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.
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History
Wed, 16 Jul 2025 13:45:00 +0000
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Wed, 02 Apr 2025 02:00:00 +0000
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Thu, 27 Mar 2025 17:00:00 +0000
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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. | |
Title | netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function. | |
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Status: PUBLISHED
Assigner: Linux
Published: 2025-03-27T16:44:00.286Z
Updated: 2025-05-04T07:48:08.190Z
Reserved: 2025-03-27T16:40:15.757Z
Link: CVE-2023-53032

No data.

Status : Awaiting Analysis
Published: 2025-03-27T17:15:52.997
Modified: 2025-03-28T18:11:40.180
Link: CVE-2023-53032
