CVE-2023-52846 Information

Description

In the Linux kernel the following vulnerability has been resolved:

hsr: Prevent use after free in prp_create_tagged_frame()

The prp_fill_rct() function can fail. In that situation it frees the skb and returns NULL. Meanwhile on the success path it returns the original skb. So it’s straight forward to fix bug by using the returned value.

Reference

https://git.kernel.org/stable/c/ddf4e04e946aaa6c458b8b6829617cc44af2bffd https://git.kernel.org/stable/c/a1a485e45d24b1cd8fe834fd6f1b06e2903827da https://git.kernel.org/stable/c/6086258bd5ea7b5c706ff62da42b8e271b2401db https://git.kernel.org/stable/c/1787b9f0729d318d67cf7c5a95f0c3dba9a7cc18 https://git.kernel.org/stable/c/d103fb6726904e353b4773188ee3d3acb4078363 https://git.kernel.org/stable/c/876f8ab52363f649bcc74072157dfd7adfbabc0d