kernel/bpf/verifier.c in the Linux kernel up to and including 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.
Vulnerable Product | Search on Vulmon | Subscribe to Product |
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linux linux kernel |
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fedoraproject fedora 33 |
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fedoraproject fedora 34 |
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netapp cloud backup - |
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netapp solidfire \\& hci management node - |
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