Description
In the Linux kernel, the following vulnerability has been resolved: kprobes: Fix check for probe enabled in kill_kprobe() In kill_kprobe(), the check whether disarm_kprobe_ftrace() needs to be called always fails. This is because before that we set the KPROBE_FLAG_GONE flag for kprobe so that "!kprobe_disabled(p)" is always false. The disarm_kprobe_ftrace() call introduced by commit: 0cb2f1372baa ("kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler") to fix the NULL pointer reference problem. When the probe is enabled, if we do not disarm it, this problem still exists. Fix it by putting the probe enabled check before setting the KPROBE_FLAG_GONE flag.
Product status
3031313eb3d549b7ad6f9fbcc52ba04412e3eb9e (git) before f20a067f13106565816b4b6a6b665b2088a63824
3031313eb3d549b7ad6f9fbcc52ba04412e3eb9e (git) before c909985dd0c0f74b61e3f8f0e04bf8aa9c8b97c7
3031313eb3d549b7ad6f9fbcc52ba04412e3eb9e (git) before 0c76ef3f26d5ef2ac2c21b47e7620cff35809fbb
3c5f8d371b7fef3e3714c4a062c7f3b4aa41d122 (git)
9b55d84deec88c02b053a819acf08a6d471dda02 (git)
2295608b44c91df767a5c68027f9c9e52ecb28e7 (git)
ce7ff920092130f249b75f9fe177edb3362fefe8 (git)
3995f7a60feceba6c8f762f4aff3184f90a1291d (git)
247c62ebdfae450bb76dd89cd4724df6be07df75 (git)
5.9
Any version before 5.9
6.0.16 (semver)
6.1.2 (semver)
6.2 (original_commit_for_fix)
References
git.kernel.org/...c/f20a067f13106565816b4b6a6b665b2088a63824
git.kernel.org/...c/c909985dd0c0f74b61e3f8f0e04bf8aa9c8b97c7
git.kernel.org/...c/0c76ef3f26d5ef2ac2c21b47e7620cff35809fbb
