https://github.com/torvalds/linux
Inside macsec_add_dev() we free percpu macsec->secy.tx_sc.stats and macsec->stats on some of the memory allocation failure paths. However, the net_device is already registered to that moment: in macsec_newlink(), just before calling macsec_add_dev(). This means that during unregister process its priv_destructor - macsec_free_netdev() - will be called and will free the stats again. Remove freeing percpu stats inside macsec_add_dev() because macsec_free_netdev() will correctly free the already allocated ones. The pointers to unallocated stats stay NULL, and free_percpu() treats that correctly. Found by Linux Verification Center (linuxtesting.org) with Syzkaller. Fixes: 0a28bfd4971f ("net/macsec: Add MACsec skb_metadata_dst Tx Data path support") Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver") Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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- v2.6.19-rc4
- v2.6.19-rc3
- v2.6.19-rc2
- v2.6.19-rc1
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- v2.6.18-rc5
- v2.6.18-rc4
- v2.6.18-rc3
- v2.6.18-rc2
- v2.6.18-rc1
- v2.6.18
- v2.6.17-rc6
- v2.6.17-rc5
- v2.6.17-rc4
- v2.6.17-rc3
- v2.6.17-rc2
- v2.6.17-rc1
- v2.6.17
- v2.6.16-rc6
- v2.6.16-rc5
- v2.6.16-rc4
- v2.6.16-rc3
- v2.6.16-rc2
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- v2.6.16
- v2.6.15-rc7
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- v2.6.15
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- v2.6.12-rc4
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- v2.6.12
- v2.6.11-tree
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net: macsec: fix double free of percpu stats
File | Mode | Size |
---|---|---|
Documentation | ||
LICENSES | ||
arch | ||
block | ||
certs | ||
crypto | ||
drivers | ||
fs | ||
include | ||
init | ||
io_uring | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
rust | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.clang-format | -rw-r--r-- | 20.1 KB |
.cocciconfig | -rw-r--r-- | 59 bytes |
.get_maintainer.ignore | -rw-r--r-- | 151 bytes |
.gitattributes | -rw-r--r-- | 90 bytes |
.gitignore | -rw-r--r-- | 2.1 KB |
.mailmap | -rw-r--r-- | 27.9 KB |
.rustfmt.toml | -rw-r--r-- | 369 bytes |
COPYING | -rw-r--r-- | 496 bytes |
CREDITS | -rw-r--r-- | 100.1 KB |
Kbuild | -rw-r--r-- | 2.5 KB |
Kconfig | -rw-r--r-- | 555 bytes |
MAINTAINERS | -rw-r--r-- | 693.8 KB |
Makefile | -rw-r--r-- | 70.1 KB |
README | -rw-r--r-- | 727 bytes |
Computing file changes ...