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authorCharalampos Mitrodimas <charmitro@posteo.net>2025-08-12 15:51:25 +0000
committerSteffen Klassert <steffen.klassert@secunet.com>2025-08-15 08:30:16 +0200
commit2327a3d6f65ce2fe2634546dde4a25ef52296fec (patch)
treed03c1a50396e86caf466137446c3faff31b09861 /rust/helpers/platform.c
parent3b5ca25ecfa85098c7015251a0e7c78a8ff392e5 (diff)
net: ipv6: fix field-spanning memcpy warning in AH output
Fix field-spanning memcpy warnings in ah6_output() and ah6_output_done() where extension headers are copied to/from IPv6 address fields, triggering fortify-string warnings about writes beyond the 16-byte address fields. memcpy: detected field-spanning write (size 40) of single field "&top_iph->saddr" at net/ipv6/ah6.c:439 (size 16) WARNING: CPU: 0 PID: 8838 at net/ipv6/ah6.c:439 ah6_output+0xe7e/0x14e0 net/ipv6/ah6.c:439 The warnings are false positives as the extension headers are intentionally placed after the IPv6 header in memory. Fix by properly copying addresses and extension headers separately, and introduce helper functions to avoid code duplication. Reported-by: syzbot+01b0667934cdceb4451c@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=01b0667934cdceb4451c Signed-off-by: Charalampos Mitrodimas <charmitro@posteo.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'rust/helpers/platform.c')
0 files changed, 0 insertions, 0 deletions