on the way up, but it has been crossed on the way up already before, its count value needs to be incremented to make a record of the fact that the zone temperature is above the trip now. Without doing that, if the mitigations applied after crossing the trip cause the zone temperature to drop below its threshold, the count will not be updated for this episode at all and the average temperature in the trip statistics record will be somewhat higher than it should be. Cc :6.8+ <stable@vger.kernel.org> # 6.8+

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 disrupt the affected service.

What

In the Linux kernel, the following vulnerability has been resolved: thermal/debugfs: Add missing count increment to thermal_debug_tz_trip_up() The count field in struct trip_stats, representing the number of times the zone temperature was above the trip point, needs to be incremented in thermal_debug_tz_trip_up(), for two reasons. First, if a trip point is crossed on the way up for the first time, thermal_debug_update_temp() called from update_temperature() does not see it because it has not been added to trips_crossed[] array in the thermal zone's struct tz_debugfs object yet. Therefore, when thermal_debug_tz_trip_up() is called after that, the trip point's count value is 0, and the attempt to divide by it during the average temperature computation leads to a divide error which causes the kernel to crash. Setting the count to 1 before the division by incrementing it fixes this problem. Second, if a trip point is crossed on the way up, but it has been crossed on the way up already before, its count value needs to be incremented to make a record of the fact that the zone temperature is above the trip now. Without doing that, if the mitigations applied after crossing the trip cause the zone temperature to drop below its threshold, the count will not be updated for this episode at all and the average temperature in the trip statistics record will be somewhat higher than it should be. Cc :6.8+ <stable@vger.kernel.org> # 6.8+

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 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 → vulnerable operation → 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.
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: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 service
A

Official authority intelligence

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

BSI · German · WID-SEC-2024-1008Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder sonstige Auswirkungen zu verursachen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20240508Security Bulletin 08 May 2024

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 08 May 2024, published on 8 May 2024. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0645Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2024-26997 Référence CVE CVE-2024-26998 https://www.cve.org/CVERecord?id=CVE-2024-26998 Référence CVE CVE-2024-26999 https://www.cve.org/CVERecord?id=CVE-2024-26999 Référence CVE CVE-2024-27000 https://www.cve.org/CVERecord?id=CVE-2024-27000 Référence CVE CVE-2024-27001 https://www.cve.org/CVERecord?id=CVE-2024-27001 Référence CVE CVE-2024-27002 https://www.cve.org/CVERecord?id=CVE-2024-27002 Référence CVE CVE-2024-27003 https://www.cve.org/CVERecord?id=CVE-2024-27003 Référence CVE CVE-2024-27004 https://www.cve.org/CVERecord?id=CVE-2024-27004 Référence CVE CVE-2024-27005 https://www.cve.org/CVERecord?id=CVE-2024-27005 Référence CVE CVE-2024-27006 https://www.cve.org/CVERecord?id=CVE-2024-27006 Référence CVE CVE-2024-27007 https://www.cve.org/CVERecord?id=CVE-2024-27007 Référence CVE CVE-2024-27008 https://www.cve.org/CVERecord?id=CVE-2024-27008 Référence CVE CVE-2024-27009 https://www.cve.org/CVERecord?id=CVE-2024-27009 Référence CVE CVE-2024-27010 https://www.cve.org/CVERecord?id=CVE-2024-27010 Référence CVE CVE-2024-27011 https://www.cve.org/CVERecord?id=CVE-2024-27011 Référence CVE CVE-2024-27012 https://www.cve.org/CVERecord?id=CVE-2024-27012 Référence CVE CVE-2024-27013 https://www.cve.org/CVERecord?id=CVE-2024-27013 Référence CVE CVE-2024-27014 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0633Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2024-26997 Référence CVE CVE-2024-26998 https://www.cve.org/CVERecord?id=CVE-2024-26998 Référence CVE CVE-2024-26999 https://www.cve.org/CVERecord?id=CVE-2024-26999 Référence CVE CVE-2024-27000 https://www.cve.org/CVERecord?id=CVE-2024-27000 Référence CVE CVE-2024-27001 https://www.cve.org/CVERecord?id=CVE-2024-27001 Référence CVE CVE-2024-27002 https://www.cve.org/CVERecord?id=CVE-2024-27002 Référence CVE CVE-2024-27003 https://www.cve.org/CVERecord?id=CVE-2024-27003 Référence CVE CVE-2024-27004 https://www.cve.org/CVERecord?id=CVE-2024-27004 Référence CVE CVE-2024-27005 https://www.cve.org/CVERecord?id=CVE-2024-27005 Référence CVE CVE-2024-27006 https://www.cve.org/CVERecord?id=CVE-2024-27006 Référence CVE CVE-2024-27007 https://www.cve.org/CVERecord?id=CVE-2024-27007 Référence CVE CVE-2024-27008 https://www.cve.org/CVERecord?id=CVE-2024-27008 Référence CVE CVE-2024-27009 https://www.cve.org/CVERecord?id=CVE-2024-27009 Référence CVE CVE-2024-27010 https://www.cve.org/CVERecord?id=CVE-2024-27010 Référence CVE CVE-2024-27011 https://www.cve.org/CVERecord?id=CVE-2024-27011 Référence CVE CVE-2024-27012 https://www.cve.org/CVERecord?id=CVE-2024-27012 Référence CVE CVE-2024-27013 https://www.cve.org/CVERecord?id=CVE-2024-27013 Référence CVE CVE-2024-27014 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0611Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2024-26997 Référence CVE CVE-2024-26998 https://www.cve.org/CVERecord?id=CVE-2024-26998 Référence CVE CVE-2024-26999 https://www.cve.org/CVERecord?id=CVE-2024-26999 Référence CVE CVE-2024-27000 https://www.cve.org/CVERecord?id=CVE-2024-27000 Référence CVE CVE-2024-27001 https://www.cve.org/CVERecord?id=CVE-2024-27001 Référence CVE CVE-2024-27002 https://www.cve.org/CVERecord?id=CVE-2024-27002 Référence CVE CVE-2024-27003 https://www.cve.org/CVERecord?id=CVE-2024-27003 Référence CVE CVE-2024-27004 https://www.cve.org/CVERecord?id=CVE-2024-27004 Référence CVE CVE-2024-27005 https://www.cve.org/CVERecord?id=CVE-2024-27005 Référence CVE CVE-2024-27006 https://www.cve.org/CVERecord?id=CVE-2024-27006 Référence CVE CVE-2024-27007 https://www.cve.org/CVERecord?id=CVE-2024-27007 Référence CVE CVE-2024-27008 https://www.cve.org/CVERecord?id=CVE-2024-27008 Référence CVE CVE-2024-27009 https://www.cve.org/CVERecord?id=CVE-2024-27009 Référence CVE CVE-2024-27010 https://www.cve.org/CVERecord?id=CVE-2024-27010 Référence CVE CVE-2024-27011 https://www.cve.org/CVERecord?id=CVE-2024-27011 Référence CVE CVE-2024-27012 https://www.cve.org/CVERecord?id=CVE-2024-27012 Référence CVE CVE-2024-27013 https://www.cve.org/CVERecord?id=CVE-2024-27013 Référence CVE CVE-2024-27014 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2024-028012Linux の Linux Kernel における脆弱性

Linux の Linux Kernel には、不特定の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: 7ef01f228c9f54c6260319858be138a8a7e9e704 < 9c8215d32e730b597c809a9d2090bf8ec1b79fcf, 7ef01f228c9f54c6260319858be138a8a7e9e704 < b552f63cd43735048bbe9bfbb7a9dcfce166fbdd, 6.8
Fixed
Linux: < 6.8, 6.8.8 ≤ 6.8.*, 6.9 ≤ *
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 1 May 2024 · Last source change 11 May 2026, 20:08 UTC · CWE not yet assigned

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-2024-24268
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceUnavailable
NVD statusNVD modified after enrichment

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.

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-2024-27006 · cve.blacktree.nl