PT-2026-52917 · Undefined · Undefined
Publicado
2026-06-26
·
Atualizado
2026-06-26
·
CVE-2026-53278
Nenhuma
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In the Linux kernel, the following vulnerability has been resolved:
arm mpam: Check whether the config array is allocated before destroying it
destroy component cfg() is called to free the configuration array.
It uses the embedded 'garbage' structure, which means the array has
to be allocated.
If destroy component cfg() is called from mpam disable() before the
configuration was ever allocated, then a NULL pointer is dereferenced.
Check for this case and return early if the configuration is not
allocated.
destroy component cfg() also frees the mbwu state as this is allocated
by allocate component cfg(). As the mbwu state is allocated after
comp->cfg is set, and is also under mpam list lock, only the first
pointer needs checking.
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