https://github.com/torvalds/linux
Revision cf5000a7787cbc10341091d37245a42c119d26c5 authored by Florian Westphal on 19 September 2023, 13:36:13 UTC, committed by Florian Westphal on 20 September 2023, 08:35:23 UTC
When more than 255 elements expired we're supposed to switch to a new gc
container structure.
This never happens: u8 type will wrap before reaching the boundary
and nft_trans_gc_space() always returns true.
This means we recycle the initial gc container structure and
lose track of the elements that came before.
While at it, don't deref 'gc' after we've passed it to call_rcu.
Fixes: 5f68718b34a5 ("netfilter: nf_tables: GC transaction API to avoid race with control plane")
Reported-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
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History 
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Tip revision: cf5000a7787cbc10341091d37245a42c119d26c5 authored by Florian Westphal on 19 September 2023, 13:36:13 UTC
netfilter: nf_tables: fix memleak when more than 255 elements expired
netfilter: nf_tables: fix memleak when more than 255 elements expired
Tip revision: cf5000a
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| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
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| 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-- | 105 bytes |
| .gitignore | -rw-r--r-- | 2.0 KB |
| .mailmap | -rw-r--r-- | 35.6 KB |
| .rustfmt.toml | -rw-r--r-- | 369 bytes |
| COPYING | -rw-r--r-- | 496 bytes |
| CREDITS | -rw-r--r-- | 100.0 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
| Kconfig | -rw-r--r-- | 555 bytes |
| MAINTAINERS | -rw-r--r-- | 709.5 KB |
| Makefile | -rw-r--r-- | 65.9 KB |
| README | -rw-r--r-- | 727 bytes |
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