In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: add missing range check in bitmap_ip_uadt When tb[IPSET_ATTR_IP_TO] is not present but tb[IPSET_ATTR_CIDR] exists, the values of ip and ip_to are slightly swapped. Therefore, the range check for ip should be done later, but this part is missing and it seems that the vulnerability occurs. So we should add missing range checks and remove unnecessary range checks.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- https://git.kernel.org/stable/c/15794835378ed56fb9bacc6a5dd3b9f33520604e Patch
- https://git.kernel.org/stable/c/35f56c554eb1b56b77b3cf197a6b00922d49033d Patch
- https://git.kernel.org/stable/c/3c20b5948f119ae61ee35ad8584d666020c91581 Patch
- https://git.kernel.org/stable/c/591efa494a1cf649f50a35def649c43ae984cd03 Patch
- https://git.kernel.org/stable/c/856023ef032d824309abd5c747241dffa33aae8c Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.8 · linuxNVD modified 2026-10-15 22:18
Affected (CPE criteria) 1
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References 11
- https://git.kernel.org/stable/c/15794835378ed56fb9bacc6a5dd3b9f33520604e Patch
- https://git.kernel.org/stable/c/2e151b8ca31607d14fddc4ad0f14da0893e1a7c7
- https://git.kernel.org/stable/c/35f56c554eb1b56b77b3cf197a6b00922d49033d Patch
- https://git.kernel.org/stable/c/3c20b5948f119ae61ee35ad8584d666020c91581 Patch
- https://git.kernel.org/stable/c/591efa494a1cf649f50a35def649c43ae984cd03 Patch
- https://git.kernel.org/stable/c/78b0f2028f1043227a8eb0c41944027fc6a04596
- https://git.kernel.org/stable/c/7ffef5e5d5eeecd9687204a5ec2d863752aafb7e
- https://git.kernel.org/stable/c/856023ef032d824309abd5c747241dffa33aae8c Patch
- https://git.kernel.org/stable/c/e67471437ae9083fa73fa67eee1573fec1b7c8cf
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html