CVE-2026-46272

MEDIUMNVD 4.74.7—
EchelonGraph scoreMEDIUM confidence

Score 4.7 from GitHub Security Advisory published 2026-06-03. NVD baseline CVSS 4.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
4.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.7Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
4.7
EG Score
4.7(medium)
EPSS
0.5%
KEV
Not listed

Published

June 3, 2026

Last Modified

June 9, 2026

Advisory Details (3)

Auto-updated Jun 15, 2026
No patch confirmed yet.
generic

coresight: tmc-etr: Fix race condition between sysfs and perf mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e6e43e82c79c97917cbe356c07e8a6f3f982ab53
generic

coresight: tmc-etr: Fix race condition between sysfs and perf mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6906aa70d4fc5900b954136e20e27c2be6d1acab
generic

coresight: tmc-etr: Fix race condition between sysfs and perf mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/38a07194bbcddb18d77dad40ba9978d994c0b74c

Vendor Advisories for CVE-2026-46272(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 64× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-04 06:31 UTCEPSS rescore
  3. 2026-07-03 19:45 UTCEG score recompute
  4. 2026-07-03 19:45 UTCGHSA enrichment
  5. 2026-07-01 23:22 UTCEG score recompute
  6. 2026-07-01 23:22 UTCGHSA enrichment
  7. 2026-06-30 21:56 UTCEG score recompute
  8. 2026-06-30 21:56 UTCGHSA enrichment
  9. 2026-06-29 10:49 UTCEG score recompute
  10. 2026-06-29 10:49 UTCGHSA enrichment
  11. 2026-06-28 14:07 UTCEPSS rescore
  12. 2026-06-28 04:56 UTCEPSS rescore
  13. 2026-06-28 04:56 UTCEPSS rescore
  14. 2026-06-28 02:41 UTCEG score recompute
  15. 2026-06-28 02:41 UTCGHSA enrichment
  16. 2026-06-27 01:18 UTCEG score recompute
  17. 2026-06-27 01:18 UTCGHSA enrichment
  18. 2026-06-25 23:43 UTCEG score recompute
  19. 2026-06-25 23:43 UTCGHSA enrichment
  20. 2026-06-24 22:20 UTCEG score recompute
  21. 2026-06-24 22:20 UTCGHSA enrichment
  22. 2026-06-23 19:02 UTCEG score recompute
  23. 2026-06-23 19:02 UTCGHSA enrichment
  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 14:56 UTCEPSS rescore
Show 47 more
  1. 2026-06-21 01:59 UTCEPSS rescore
  2. 2026-06-21 01:59 UTCEPSS rescore
  3. 2026-06-19 23:51 UTCEG score recompute
  4. 2026-06-19 23:51 UTCGHSA enrichment
  5. 2026-06-19 19:26 UTCEPSS rescore
  6. 2026-06-19 19:26 UTCEPSS rescore
  7. 2026-06-18 21:32 UTCEG score recompute
  8. 2026-06-18 21:32 UTCGHSA enrichment
  9. 2026-06-17 17:53 UTCEPSS rescore
  10. 2026-06-17 17:27 UTCEG score recompute
  11. 2026-06-17 17:27 UTCGHSA enrichment
  12. 2026-06-16 17:52 UTCEPSS rescore
  13. 2026-06-16 14:23 UTCEG score recompute
  14. 2026-06-16 14:23 UTCGHSA enrichment
  15. 2026-06-15 17:49 UTCEPSS rescore
  16. 2026-06-15 12:57 UTCEG score recompute
  17. 2026-06-15 12:57 UTCGHSA enrichment
  18. 2026-06-14 11:34 UTCEG score recompute
  19. 2026-06-14 11:34 UTCGHSA enrichment
  20. 2026-06-13 23:00 UTCEPSS rescore
  21. 2026-06-13 10:11 UTCEG score recompute
  22. 2026-06-13 10:11 UTCGHSA enrichment
  23. 2026-06-12 23:12 UTCEPSS rescore
  24. 2026-06-12 23:12 UTCEPSS rescore
  25. 2026-06-12 08:47 UTCEG score recompute
  26. 2026-06-12 08:47 UTCGHSA enrichment
  27. 2026-06-11 14:00 UTCEPSS rescore
  28. 2026-06-11 07:24 UTCEG score recompute
  29. 2026-06-11 07:24 UTCGHSA enrichment
  30. 2026-06-10 22:18 UTCEPSS rescore
  31. 2026-06-10 13:22 UTCEPSS rescore
  32. 2026-06-10 13:22 UTCEPSS rescore
  33. 2026-06-10 06:01 UTCEG score recompute▲ 4.70
  34. 2026-06-10 06:01 UTCGHSA enrichment
  35. 2026-06-09 21:17 UTCNVD updateCVSS v3 → 4.7 · severity → MEDIUM
  36. 2026-06-08 14:17 UTCEPSS rescore
  37. 2026-06-08 14:17 UTCEPSS rescore
  38. 2026-06-07 15:25 UTCEPSS rescore
  39. 2026-06-07 15:25 UTCEPSS rescore
  40. 2026-06-06 23:48 UTCEG score recompute
  41. 2026-06-06 23:48 UTCGHSA enrichment
  42. 2026-06-06 13:47 UTCEPSS rescore
  43. 2026-06-06 13:47 UTCEPSS rescore
  44. 2026-06-05 22:47 UTCEPSS rescore
  45. 2026-06-05 06:10 UTCEPSS rescore
  46. 2026-06-05 06:10 UTCEPSS rescore
  47. 2026-06-03 17:35 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-46272?
CVE-2026-46272 is a medium vulnerability published on June 3, 2026. 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 tmcetrenable_hw() is triggered sometimes: WARNING: CPU: 42 PID: 3911571 at…
When was CVE-2026-46272 disclosed?
CVE-2026-46272 was first published in the National Vulnerability Database on June 3, 2026, with the most recent update on June 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46272 actively exploited?
CVE-2026-46272 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46272?
CVE-2026-46272 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2026-46272?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46272, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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