x86/kprobes: Update kcb status flag after singlestepping
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 86% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
x86/kprobes: Update kcb status flag after singlestepping
Fix kprobes to update kcb (kprobes control block) status flag to
KPROBE_HIT_SSDONE even if the kp->post_handler is not set.
This bug may cause a kernel panic if another INT3 user runs right
after kprobes because kprobe_int3_handler() misunderstands the
INT3 is kprobe's single stepping INT3.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/1cbf3882cb372bbe752efd7c3045ca1c9ab40ac6https://git.kernel.org/stable/c/663cdda2716b70751df9c7e60b81bd0850fdfe3chttps://git.kernel.org/stable/c/b9c3401f7cac6ae291a16784dadcd1bf116218fehttps://git.kernel.org/stable/c/dec8784c9088b131a1523f582c2194cfc8107dc0https://git.kernel.org/stable/c/edc2ac7c7265b33660fa0190898966b49966b855