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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2022-03-07 15:11:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-28 09:22:26 +0300 |
| commit | 2c8abafd6c72ef04bc972f40332c76c1dd04446d (patch) | |
| tree | e00c16d2e92c26d3a16c8d65334cbbaac2c6c9bb /include/net/codel_impl.h | |
| parent | 5149b895206f810e3b616896c1ee99d7a2d005c5 (diff) | |
| download | linux-2c8abafd6c72ef04bc972f40332c76c1dd04446d.tar.xz | |
esp: Fix possible buffer overflow in ESP transformation
commit ebe48d368e97d007bfeb76fcb065d6cfc4c96645 upstream.
The maximum message size that can be send is bigger than
the maximum site that skb_page_frag_refill can allocate.
So it is possible to write beyond the allocated buffer.
Fix this by doing a fallback to COW in that case.
v2:
Avoid get get_order() costs as suggested by Linus Torvalds.
Fixes: cac2661c53f3 ("esp4: Avoid skb_cow_data whenever possible")
Fixes: 03e2a30f6a27 ("esp6: Avoid skb_cow_data whenever possible")
Reported-by: valis <sec@valis.email>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/net/codel_impl.h')
0 files changed, 0 insertions, 0 deletions