{"id":"CVE-2023-53032","title":"netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function.","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function.\n\nWhen first_ip is 0, last_ip is 0xFFFFFFFF, and netmask is 31, the value of\nan arithmeti…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < e137d9bb26bd85ce07323a38e38ceb0b160db841","Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < dfd834ccc1b88bbbab81b9046a3a539dd0c2d14f","Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < feefb33eefa166fc3e0fd17547b0bc0cb3baced9","Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < 4e6a70fd840400e3a2e784a6673968a3eb2431c0","Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < 511cf17b2447fc41cfef8d71936e1fa53e395c1e","Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < e88865876d47c790be0d5e23973499d75d034364","Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < 9ea4b476cea1b7d461d16dda25ca3c7e616e2d15","Linux 3.7"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:14:51.390619Z"},"published":"2025-03-27","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:20:54.972Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53032","references":[{"url":"https://git.kernel.org/stable/c/e137d9bb26bd85ce07323a38e38ceb0b160db841"},{"url":"https://git.kernel.org/stable/c/dfd834ccc1b88bbbab81b9046a3a539dd0c2d14f"},{"url":"https://git.kernel.org/stable/c/feefb33eefa166fc3e0fd17547b0bc0cb3baced9"},{"url":"https://git.kernel.org/stable/c/4e6a70fd840400e3a2e784a6673968a3eb2431c0"},{"url":"https://git.kernel.org/stable/c/511cf17b2447fc41cfef8d71936e1fa53e395c1e"},{"url":"https://git.kernel.org/stable/c/e88865876d47c790be0d5e23973499d75d034364"},{"url":"https://git.kernel.org/stable/c/9ea4b476cea1b7d461d16dda25ca3c7e616e2d15"}],"tags":["cve.org"],"epss":0.00201,"epssPercentile":0.10053,"ingestedAt":"2026-11-05T22:38:31.752Z","slug":"CVE-2023-53032","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function.\n\nWhen first_ip is 0, last_ip is 0xFFFFFFFF, and netmask is 31, the value of\nan arithmetic expression 2 << (netmask - mask_bits - 1) is subject\nto overflow due to a failure casting operands to a larger data type\nbefore performing the arithmetic.\n\nNote that it's harmless since the value will be checked at the next step.\n\nFound by InfoTeCS on behalf of Linux Verification Center\n(linuxtesting.org) with SVACE.\n\n## Affected\n\n- `Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < e137d9bb26bd85ce07323a38e38ceb0b160db841`\n- `Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < dfd834ccc1b88bbbab81b9046a3a539dd0c2d14f`\n- `Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < feefb33eefa166fc3e0fd17547b0bc0cb3baced9`\n- `Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < 4e6a70fd840400e3a2e784a6673968a3eb2431c0`\n- `Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < 511cf17b2447fc41cfef8d71936e1fa53e395c1e`\n- `Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < e88865876d47c790be0d5e23973499d75d034364`\n- `Linux >= b9fed748185a96b7cfe74afac4bd228e8af16f01 < 9ea4b476cea1b7d461d16dda25ca3c7e616e2d15`\n- `Linux 3.7`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}