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| author | Zack Rusin <zack.rusin@broadcom.com> | 2024-04-25 22:27:48 +0300 |
|---|---|---|
| committer | Zack Rusin <zack.rusin@broadcom.com> | 2024-04-30 19:54:07 +0300 |
| commit | a37ef7613c00f2d72c8fc08bd83fb6cc76926c8c (patch) | |
| tree | 8c174de28603258e3f4fd102161460206295870c /fs/bcachefs/btree_locking.c | |
| parent | 6f572a80545773833f00c9a65e9242ab6fedb192 (diff) | |
| download | linux-a37ef7613c00f2d72c8fc08bd83fb6cc76926c8c.tar.xz | |
drm/vmwgfx: Fix invalid reads in fence signaled events
Correctly set the length of the drm_event to the size of the structure
that's actually used.
The length of the drm_event was set to the parent structure instead of
to the drm_vmw_event_fence which is supposed to be read. drm_read
uses the length parameter to copy the event to the user space thus
resuling in oob reads.
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Fixes: 8b7de6aa8468 ("vmwgfx: Rework fence event action")
Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-23566
Cc: David Airlie <airlied@gmail.com>
CC: Daniel Vetter <daniel@ffwll.ch>
Cc: Zack Rusin <zack.rusin@broadcom.com>
Cc: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Cc: <stable@vger.kernel.org> # v3.4+
Reviewed-by: Maaz Mombasawala <maaz.mombasawala@broadcom.com>
Reviewed-by: Martin Krastev <martin.krastev@broadcom.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240425192748.1761522-1-zack.rusin@broadcom.com
Diffstat (limited to 'fs/bcachefs/btree_locking.c')
0 files changed, 0 insertions, 0 deletions