CVE-2026-53210

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-25. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

tee: shm: fix shm leak in register_shm_helper()

register_shm_helper() allocates shm before calling iov_iter_npages(). If iov_iter_npages() returns 0, the function jumps to err_ctx_put and leaks shm.

This can be triggered by TEE_IOC_SHM_REGISTER with struct tee_ioctl_shm_register_data where length is 0.

Jump to err_free_shm instead.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

June 25, 2026

Last Modified

July 2, 2026

Advisory Details (4)

Auto-updated Jul 3, 2026
No patch confirmed yet.
generic

tee: shm: fix shm leak in register_shm_helper() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dbf779db927414f5b37c1f666013e9b48a88cfde
generic

tee: shm: fix shm leak in register_shm_helper() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c10c9c48b2903f41ed4c532043b0576e86228236
generic

tee: shm: fix shm leak in register_shm_helper() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4277759906b44d923a38c8f59f5576501b187b0d
generic

tee: shm: fix shm leak in register_shm_helper() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/26682f5efc276e3ad96d102019472bfbf03833b2

Vendor Advisories for CVE-2026-53210(1)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-31.31) @ resolute2026-09-18ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-18ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1018.18~24.04.1) @ noble2026-09-18ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (145 versions)7.0.13-1—

Weakness Classification(1)

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

All Vendor Advisories

(4)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 40× 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.

Showing the most recent 100 of 173 total refreshes for this CVE.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 07:34 UTCEG score recompute
  4. 2026-09-18 07:34 UTCVendor advisory
  5. 2026-09-18 07:34 UTCGHSA enrichment
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-14 01:25 UTCEG score recompute
  9. 2026-09-14 01:25 UTCVendor advisory
  10. 2026-09-14 01:25 UTCGHSA enrichment
  11. 2026-09-13 16:47 UTCEPSS rescore
  12. 2026-09-12 15:57 UTCEG score recompute
  13. 2026-09-12 15:57 UTCVendor advisory
  14. 2026-09-12 15:57 UTCGHSA enrichment
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-10 09:35 UTCEPSS rescore
  17. 2026-09-08 22:01 UTCEPSS rescore
  18. 2026-09-07 16:01 UTCEPSS rescore
  19. 2026-09-06 13:47 UTCEPSS rescore
  20. 2026-09-04 05:06 UTCEPSS rescore
  21. 2026-09-02 14:12 UTCEPSS rescore
  22. 2026-09-01 13:54 UTCEPSS rescore
  23. 2026-09-01 04:40 UTCEPSS rescore
  24. 2026-08-30 19:38 UTCEG score recompute
  25. 2026-08-30 19:38 UTCGHSA enrichment
Show 75 more
  1. 2026-08-30 19:17 UTCEPSS rescore
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-28 21:41 UTCEPSS rescore
  4. 2026-08-27 23:59 UTCEG score recompute
  5. 2026-08-27 23:59 UTCGHSA enrichment
  6. 2026-08-27 14:25 UTCEPSS rescore
  7. 2026-08-26 14:46 UTCEPSS rescore
  8. 2026-08-25 13:49 UTCEPSS rescore
  9. 2026-08-24 13:14 UTCEG score recompute
  10. 2026-08-24 13:14 UTCGHSA enrichment
  11. 2026-08-23 10:29 UTCEG score recompute
  12. 2026-08-23 10:29 UTCGHSA enrichment
  13. 2026-08-23 00:19 UTCEPSS rescore
  14. 2026-08-22 10:43 UTCEG score recompute
  15. 2026-08-22 10:43 UTCGHSA enrichment
  16. 2026-08-21 23:49 UTCEPSS rescore
  17. 2026-08-21 07:14 UTCEG score recompute
  18. 2026-08-21 07:14 UTCGHSA enrichment
  19. 2026-08-20 22:55 UTCEPSS rescore
  20. 2026-08-20 07:09 UTCEG score recompute
  21. 2026-08-20 07:09 UTCGHSA enrichment
  22. 2026-08-19 17:04 UTCEPSS rescore
  23. 2026-08-19 01:32 UTCEG score recompute
  24. 2026-08-19 01:32 UTCGHSA enrichment
  25. 2026-08-18 13:48 UTCEPSS rescore
  26. 2026-08-17 13:47 UTCEPSS rescore
  27. 2026-08-16 23:42 UTCEG score recompute
  28. 2026-08-16 23:42 UTCGHSA enrichment
  29. 2026-08-16 14:56 UTCEPSS rescore
  30. 2026-08-16 02:14 UTCEPSS rescore
  31. 2026-08-15 23:56 UTCEG score recompute
  32. 2026-08-15 23:56 UTCGHSA enrichment
  33. 2026-08-15 01:30 UTCEPSS rescore
  34. 2026-08-15 00:10 UTCGHSA enrichment
  35. 2026-08-14 00:24 UTCGHSA enrichment
  36. 2026-08-13 00:37 UTCEG score recompute
  37. 2026-08-13 00:37 UTCGHSA enrichment
  38. 2026-08-12 13:51 UTCEPSS rescore
  39. 2026-08-12 00:51 UTCEG score recompute
  40. 2026-08-12 00:51 UTCGHSA enrichment
  41. 2026-08-11 01:06 UTCEG score recompute
  42. 2026-08-11 01:06 UTCGHSA enrichment
  43. 2026-08-11 00:00 UTCEPSS rescore
  44. 2026-08-10 01:20 UTCEG score recompute
  45. 2026-08-10 01:20 UTCGHSA enrichment
  46. 2026-08-09 13:46 UTCEPSS rescore
  47. 2026-08-09 01:34 UTCEG score recompute
  48. 2026-08-09 01:34 UTCGHSA enrichment
  49. 2026-08-08 16:37 UTCEPSS rescore
  50. 2026-08-08 01:48 UTCEG score recompute
  51. 2026-08-08 01:48 UTCGHSA enrichment
  52. 2026-08-07 02:02 UTCEG score recompute
  53. 2026-08-07 02:02 UTCGHSA enrichment
  54. 2026-08-06 13:47 UTCEPSS rescore
  55. 2026-08-06 02:16 UTCEG score recompute
  56. 2026-08-06 02:16 UTCGHSA enrichment
  57. 2026-08-05 19:17 UTCEPSS rescore
  58. 2026-08-05 02:31 UTCEG score recompute
  59. 2026-08-05 02:30 UTCGHSA enrichment
  60. 2026-08-04 15:10 UTCEPSS rescore
  61. 2026-08-04 10:39 UTCEPSS rescore
  62. 2026-08-04 02:27 UTCEG score recompute
  63. 2026-08-04 02:27 UTCGHSA enrichment
  64. 2026-08-03 10:36 UTCEPSS rescore
  65. 2026-08-03 02:41 UTCGHSA enrichment
  66. 2026-08-02 02:55 UTCEG score recompute
  67. 2026-08-02 02:55 UTCGHSA enrichment
  68. 2026-08-02 02:27 UTCEPSS rescore
  69. 2026-08-01 04:16 UTCEPSS rescore
  70. 2026-08-01 03:09 UTCGHSA enrichment
  71. 2026-07-31 01:10 UTCEG score recompute
  72. 2026-07-31 01:10 UTCGHSA enrichment
  73. 2026-07-30 16:28 UTCEPSS rescore
  74. 2026-07-30 01:30 UTCEPSS rescore
  75. 2026-07-30 01:15 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-53210?
CVE-2026-53210 is a medium vulnerability published on June 25, 2026. In the Linux kernel, the following vulnerability has been resolved: tee: shm: fix shm leak in registershmhelper() registershmhelper() allocates shm before calling ioviternpages(). If ioviternpages() returns 0, the function jumps to errctxput and leaks shm. This can be triggered by…
When was CVE-2026-53210 disclosed?
CVE-2026-53210 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53210 actively exploited?
CVE-2026-53210 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 94.2% of all scored CVEs.
What is the CVSS score of CVE-2026-53210?
CVE-2026-53210 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-53210?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53210, 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-53210

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