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| author | Eric Dumazet <edumazet@google.com> | 2026-01-28 14:15:39 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-02-11 13:40:24 +0100 |
| commit | e41a23e61259f5526af875c3b86b3d42a9bae0e5 (patch) | |
| tree | 56eb7c4ce3ea13e1b78052a323f880142d724687 /include/net/aligned_data.h | |
| parent | 8b6c7f14766464cf791eb86a206e3c6f78aa9a73 (diff) | |
net/sched: cls_u32: use skb_header_pointer_careful()
[ Upstream commit cabd1a976375780dabab888784e356f574bbaed8 ]
skb_header_pointer() does not fully validate negative @offset values.
Use skb_header_pointer_careful() instead.
GangMin Kim provided a report and a repro fooling u32_classify():
BUG: KASAN: slab-out-of-bounds in u32_classify+0x1180/0x11b0
net/sched/cls_u32.c:221
Fixes: fbc2e7d9cf49 ("cls_u32: use skb_header_pointer() to dereference data safely")
Reported-by: GangMin Kim <km.kim1503@gmail.com>
Closes: https://lore.kernel.org/netdev/CANn89iJkyUZ=mAzLzC4GdcAgLuPnUoivdLaOs6B9rq5_erj76w@mail.gmail.com/T/
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260128141539.3404400-3-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions