CVE-2026-89878
media: s2255: check firmware size before reading trailing marker
Description
In the Linux kernel, the following vulnerability has been resolved: media: s2255: check firmware size before reading trailing marker s2255_probe() reads a 4-byte marker and version from the last 8 bytes of the firmware blob (fw->data[fw_size - 8] and [fw_size - 4]). If the firmware file is shorter than 8 bytes, fw_size - 8 underflows and the access reads out of bounds. Validate the firmware size before indexing.
INFO
Published Date :
Sept. 16, 2026, 11:16 a.m.
Last Modified :
Sept. 16, 2026, 11:16 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Patch the Linux kernel to check firmware size before indexing.
- Ensure firmware blobs are at least 8 bytes long.
- Update the Linux kernel to the patched version.
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-2026-89878.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-89878 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-2026-89878
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-2026-89878 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-89878 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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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: s2255: check firmware size before reading trailing marker s2255_probe() reads a 4-byte marker and version from the last 8 bytes of the firmware blob (fw->data[fw_size - 8] and [fw_size - 4]). If the firmware file is shorter than 8 bytes, fw_size - 8 underflows and the access reads out of bounds. Validate the firmware size before indexing. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/89xxx/CVE-2026-89878.json">CVE-2026-89878</a> Added Reference https://git.kernel.org/stable/c/330f2936ab768c7215322a476f033143e8891d28 Added Reference https://git.kernel.org/stable/c/342632a4d8ba3fafc1556deee0b7a48dd7860336 Added Reference https://git.kernel.org/stable/c/3e03f1209c1c8a45a7bc559f4ecd79d9b33f706d Added Reference https://git.kernel.org/stable/c/5626785b0e4665326e4d96736c106161da09b2f0 Added Reference https://git.kernel.org/stable/c/6f6a5b0b0a84c2de0e152f2841e57bc226db924f Added Reference https://git.kernel.org/stable/c/7d221859ba45d7228d0138c9a3e55bd3bb31e14e Added Reference https://git.kernel.org/stable/c/8eca0f85eeb0789be40e637bcf9a21c4265b6c6f Added Reference https://git.kernel.org/stable/c/ffc27411ea60b8a09f1fea3d664b65210fdeb454