Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.6, < 5.15.165 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/69b6a67f7052905e928d75a0c5871de50e686986Patch
- https://git.kernel.org/stable/c/77bf0c4ab928ca4c9a99311f4f70ba0c17fecba9
- https://git.kernel.org/stable/c/791a615b7ad2258c560f91852be54b0480837c93Patch
- https://git.kernel.org/stable/c/8058c88ac0df21239daee54b5934d5c80ca9685fPatch
- https://git.kernel.org/stable/c/957a4d1c4c5849e4515c9fb4db21bf85318103dcPatch
- https://git.kernel.org/stable/c/9625c46ce6fd4f922595a4b32b1de5066d70464fPatch
FAQ
What is CVE-2024-57947?
CVE-2024-57947 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 siz...
How severe is CVE-2024-57947?
CVE-2024-57947 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2024-57947?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.