Bug 2373541 (CVE-2022-50096) - CVE-2022-50096 kernel: x86/kprobes: Update kcb status flag after singlestepping
Summary: CVE-2022-50096 kernel: x86/kprobes: Update kcb status flag after singlestepping
Keywords:
Status: NEW
Alias: CVE-2022-50096
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-06-18 12:07 UTC by OSIDB Bzimport
Modified: 2025-06-19 15:27 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2025-06-18 12:07:32 UTC 
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.
Comment 1 Avinash Hanwate 2025-06-19 15:17:10 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025061802-CVE-2022-50096-0220@gregkh/T
Note You need to log in before you can comment on or make changes to this bug.