CVE-2026-74693

Summary

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

net: prestera: validate firmware header length

prestera_fw_hdr_parse() reads the firmware header before checking that the firmware image contains that header.

Reject images shorter than struct prestera_fw_header before decoding the magic and version fields.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4c2703dfd7fabb0824b3bc345f9fa47e33248c14 < 38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240affected
LinuxLinux4c2703dfd7fabb0824b3bc345f9fa47e33248c14 < 0fbcceb9d19f2d1dcdf099aee590f2517cb718bbaffected
LinuxLinux4c2703dfd7fabb0824b3bc345f9fa47e33248c14 < e0f382e8084117f0b11ffb070fe1079e38c0d7f9affected
LinuxLinux4c2703dfd7fabb0824b3bc345f9fa47e33248c14 < 6fad06bb793d7089ae05b9fcf46e11be2dfe4850affected
LinuxLinux4c2703dfd7fabb0824b3bc345f9fa47e33248c14 < 470ac9cce7308e60cf2dceb448749cdd006e73deaffected
LinuxLinux4c2703dfd7fabb0824b3bc345f9fa47e33248c14 < 363e048a9d0a6c245cbc348c8a220170afed046aaffected
LinuxLinux4c2703dfd7fabb0824b3bc345f9fa47e33248c14 < 7fa8a12296d8d5aa4b1c3904f0b354d81124cf29affected
LinuxLinux4c2703dfd7fabb0824b3bc345f9fa47e33248c14 < 8ae344eb540af3f457179b52bc6061416752485caffected
LinuxLinux5.10affected
LinuxLinux0 < 5.10unaffected
LinuxLinux5.10.265 <= 5.10.*unaffected
LinuxLinux5.15.216 <= 5.15.*unaffected
LinuxLinux6.1.183 <= 6.1.*unaffected
LinuxLinux6.6.152 <= 6.6.*unaffected
LinuxLinux6.12.104 <= 6.12.*unaffected
LinuxLinux6.18.45 <= 6.18.*unaffected
LinuxLinux7.1.9 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References