The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - fortify: Fix __compiletime_strlen() under UBSAN_BOUNDS_LOCAL With CONFIG_FORTIFY=y and     CONFIG_UBSAN_LOCAL_BOUNDS=y enabled, we observe a runtime panic while running Android's Compatibility Test     Suite's (CTS) android.hardware.input.cts.tests. This is stemming from a strlen() call in     hidinput_allocate(). __compiletime_strlen() is implemented in terms of __builtin_object_size(), then does     an array access to check for NUL-termination. A quirk of __builtin_object_size() is that for strings whose     values are runtime dependent, __builtin_object_size(str, 1 or 0) returns the maximum size of possible     values when those sizes are determinable at compile time. Example: static const char *v = FOO BAR;
    static const char *y = FOO BA; unsigned long x (int z) { // Returns 8, which is: //     max(__builtin_object_size(v, 1), __builtin_object_size(y, 1)) return __builtin_object_size(z ? v : y, 1);
    } So when FORTIFY_SOURCE is enabled, the current implementation of __compiletime_strlen() will try to     access beyond the end of y at runtime using the size of v. Mixed with UBSAN_LOCAL_BOUNDS we get a fault.
    hidinput_allocate() has a local C string whose value is control flow dependent on a switch statement, so
    __builtin_object_size(str, 1) evaluates to the maximum string length, making all other cases fault on the     last character check. hidinput_allocate() could be cleaned up to avoid runtime calls to strlen() since the     local variable can only have literal values, so there's no benefit to trying to fortify the strlen call     site there. Perform a __builtin_constant_p() check against index 0 earlier in the macro to filter out the     control-flow-dependant case. Add a KUnit test for checking the expected behavioral characteristics of     FORTIFY_SOURCE internals. (CVE-2022-50778)

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Linux Distros Unpatched Vulnerability : CVE-2022-50778

medium Nessus Plugin ID 279718

Version 1.3