Eric Lee / linux-smarc-t335x-v3.2

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Commit 914d11647b6d6fe81bdf0c059612ee36282b8cee

Authored by Ilpo Järvinen
Committed by David S. Miller
1 parent 22604c8668
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

ipv6: IPV6_PKTINFO relied userspace providing correct length 

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Reported-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff

net/ipv6/ipv6_sockglue.c
Diff comments   View file @ 914d116
... ... @@ -404,7 +404,7 @@
404 404 else if (optlen < sizeof(struct in6_pktinfo) || optval == NULL)
405 405 goto e_inval;
406 406  
407   - if (copy_from_user(&pkt, optval, optlen)) {
  407 + if (copy_from_user(&pkt, optval, sizeof(struct in6_pktinfo))) {
408 408 retv = -EFAULT;
409 409 break;
410 410 }