CVE-2026-89897

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-16. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

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

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

media: cec: Serialize exclusive follower delivery

cec_receive_notify() reads the exclusive follower pointer without the adapter lock. Serialize the no-follower check and message delivery against mode changes and release.

CVSS v3
7.5
EG Score
7.5HIGHhigh confidence
EG Risk
38
EG Risk 38/100CISA SSVC

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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 16, 2026

Last Modified

September 16, 2026

Advisory Details (8)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic

media: cec: Serialize exclusive follower delivery - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/efc829b4b937f98c4467bffe9243f756b7cfbf7f
generic

media: cec: Serialize exclusive follower delivery - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/df941e6851da17fc53c7f6af2bdcc7383d17babc
generic

media: cec: Serialize exclusive follower delivery - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cac577854826950dda4d53569728b1da6c1425d5
generic

media: cec: Serialize exclusive follower delivery - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ae614f48712156fb0f55b207338d48d422c58bc0
generic

media: cec: Serialize exclusive follower delivery - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5c62095acc2a952099688774513c4a637bcdb2b5
generic

media: cec: Serialize exclusive follower delivery - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4b532b271c91790b7ab661cd488a7ad36f5c4f6b
generic

media: cec: Serialize exclusive follower delivery - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/271e57a936dcdbaecb4b1bd005d9a285bbe60ab4
generic

media: cec: Serialize exclusive follower delivery - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1924d0788caa6c66fd320dd4704fae99487fd2c7

Vendor Advisories for CVE-2026-89897(2)

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

Affected Packages

(4 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (360 versions)
  • every version on: no fix on record
—
linux-6.126.12.100-1~deb12u1, 6.12.101-1~deb12u1, 6.12.107-1~deb12u1
  • every version up to 6.12.111-1~deb12u1: fixed in 6.12.111-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (35 versions)
  • every version up to 6.12.111-1: fixed in 6.12.111-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (179 versions)
  • every version up to 7.2.6-1: fixed in 7.2.6-1
—

Data Freshness Timeline

(refreshed 37× in last 7d / 107× 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 107 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-89897?
CVE-2026-89897 is a high vulnerability published on September 16, 2026. In the Linux kernel, the following vulnerability has been resolved: media: cec: Serialize exclusive follower delivery cecreceivenotify() reads the exclusive follower pointer without the adapter lock. Serialize the no-follower check and message delivery against mode changes and release.
When was CVE-2026-89897 disclosed?
CVE-2026-89897 was first published on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-89897 actively exploited?
CVE-2026-89897 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-89897?
CVE-2026-89897 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-89897?
No fix for CVE-2026-89897 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-89897 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-89897

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