[Bug 266136] ctl_ioctl() passes user-supplied size directly to kernel malloc() -> potential crash
Date: Wed, 14 Sep 2022 17:29:24 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266136 --- Comment #5 from commit-hook@FreeBSD.org --- A commit in branch stable/12 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=ce1895b7248d5601b34d0d6492539a7081a8d451 commit ce1895b7248d5601b34d0d6492539a7081a8d451 Author: Alexander Motin <mav@FreeBSD.org> AuthorDate: 2022-09-07 01:58:27 +0000 Commit: Alexander Motin <mav@FreeBSD.org> CommitDate: 2022-09-14 17:28:18 +0000 CTL: Validate IOCTL parameters. It was possible to cause kernel panic by passing too large args_len or non-NULL result_nvl. Though since the /dev/cam/ctl device is accessible only by root and used only by limited number of tools it was not a big problem. PR: 266115 PR: 266136 Reported by: Robert Morris <rtm@lcs.mit.edu> MFC after: 1 week (cherry picked from commit 0586be48a97c5af50ba4f578d33211f81cc57016) sys/cam/ctl/ctl.c | 14 ++++++++++++++ sys/cam/ctl/ctl_ioctl.h | 1 + 2 files changed, 15 insertions(+) -- You are receiving this mail because: You are the assignee for the bug.