Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_set_pipapo: fix initial map fill The initial buffer has to be inited to all-ones, but it must restrict it to the size of the first field, not the total field size. After each round in the map search step, the result and the fill map are swapped, so if we have a set where f->bsize of the first element is smaller than m->bsize_max, those one-bits are leaked into future rounds result map. This makes pipapo find an incorrect matching results for sets where first field size is not the largest. Followup patch adds a test case to nft_concat_range.sh selftest script. Thanks to Stefano Brivio for pointing out that we need to zero out the remainder explicitly, only correcting memset() argument isn't enough.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
3c4287f62044a90e73a561aa05fc46e62da173da to < 77bf0c4ab928ca4c9a99311f4f70ba0c17fecba9affected3c4287f62044a90e73a561aa05fc46e62da173da to < 957a4d1c4c5849e4515c9fb4db21bf85318103dcaffected3c4287f62044a90e73a561aa05fc46e62da173da to < 9625c46ce6fd4f922595a4b32b1de5066d70464faffected3c4287f62044a90e73a561aa05fc46e62da173da to < 69b6a67f7052905e928d75a0c5871de50e686986affected3c4287f62044a90e73a561aa05fc46e62da173da to < 8058c88ac0df21239daee54b5934d5c80ca9685faffected3c4287f62044a90e73a561aa05fc46e62da173da to < 791a615b7ad2258c560f91852be54b0480837c93affected
Linux Linux
Default version status: affected
5.6affected0 to < 5.6unaffected5.10.247 to ≤ 5.10.*unaffected5.15.165 to ≤ 5.15.*unaffected6.1.103 to ≤ 6.1.*unaffected6.6.44 to ≤ 6.6.*unaffected6.10.3 to ≤ 6.10.*unaffected6.11 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/77bf0c4ab928ca4c9a99311f4f70ba0c17fecba9 ↗
- https://git.kernel.org/stable/c/957a4d1c4c5849e4515c9fb4db21bf85318103dc ↗
- https://git.kernel.org/stable/c/9625c46ce6fd4f922595a4b32b1de5066d70464f ↗
- https://git.kernel.org/stable/c/69b6a67f7052905e928d75a0c5871de50e686986 ↗
- https://git.kernel.org/stable/c/8058c88ac0df21239daee54b5934d5c80ca9685f ↗
- https://git.kernel.org/stable/c/791a615b7ad2258c560f91852be54b0480837c93 ↗