On Tue, Mar 22, 2022 at 2:04 AM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > On Mon, Mar 21, 2022 at 06:49:02PM -0700, Vaibhav Rustagi wrote: > > Hi Greg, > > > > To fix CVE-2022-0886 in v5.10 and v5.4, we need to cherry-pick the > > commit "esp: Fix possible buffer overflow in ESP transformation" > > (ebe48d368e97d007bfeb76fcb065d6cfc4c96645). The commit didn't apply > > cleanly in v5.10 and v5.4 and therefore, patches for both the kernel > > versions are attached. > > > > In order to backport the original commit, following changes are done: > > > > - v5.10: > > - "SKB_FRAG_PAGE_ORDER" declaration is moved from > > "net/core/sock.c" to "include/net/sock.c" > > Did you see that this is already in the 5.10 queue and out for review > right now? Can you verify that the backport there matches yours? > I was not aware that I could check that. Thanks for the hint. The change is not exactly identical. In addition to the change mentioned in https://www.spinics.net/lists/stable/msg542796.html, I have also removed following from "net/core/sock.c": -#define SKB_FRAG_PAGE_ORDER get_order(32768) This is done because "net/core/sock.c" includes "include/net/sock.h" which defined the MACRO. > > - v5.4: > > - "SKB_FRAG_PAGE_ORDER" declaration is moved from > > "net/core/sock.c" to "include/net/sock.c" > > - Ignore changes introduced due to `xfrm: add support for UDPv6 > > encapsulation of ESP` in esp6_output_head() > > Thanks for this one, I'll queue it up after this next round of releases. > What about 4.14 and 4.19? Will this backport work there? If not, can > you provide a working one? > I haven't tested the change in v4.14 and v4.19. I will check out those trees and check whether the current patch will work or not. > thanks, > > greg k-h Regards, Vaibhav
