hsr: Prevent use after free in prp_create_tagged_frame()
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.3%
exploitation probability
0.3%top 73% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/1787b9f0729d318d67cf7c5a95f0c3dba9a7cc18https://git.kernel.org/stable/c/6086258bd5ea7b5c706ff62da42b8e271b2401dbhttps://git.kernel.org/stable/c/876f8ab52363f649bcc74072157dfd7adfbabc0dhttps://git.kernel.org/stable/c/a1a485e45d24b1cd8fe834fd6f1b06e2903827dahttps://git.kernel.org/stable/c/d103fb6726904e353b4773188ee3d3acb4078363https://git.kernel.org/stable/c/ddf4e04e946aaa6c458b8b6829617cc44af2bffd