CVE-2022-48938: falha em Linux
CDC-NCM: avoid overflow in sanity checking
Publicada em · Atualizada em
3Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackepss 0.2%
probabilidade de exploração
0.2%top 89% das CVEs
exploração observada
nãonenhuma fonte reporta
In the Linux kernel, the following vulnerability has been resolved:
CDC-NCM: avoid overflow in sanity checking
A broken device may give an extreme offset like 0xFFF0
and a reasonable length for a fragment. In the sanity
check as formulated now, this will create an integer
overflow, defeating the sanity check. Both offset
and offset + len need to be checked in such a manner
that no overflow can occur.
And those quantities should be unsigned.
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Referências
https://git.kernel.org/stable/c/49909c9f8458cacb5b241106cba65aba5a6d8f4chttps://git.kernel.org/stable/c/69560efa001397ebb8dc1c3e6a3ce00302bb9f7fhttps://git.kernel.org/stable/c/7b737e47b87589031f0d4657f6d7b0b770474925https://git.kernel.org/stable/c/8d2b1a1ec9f559d30b724877da4ce592edc41fdchttps://git.kernel.org/stable/c/9957fbf34f52a4d8945d1bf39aae400ef9a11246https://git.kernel.org/stable/c/a612395c7631918e0e10ea48b9ce5ab4340f26a6