BlackTreeIndependent security intelligence

Full vulnerability report · 2025

CVE-2024-53687High confidence

riscv: Fix IPIs usage in kfence_protect_page()

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.

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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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 10 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-2024-52030

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

What, why and how

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix IPIs usage in kfence_protect_page() flush_tlb_kernel_range() may use IPIs to flush the TLBs of all the cores, which triggers the following warning when the irqs are disabled: [ 3.455330] WARNING: CPU: 1 PID: 0 at kernel/smp.c:815 smp_call_function_many_cond+0x452/0x520 [ 3.456647] Modules linked in: [ 3.457218] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.12.0-rc7-00010-g91d3de7240b8 #1 [ 3.457416] Hardware name: QEMU QEMU Virtual Machine, BIOS [ 3.457633] epc : smp_call_function_many_cond+0x452/0x520 [ 3.457736] ra : on_each_cpu_cond_mask+0x1e/0x30 [ 3.457786] epc : ffffffff800b669a ra : ffffffff800b67c2 sp : ff2000000000bb50 [ 3.457824] gp : ffffffff815212b8 tp : ff6000008014f080 t0 : 000000000000003f [ 3.457859] t1 : ffffffff815221e0 t2 : 000000000000000f s0 : ff2000000000bc10 [ 3.457920] s1 : 0000000000000040 a0 : ffffffff815221e0 a1 : 0000000000000001 [ 3.457953] a2 : 0000000000010000 a3 : 0000000000000003 a4 : 0000000000000000 [ 3.458006] a5 : 0000000000000000 a6 : ffffffffffffffff a7 : 0000000000000000 [ 3.458042] s2 : ffffffff815223be s3 : 00fffffffffff000 s4 : ff600001ffe38fc0 [ 3.458076] s5 : ff600001ff950d00 s6 : 0000000200000120 s7 : 0000000000000001 [ 3.458109] s8 : 0000000000000001 s9 : ff60000080841ef0 s10: 0000000000000001 [ 3.458141] s11: ffffffff81524812 t3 : 0000000000000001 t4 : ff60000080092bc0 [ 3.458172] t5 : 0000000000000000 t6 : ff200000000236d0 [ 3.458203] status: 0000000200000100 badaddr: ffffffff800b669a cause: 0000000000000003 [ 3.458373] [<ffffffff800b669a>] smp_call_function_many_cond+0x452/0x520 [ 3.458593] [<ffffffff800b67c2>] on_each_cpu_cond_mask+0x1e/0x30 [ 3.458625] [<ffffffff8000e4ca>] __flush_tlb_range+0x118/0x1ca [ 3.458656] [<ffffffff8000e6b2>] flush_tlb_kernel_range+0x1e/0x26 [ 3.458683] [<ffffffff801ea56a>] kfence_protect+0xc0/0xce [ 3.458717] [<ffffffff801e9456>] kfence_guarded_free+0xc6/0x1c0 [ 3.458742] [<ffffffff801e9d6c>] __kfence_free+0x62/0xc6 [ 3.458764] [<ffffffff801c57d8>] kfree+0x106/0x32c [ 3.458786] [<ffffffff80588cf2>] detach_buf_split+0x188/0x1a8 [ 3.458816] [<ffffffff8058708c>] virtqueue_get_buf_ctx+0xb6/0x1f6 [ 3.458839] [<ffffffff805871da>] virtqueue_get_buf+0xe/0x16 [ 3.458880] [<ffffffff80613d6a>] virtblk_done+0x5c/0xe2 [ 3.458908] [<ffffffff8058766e>] vring_interrupt+0x6a/0x74 [ 3.458930] [<ffffffff800747d8>] __handle_irq_event_percpu+0x7c/0xe2 [ 3.458956] [<ffffffff800748f0>] handle_irq_event+0x3c/0x86 [ 3.458978] [<ffffffff800786cc>] handle_simple_irq+0x9e/0xbe [ 3.459004] [<ffffffff80073934>] generic_handle_domain_irq+0x1c/0x2a [ 3.459027] [<ffffffff804bf87c>] imsic_handle_irq+0xba/0x120 [ 3.459056] [<ffffffff80073934>] generic_handle_domain_irq+0x1c/0x2a [ 3.459080] [<ffffffff804bdb76>] riscv_intc_aia_irq+0x24/0x34 [ 3.459103] [<ffffffff809d0452>] handle_riscv_irq+0x2e/0x4c [ 3.459133] [<ffffffff809d923e>] call_on_irq_stack+0x32/0x40 So only flush the local TLB and let the lazy kfence page fault handling deal with the faults which could happen when a core has an old protected pte version cached in its TLB. That leads to potential inaccuracies which can be tolerated when using kfence.

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: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.

Official authority intelligence

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

ENISA EUVD · EUVD-2024-52030Official EUVD mapping

0 linked advisory records.

Official EUVD record

BSI · German · WID-SEC-W-2025-0047Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein lokaler Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen und weitere nicht spezifizierte Angriffe zu starten.

Official advisory

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

d?id=CVE-2024-53210 Référence CVE CVE-2024-53216 https://www.cve.org/CVERecord?id=CVE-2024-53216 Référence CVE CVE-2024-53219 https://www.cve.org/CVERecord?id=CVE-2024-53219 Référence CVE CVE-2024-53220 https://www.cve.org/CVERecord?id=CVE-2024-53220 Référence CVE CVE-2024-53221 https://www.cve.org/CVERecord?id=CVE-2024-53221 Référence CVE CVE-2024-53224 https://www.cve.org/CVERecord?id=CVE-2024-53224 Référence CVE CVE-2024-53234 https://www.cve.org/CVERecord?id=CVE-2024-53234 Référence CVE CVE-2024-53240 https://www.cve.org/CVERecord?id=CVE-2024-53240 Référence CVE CVE-2024-53241 https://www.cve.org/CVERecord?id=CVE-2024-53241 Référence CVE CVE-2024-53687 https://www.cve.org/CVERecord?id=CVE-2024-53687 Référence CVE CVE-2024-54456 https://www.cve.org/CVERecord?id=CVE-2024-54456 Référence CVE CVE-2024-54683 https://www.cve.org/CVERecord?id=CVE-2024-54683 Référence CVE CVE-2024-5535 https://www.cve.org/CVERecord?id=CVE-2024-5535 Référence CVE CVE-2024-5569 https://www.cve.org/CVERecord?id=CVE-2024-5569 Référence CVE CVE-2024-56180 https://www.cve.org/CVERecord?id=CVE-2024-56180 Référence CVE CVE-2024-56201 https://www.cve.org/CVERecord?id=CVE-2024-56201 Référence CVE CVE-2024-56326 https://www.cve.org/CVERecord?id=CVE-2024-56326 Référence CVE CVE-2024-56368 https://www.cve.org/CVERecord?id=CVE-

Official advisory

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

Official advisory

CERT-FR · French · CERTFR-2025-AVI-0899Multiples vulnérabilités dans les produits Microsoft

CVE-2025-39981 du 16 octobre 2025 Bulletin de sécurité Microsoft CVE-2025-39982 du 16 octobre 2025 Bulletin de sécurité Microsoft CVE-2025-39985 du 16 octobre 2025 Bulletin de sécurité Microsoft CVE-2025-39987 du 16 octobre 2025 Bulletin de sécurité Microsoft CVE-2025-39990 du 16 octobre 2025 Bulletin de sécurité Microsoft CVE-2025-39994 du 16 octobre 2025 Bulletin de sécurité Microsoft CVE-2025-39998 du 16 octobre 2025 Bulletin de sécurité Microsoft CVE-2022-49124 du 17 octobre 2025 Bulletin de sécurité Microsoft CVE-2022-49133 du 17 octobre 2025 Bulletin de sécurité Microsoft CVE-2024-49568 du 17 octobre 2025 Bulletin de sécurité Microsoft CVE-2024-53687 du 17 octobre 2025 Bulletin de sécurité Microsoft CVE-2024-56709 du 17 octobre 2025 Bulletin de sécurité Microsoft CVE-2025-21629 du 18 octobre 2025 Bulletin de sécurité Microsoft CVE-2025-21645 du 18 octobre 2025 Une gestion de version détaillée se trouve à la fin de ce document. Risques Atteinte à la confidentialité des données Contournement de la politique de sécurité Déni de service Exécution de code arbitraire à distance Non spécifié par l'éditeur Systèmes affectés azl3 binutils 2.41-7 azl3 kernel 6.6.104.2-1 azl3 kernel 6.6.96.2-2 azl3 openssh 9.8p1-4 azl3 python3 3.12.9-4 versions antérieures à 3.12.9-5 azl3 pytorch 2.2.2-7 azl3 qemu

Official advisory

CERT-FR · French · CERTFR-2025-AVI-0254Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2024-52319 Référence CVE CVE-2024-52332 https://www.cve.org/CVERecord?id=CVE-2024-52332 Référence CVE CVE-2024-53104 https://www.cve.org/CVERecord?id=CVE-2024-53104 Référence CVE CVE-2024-53140 https://www.cve.org/CVERecord?id=CVE-2024-53140 Référence CVE CVE-2024-53179 https://www.cve.org/CVERecord?id=CVE-2024-53179 Référence CVE CVE-2024-53680 https://www.cve.org/CVERecord?id=CVE-2024-53680 Référence CVE CVE-2024-53681 https://www.cve.org/CVERecord?id=CVE-2024-53681 Référence CVE CVE-2024-53682 https://www.cve.org/CVERecord?id=CVE-2024-53682 Référence CVE CVE-2024-53685 https://www.cve.org/CVERecord?id=CVE-2024-53685 Référence CVE CVE-2024-53687 https://www.cve.org/CVERecord?id=CVE-2024-53687 Référence CVE CVE-2024-53690 https://www.cve.org/CVERecord?id=CVE-2024-53690 Référence CVE CVE-2024-54191 https://www.cve.org/CVERecord?id=CVE-2024-54191 Référence CVE CVE-2024-54193 https://www.cve.org/CVERecord?id=CVE-2024-54193 Référence CVE CVE-2024-54455 https://www.cve.org/CVERecord?id=CVE-2024-54455 Référence CVE CVE-2024-54460 https://www.cve.org/CVERecord?id=CVE-2024-54460 Référence CVE CVE-2024-54680 https://www.cve.org/CVERecord?id=CVE-2024-54680 Référence CVE CVE-2024-54683 https://www.cve.org/CVERecord?id=CVE-2024-54683 Référence CVE CVE-2024-55639 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: 47513f243b452a5e21180dcf3d6ac1c57e1781a6 < 6f796a6a396d6f963f2cc8f5edd7dfba2cca097f; 47513f243b452a5e21180dcf3d6ac1c57e1781a6 < 3abfc4130c4222099c69d023fed97f1180a8ad7b; 47513f243b452a5e21180dcf3d6ac1c57e1781a6 < b3431a8bb336cece8adc452437befa7d4534b2fd; 5.14
Fixed: < 5.14; 6.6.67 ≤ 6.6.*; 6.12.6 ≤ 6.12.*; 6.13 ≤ *
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 11 Jan 2025 · Last source change 11 May 2026, 20:53 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-2024-52030

Product sourceCNA

Remediation sourceCVE/CNA references

CWE sourceUnavailable

NVD statusNVD enriched

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.

2025-01-11CVE published

2026-05-11Fixed release or patch reference recorded

ENISA EUVD · EUVD-2024-52030↗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.

riscv: Fix IPIs usage in kfence_protect_page()

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

EUVD-2024-52030

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.