CVE-2024-56639 net: hsr: must allocate more bytes for RedBox support

In the Linux kernel, the following vulnerability has been resolved: net: hsr: must allocate more bytes for RedBox support Blamed commit forgot to change hsrinitskb to allocate larger skb for RedBox case. Indeed, sendhsrsupervisionframe will add two additional components struct hsrsuptlv and struc...

CVE-2024-56639

CVE-2024-56639 affects the Linux kernel net/hsr RedBox path. The root cause was an under-allocated skb in hsr_init_skb() for RedBox, causing skb_over_panic when sending supervision frames that add two TLV components. The issue led to OOPs in skb_panic at net/core/skbuff.c:206 and a local exploit ...