CVE-2026-46272

Description

In the Linux kernel, the following vulnerability has been resolved: coresight: tmc-etr: Fix race condition between sysfs and perf mode When trying to run perf and sysfs mode simultaneously, the WARN_ON() in tmc_etr_enable_hw() is triggered sometimes: WARNING: CPU: 42 PID: 3911571 at drivers/hwtracing/coresight/coresight-tmc-etr.c:1060 tmc_etr_enable_hw+0xc0/0xd8 [coresight_tmc] [..snip..] Call trace: tmc_etr_enable_hw+0xc0/0xd8 [coresight_tmc] (P) tmc_enable_etr_sink+0x11c/0x250 [coresight_tmc] (L) tmc_enable_etr_sink+0x11c/0x250 [coresight_tmc] coresight_enable_path+0x1c8/0x218 [coresight] coresight_enable_sysfs+0xa4/0x228 [coresight] enable_source_store+0x58/0xa8 [coresight] dev_attr_store+0x20/0x40 sysfs_kf_write+0x4c/0x68 kernfs_fop_write_iter+0x120/0x1b8 vfs_write+0x2c8/0x388 ksys_write+0x74/0x108 __arm64_sys_write+0x24/0x38 el0_svc_common.constprop.0+0x64/0x148 do_el0_svc+0x24/0x38 el0_svc+0x3c/0x130 el0t_64_sync_handler+0xc8/0xd0 el0t_64_sync+0x1ac/0x1b0 ---[ end trace 0000000000000000 ]--- Since the enablement of sysfs mode is separeted into two critical regions, one for sysfs buffer allocation and another for hardware enablement, it's possible to race with the perf mode. Fix this by double check whether the perf mode's been used before enabling the hardware in sysfs mode. mode: [sysfs mode] [perf mode] tmc_etr_get_sysfs_buffer() spin_lock(&drvdata->spinlock) [sysfs buffer allocation] spin_unlock(&drvdata->spinlock) spin_lock(&drvdata->spinlock) tmc_etr_enable_hw() drvdata->etr_buf = etr_perf->etr_buf spin_unlock(&drvdata->spinlock) spin_lock(&drvdata->spinlock) tmc_etr_enable_hw() WARN_ON(drvdata->etr_buf) // WARN sicne etr_buf initialized at the perf side spin_unlock(&drvdata->spinlock) With this fix, we retain the check for CS_MODE_PERF in get_etr_sysfs_buf. This ensures we verify whether the perf mode's already running before we actually allocate the buffer. Then we can save the time of allocating/freeing the sysfs buffer if race with the perf mode.

Overview

State: PUBLISHED
Assigner (CNA): Linux
CVSS severity: high
CVSS score: 6.9 / 10
CVSS vector: AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Effective score: 6.9 / 10 HIGH source: CNA overview
MSRC score: 3.9 / 10 LOW MS rating: Low
CWE(s): —
Reserved: 2026-05-13
Published: 2026-06-03 15:50 UTC
Last updated: 2026-06-03 15:50 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/46xxx/CVE-2026-46272.json
Linked Threat: CVE-2026-46272 — CVE-2026-46272

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-06-03 18:16:29 UTC
NVD last modified: 2026-07-22 20:10:00 UTC
NVD CVSS v3.1: 4.7 / 10 MEDIUM source: nvd@nist.gov
NVD CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitability subscore: 1.0 / 10
Impact subscore: 3.6 / 10
EPSS score: 0.0009 (probability of exploitation in next 30 days)
EPSS percentile: 0.48% vs all CVEs — higher = more likely to be exploited, as of 2026-08-01

NVD-assigned CWE(s): CWE-362 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-34134
Assigner: Linux
Published: Jun 3, 2026, 3:50:14 PM
Updated: Jun 3, 2026, 3:50:14 PM
EUVD base score: 0.0 / 10
EUVD-reported EPSS: 0.0900
Vendors: Linux
Products: Linux (296b01fd106e787d4463974a7f42d286a5df08cd <38a07194bbcddb18d77dad40ba9978d994c0b74c)

Linux (patch: 6.19.4)

Linux (296b01fd106e787d4463974a7f42d286a5df08cd <e6e43e82c79c97917cbe356c07e8a6f3f982ab53)

Linux (6.5)

Linux (patch: 6.18.14)

Linux (patch: 7.0)

Linux (patch: 0)

Linux (296b01fd106e787d4463974a7f42d286a5df08cd <6906aa70d4fc5900b954136e20e27c2be6d1acab)
Aliases: GHSA-v558-wf7v-xc9h

ENISA description: In the Linux kernel, the following vulnerability has been resolved: coresight: tmc-etr: Fix race condition between sysfs and perf mode When trying to run perf and sysfs mode simultaneously, the WARN_ON() in tmc_etr_enable_hw() is triggered sometimes: WARNING: CPU: 42 PID: 3911571 at drivers/hwtracing/coresight/coresight-tmc-etr.c:1060 tmc_etr_enable_hw+0xc0/0xd8 [coresight_tmc] [..snip..] Call trace: tmc_etr_enable_hw+0xc0/0xd8 [coresight_tmc] (P) tmc_enable_etr_sink+0x11c/0x250 [coresight_tmc] (L) tmc_enable_etr_sink+0x11c/0x250 [coresight_tmc] coresight_enable_path+0x1c8/0x218 [coresight] coresight_enable_sysfs+0xa4/0x228 [coresight] enable_source_store+0x58/0xa8 [coresight] dev_attr_store+0x20/0x40 sysfs_kf_write+0x4c/0x68 kernfs_fop_write_iter+0x120/0x1b8 vfs_write+0x2c8/0x388 ksys_write+0x74/0x108 __arm64_sys_write+0x24/0x38 el0_svc_common.constprop.0+0x64/0x148 do_el0_svc+0x24/0x38 el0_svc+0x3c/0x130 el0t_64_sync_handler+0xc8/0xd0 el0t_64_sync+0x1ac/0x1b0 ---[ end trace 0000000000000000 ]--- Since the enablement of sysfs mode is separeted into two critical regions, one for sysfs buffer allocation and another for hardware enablement, it's possible to race with the perf mode. Fix this by double check whether the perf mode's been used before enabling the hardware in sysfs mode. mode: [sysfs mode] [perf mode] tmc_etr_get_sysfs_buffer() spin_lock(&drvdata->spinlock) [sysfs buffer allocation] spin_unlock(&drvdata->spinlock) spin_lock(&drvdata->spinlock) tmc_etr_enable_hw() drvdata->etr_buf = etr_perf->etr_buf spin_unlock(&drvdata->spinlock) spin_lock(&drvdata->spinlock) tmc_etr_enable_hw() WARN_ON(drvdata->etr_buf) // WARN sicne etr_buf initialized at the perf side spin_unlock(&drvdata->spinlock) With this fix, we retain the check for CS_MODE_PERF in get_etr_sysfs_buf. This ensures we verify whether the perf mode's already running before we actually allocate the buffer. Then we can save the time of allocating/freeing the sysfs buffer if race with the perf mode.

EUVD references (3)

Microsoft Security Response Center MSRC

Microsoft's vendor-authoritative record from the Security Update Guide — its own CVSS score, impact, severity rating, exploit assessment, and KB-article fixes. Refreshed 2026-07-23 03:00 UTC (source: CVRF).

MS severity: Low
MS CVSS base score: 3.9 / 10 (temporal 3.9)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
Release: 2026-Jun

Affected products (2)

Vendor	Product	Versions	Platforms
Linux	Linux	`296b01fd106e787d4463974a7f42d286a5df08cd` (affected), `296b01fd106e787d4463974a7f42d286a5df08cd` (affected), `296b01fd106e787d4463974a7f42d286a5df08cd` (affected)	—
Linux	Linux	`6.5` (affected), `0` (unaffected), `6.18.14` (unaffected), `6.19.4` (unaffected), `7.0` (unaffected)	—

Affected products — CPE 2.3 (1) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor references (3)

References embedded in the original CVE record by the assigning CNA.

Web references (7)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

MSRC update guide: CVE-2026-46272 msrc
https://git.kernel.org/stable/c/6906aa70d4fc5900b954136e20e27c2be6d1acab tenable:git.kernel.org
https://git.kernel.org/stable/c/e6e43e82c79c97917cbe356c07e8a6f3f982ab53 tenable:git.kernel.org
https://git.kernel.org/stable/c/38a07194bbcddb18d77dad40ba9978d994c0b74c tenable:git.kernel.org
https://nvd.nist.gov/vuln/detail/CVE-2026-46272 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-46272 tenable:www.cve.org
https://www.first.org/epss/ tenable:www.first.org

NVD-tagged references (3)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://git.kernel.org/stable/c/38a07194bbcddb18d77dad40ba9978d994c0b74c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/6906aa70d4fc5900b954136e20e27c2be6d1acab 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/e6e43e82c79c97917cbe356c07e8a6f3f982ab53 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch

Remediations (17)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

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web:cyberpress.org

A critical vulnerability in the Hugging Face Transformers library has exposed millions of machine learning engineers and enterprise AI pipelines to silent remote code execution without ever setting trust_remote_code=True.

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Microsoft Patch Tuesday May 2026 - 120 Vulnerabilities Fixed, Including ...

web:cybersecuritynews.com

Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.

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GitHub - secureIT-project/CVEfixes: CVEfixes: Automated Collection of ...

web:github.com

CVEfixes: Automated Collection of Vulnerabilities and Their Fixes from Open-Source Software - secureIT-project/CVEfixes

2026-06-08 15:50 UTC
NVD - Home

web:nvd.nist.gov

The NVD is the U.S. government repository of standards based vulnerability management data represented using the Security Content Automation Protocol (SCAP). This data enables automation of vulnerability management, security measurement, and compliance. The NVD includes databases of security checklist references, security-related software flaws, product names, and impact metrics. For ...

2026-06-08 15:50 UTC
Security Update Guide - Microsoft

web:portal.msrc.microsoft.com

The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

2026-06-08 15:50 UTC
About the security content of iOS 26.2 and iPadOS 26.2

web:support.apple.com

This document describes the security content of iOS 26.2 and iPadOS 26.2.

2026-06-08 15:50 UTC
Landing Page | ServiceNow Common Vulnerabilities & Exposures (CVE ...

web:support.servicenow.com

Overview The advisories below document publicly disclosed Common Vulnerabilities and Exposures ( CVEs ) in the Now Platform by ServiceNow. Because ServiceNow uses various methods to communicate vulnerability information, patches, and other fixes, customers should review family, security patch , and hotfix release notes, which are available at https://docs.servicenow.com, for a complete list of ...

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CVE: Common Vulnerabilities and Exposures

web:www.cve.org

At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures

2026-06-08 15:50 UTC
Oracle Critical Security Patch Update Advisory - May 2026

web:www.oracle.com

This Critical Security Patch Update contains 35 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Security Patch Update and other Oracle Software Security Assurance activities is located at May 2026 Critical Security Patch Update: Executive Summary and Analysis.

2026-06-08 15:50 UTC
Patch Tuesday June 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

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Category: Patch Tuesday | Qualys

web:blog.qualys.com

Microsoft and Adobe Patch Tuesday, April 2026 Security Update Review Posted in Patch Tuesday, Vulnerabilities and Threat Research 7 Diksha Ojha March 11, 2026 - 8 min read

2026-06-19 02:33 UTC
Nvd - Cve-2026-46872

web:nvd.nist.gov

An official website of the United States government Here's how you know

2026-06-19 02:33 UTC
Oracle CPU April 2026: Delayed RUs & First Analysis ¶

web:oradba.ch

On April 21, 2026 , Oracle released the Critical Patch Update (CPU) for April 2026 — 481 new security fixes across the entire Oracle product stack. For Oracle Database, this means another round of mandatory patching. What makes this quarter unusual: several key Release Updates, including 19.31 and 23.26.2, were not available on release day and are delayed by up to a week or more.

2026-06-19 02:33 UTC
March 13, 2026—Hotpatch KB5084597 (OS Builds 26200.7982 and 26100.7982 ...

web:support.microsoft.com

The following summary outlines key issues addressed by this update. The bold text within the brackets indicates the item or area of the change. [Networking] Fixed: This update addresses a security issue in the Windows Routing and Remote Access Service (RRAS) management tool. If you connect to a malicious remote server, an attacker could disrupt the tool or run code on your device. For more ...

2026-06-19 02:33 UTC
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web:www.computerworld.com

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web:www.oracle.com

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2026-06-19 02:33 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-46272.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwtracing/coresight/coresight-tmc-etr.c"
          ],
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              "versionType": "git"
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
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          "vendor": "Linux",
          "versions": [
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            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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            },
            {
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              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
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                  "vulnerable": true
                },
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.5",
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                }
              ],
              "negate": false,
              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncoresight: tmc-etr: Fix race condition between sysfs and perf mode\n\nWhen trying to run perf and sysfs mode simultaneously, the WARN_ON()\nin tmc_etr_enable_hw() is triggered sometimes:\n\n WARNING: CPU: 42 PID: 3911571 at drivers/hwtracing/coresight/coresight-tmc-etr.c:1060 tmc_etr_enable_hw+0xc0/0xd8 [coresight_tmc]\n [..snip..]\n Call trace:\n  tmc_etr_enable_hw+0xc0/0xd8 [coresight_tmc] (P)\n  tmc_enable_etr_sink+0x11c/0x250 [coresight_tmc] (L)\n  tmc_enable_etr_sink+0x11c/0x250 [coresight_tmc]\n  coresight_enable_path+0x1c8/0x218 [coresight]\n  coresight_enable_sysfs+0xa4/0x228 [coresight]\n  enable_source_store+0x58/0xa8 [coresight]\n  dev_attr_store+0x20/0x40\n  sysfs_kf_write+0x4c/0x68\n  kernfs_fop_write_iter+0x120/0x1b8\n  vfs_write+0x2c8/0x388\n  ksys_write+0x74/0x108\n  __arm64_sys_write+0x24/0x38\n  el0_svc_common.constprop.0+0x64/0x148\n  do_el0_svc+0x24/0x38\n  el0_svc+0x3c/0x130\n  el0t_64_sync_handler+0xc8/0xd0\n  el0t_64_sync+0x1ac/0x1b0\n ---[ end trace 0000000000000000 ]---\n\nSince the enablement of sysfs mode is separeted into two critical regions,\none for sysfs buffer allocation and another for hardware enablement, it's\npossible to race with the perf mode. Fix this by double check whether\nthe perf mode's been used before enabling the hardware in sysfs mode.\n\n mode:\n   [sysfs mode]                   [perf mode]\n   tmc_etr_get_sysfs_buffer()\n     spin_lock(&drvdata->spinlock)\n     [sysfs buffer allocation]\n     spin_unlock(&drvdata->spinlock)\n                                  spin_lock(&drvdata->spinlock)\n                                  tmc_etr_enable_hw()\n                                    drvdata->etr_buf = etr_perf->etr_buf\n                                  spin_unlock(&drvdata->spinlock)\n   spin_lock(&drvdata->spinlock)\n   tmc_etr_enable_hw()\n     WARN_ON(drvdata->etr_buf) // WARN sicne etr_buf initialized at\n                                  the perf side\n   spin_unlock(&drvdata->spinlock)\n\nWith this fix, we retain the check for CS_MODE_PERF in get_etr_sysfs_buf.\nThis ensures we verify whether the perf mode's already running before we\nactually allocate the buffer. Then we can save the time of\nallocating/freeing the sysfs buffer if race with the perf mode."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-03T15:50:14.618Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/38a07194bbcddb18d77dad40ba9978d994c0b74c"
        },
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          "url": "https://git.kernel.org/stable/c/6906aa70d4fc5900b954136e20e27c2be6d1acab"
        },
        {
          "url": "https://git.kernel.org/stable/c/e6e43e82c79c97917cbe356c07e8a6f3f982ab53"
        }
      ],
      "title": "coresight: tmc-etr: Fix race condition between sysfs and perf mode",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46272",
    "datePublished": "2026-06-03T15:50:14.618Z",
    "dateReserved": "2026-05-13T15:03:33.109Z",
    "dateUpdated": "2026-06-03T15:50:14.618Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}