CVE-2026-89878

CVE-2026-89878: vulnerability in Linux

media: s2255: check firmware size before reading trailing marker

Published

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 0.2%
exploitation probability
0.2%top 90% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/330f2936ab768c7215322a476f033143e8891d28https://git.kernel.org/stable/c/342632a4d8ba3fafc1556deee0b7a48dd7860336https://git.kernel.org/stable/c/3e03f1209c1c8a45a7bc559f4ecd79d9b33f706dhttps://git.kernel.org/stable/c/5626785b0e4665326e4d96736c106161da09b2f0https://git.kernel.org/stable/c/6f6a5b0b0a84c2de0e152f2841e57bc226db924fhttps://git.kernel.org/stable/c/7d221859ba45d7228d0138c9a3e55bd3bb31e14ehttps://git.kernel.org/stable/c/8eca0f85eeb0789be40e637bcf9a21c4265b6c6fhttps://git.kernel.org/stable/c/ffc27411ea60b8a09f1fea3d664b65210fdeb454