CVE-2023-53032
netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function.
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netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function.
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function. When first_ip is 0, last_ip is 0xFFFFFFFF, and netmask is 31, the value of an arithmetic expression 2 << (netmask - mask_bits - 1) is subject to overflow due to a failure casting operands to a larger data type before performing the arithmetic. Note that it's harmless since the value will be checked at the next step. Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with SVACE.
Reserved 2025-03-27 | Published 2025-03-27 | Updated 2025-05-04 | Assigner Linuxgit.kernel.org/...c/e137d9bb26bd85ce07323a38e38ceb0b160db841
git.kernel.org/...c/dfd834ccc1b88bbbab81b9046a3a539dd0c2d14f
git.kernel.org/...c/feefb33eefa166fc3e0fd17547b0bc0cb3baced9
git.kernel.org/...c/4e6a70fd840400e3a2e784a6673968a3eb2431c0
git.kernel.org/...c/511cf17b2447fc41cfef8d71936e1fa53e395c1e
git.kernel.org/...c/e88865876d47c790be0d5e23973499d75d034364
git.kernel.org/...c/9ea4b476cea1b7d461d16dda25ca3c7e616e2d15
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