crypto: ccree - Fix use after free in cc_cipher_exit()
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.3%
exploitation probability
0.3%top 83% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
crypto: ccree - Fix use after free in cc_cipher_exit()
kfree_sensitive(ctx_p->user.key) will free the ctx_p->user.key. But
ctx_p->user.key is still used in the next line, which will lead to a
use after free.
We can call kfree_sensitive() after dev_dbg() to avoid the uaf.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/25c358efee5153dfd240d4e0d3169d5bebe9cacdhttps://git.kernel.org/stable/c/335bf1fc74f775a8255257aa3e33763f2257b676https://git.kernel.org/stable/c/3d950c34074ed74d2713c3856ba01264523289e6https://git.kernel.org/stable/c/c93017c8d5ebf55a4e453ac7c84cc84cf92ab570https://git.kernel.org/stable/c/cffb5382bd8d3cf21b874ab5b84bf7618932286b