CVE-2024-57947

MEDIUM EPSS 9.9%
Published Jan 23, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jan 23, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
9.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-401

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥5.6  –  <5.15.165
linuxlinux_kernel*≥5.16  –  <6.1.103
linuxlinux_kernel*≥6.2  –  <6.6.44
linuxlinux_kernel*≥6.7  –  <6.10.3

References 6

  • git.kernel.org https://git.kernel.org/stable/c/69b6a67f7052905e928d75a0c5871de50e686986
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/77bf0c4ab928ca4c9a99311f4f70ba0c17fecba9
  • git.kernel.org https://git.kernel.org/stable/c/791a615b7ad2258c560f91852be54b0480837c93
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8058c88ac0df21239daee54b5934d5c80ca9685f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/957a4d1c4c5849e4515c9fb4db21bf85318103dc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9625c46ce6fd4f922595a4b32b1de5066d70464f
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/69b6a67f7052905e928d75a0c5871de50e686986
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/791a615b7ad2258c560f91852be54b0480837c93
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8058c88ac0df21239daee54b5934d5c80ca9685f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/957a4d1c4c5849e4515c9fb4db21bf85318103dc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9625c46ce6fd4f922595a4b32b1de5066d70464f
    Patch