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CVE-2023-53032 – Linux Kernel Netfilter Ipset Overflow

The following table lists the changes that have been made to the
CVE-2023-53032 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Mar. 27, 2025

    Action Type Old Value New Value
    Added Description 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.
    Added Reference https://git.kernel.org/stable/c/4e6a70fd840400e3a2e784a6673968a3eb2431c0
    Added Reference https://git.kernel.org/stable/c/511cf17b2447fc41cfef8d71936e1fa53e395c1e
    Added Reference https://git.kernel.org/stable/c/9ea4b476cea1b7d461d16dda25ca3c7e616e2d15
    Added Reference https://git.kernel.org/stable/c/dfd834ccc1b88bbbab81b9046a3a539dd0c2d14f
    Added Reference https://git.kernel.org/stable/c/e137d9bb26bd85ce07323a38e38ceb0b160db841
    Added Reference https://git.kernel.org/stable/c/e88865876d47c790be0d5e23973499d75d034364
    Added Reference https://git.kernel.org/stable/c/feefb33eefa166fc3e0fd17547b0bc0cb3baced9
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