CVE-2026-89897
media: cec: Serialize exclusive follower delivery
Description
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.
INFO
Published Date :
Sept. 16, 2026, 11:16 a.m.
Last Modified :
Sept. 16, 2026, 3:18 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Acquire adapter lock before accessing follower pointer.
- Serialize no-follower check and message delivery.
- Release lock after critical section.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-89897.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-89897 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-89897
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-89897 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-89897 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 16, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 16, 2026
Action Type Old Value New Value Added Description 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/89xxx/CVE-2026-89897.json">CVE-2026-89897</a> Added Reference https://git.kernel.org/stable/c/1924d0788caa6c66fd320dd4704fae99487fd2c7 Added Reference https://git.kernel.org/stable/c/271e57a936dcdbaecb4b1bd005d9a285bbe60ab4 Added Reference https://git.kernel.org/stable/c/4b532b271c91790b7ab661cd488a7ad36f5c4f6b Added Reference https://git.kernel.org/stable/c/5c62095acc2a952099688774513c4a637bcdb2b5 Added Reference https://git.kernel.org/stable/c/ae614f48712156fb0f55b207338d48d422c58bc0 Added Reference https://git.kernel.org/stable/c/cac577854826950dda4d53569728b1da6c1425d5 Added Reference https://git.kernel.org/stable/c/df941e6851da17fc53c7f6af2bdcc7383d17babc Added Reference https://git.kernel.org/stable/c/efc829b4b937f98c4467bffe9243f756b7cfbf7f