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| author | Vincent Donnefort <vdonnefort@google.com> | 2026-04-10 13:45:27 +0100 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2026-04-14 05:13:09 -0400 |
| commit | 6170922f137231b98fc568571befef63e1edff3f (patch) | |
| tree | cd2f5f906de6d37a2e7940dbf6a7495a106b2fcf /rust/kernel/interop/git@git.tavy.me:linux-stable.git | |
| parent | 1111e9bd83f8562391f9052af37ddbdfee5b76db (diff) | |
ring-buffer: Prevent off-by-one array access in ring_buffer_desc_page()
As pointed out by Smatch, the ring-buffer descriptor array page_va is
counted by nr_page_va, but the accessor ring_buffer_desc_page() allows
access off by one.
Currently, this does not cause problems, as the page ID always comes
from a trusted source. Nonetheless, ensure robustness and fix the
accessor. While at it, make the page_id unsigned.
Link: https://patch.msgid.link/20260410124527.3563970-1-vdonnefort@google.com
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'rust/kernel/interop/git@git.tavy.me:linux-stable.git')
0 files changed, 0 insertions, 0 deletions