From: Chris Mason <mason@kernel.org>
To: mason@kernel.org, bpf@vger.kernel.org
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
eddyz87@gmail.com, memxor@gmail.com, brauner@kernel.org
Subject: [PATCH RFC 0/2] Fix use-after-free related to binfmt-misc-bpf.c
Date: Wed, 16 Sep 2026 18:33:01 +0000 [thread overview]
Message-ID: <20260916183303.3504885-1-mason@kernel.org> (raw)
Hi everyone,
Christian asked me to run the recent binfmt_misc_bpf.c changes through
reviews and this bug popped out. The bug is reproduced, but I'm not at
all confident in the fix.
-chris
Chris Mason (2):
bpf: fix UAF via trusted BTF walk after release
selftests/bpf: test f_inode walk around bpf_put_file()
kernel/bpf/verifier.c | 16 +++++++++++
.../selftests/bpf/progs/verifier_vfs_accept.c | 26 ++++++++++++++++++
.../selftests/bpf/progs/verifier_vfs_reject.c | 27 +++++++++++++++++++
3 files changed, 69 insertions(+)
--
2.54.0
next reply other threads:[~2026-09-16 18:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-16 18:33 Chris Mason [this message]
2026-09-16 18:33 ` [PATCH RFC 1/2] bpf: fix UAF via trusted BTF walk after release Chris Mason
2026-09-16 18:46 ` Kumar Kartikeya Dwivedi
2026-09-16 19:19 ` Chris Mason
2026-09-16 18:33 ` [PATCH RFC 2/2] selftests/bpf: test f_inode walk around bpf_put_file() Chris Mason
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260916183303.3504885-1-mason@kernel.org \
--to=mason@kernel.org \
--cc=andrii@kernel.org \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=brauner@kernel.org \
--cc=daniel@iogearbox.net \
--cc=eddyz87@gmail.com \
--cc=memxor@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.