CVE-2023-53179

In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c The missing IP_SET_HASH_WITH_NET0 macro in ip_set_hash_netportnet can lead to the use of wrong `CIDR_POS(c)` for calculating array offsets, which can lead to integer underflow. As a result, it leads to slab out-of-bound access. This patch adds back the IP_SET_HASH_WITH_NET0 macro to ip_set_hash_netportnet to address the issue.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2025-09-15

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/050d91c03b28ca479df13dfb02bcd2c60dd6a878
• https://git.kernel.org/stable/c/109e830585e89a03d554bf8ad0e668630d0a6260
• https://git.kernel.org/stable/c/7935b636dd693dfe4483cfef4a1e91366c8103fa
• https://git.kernel.org/stable/c/7ca0706c68adadf86a36b60dca090f5e9481e808
• https://git.kernel.org/stable/c/83091f8ac03f118086596f17c9a52d31d6ca94b3

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