ospfd: Solved crash in RI parsing with OSPF TE (backport #15674) #16084
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Iggy Frankovic discovered another ospfd crash when perfomring fuzzing of OSPF LSA packets. The crash occurs in ospf_te_parse_ri() function when attemping to read Segment Routing subTLVs. The original code doesn't check if the size of the SR subTLVs have the correct length. In presence of erronous LSA, this will cause a buffer overflow and ospfd crash.
This patch introduces new verification of the subTLVs size for Router Information TLV.
This is an automatic backport of pull request #15674 done by Mergify.