Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: check for overflows in io_pin_pages WARNING: CPU: 0 PID: 5834 at io_uring/memmap.c:144 io_pin_pages+0x149/0x180 io_uring/memmap.c:144 CPU: 0 UID: 0 PID: 5834 Comm: syz-executor825 Not tainted 6.12.0-next-20241118-syzkaller #0 Call Trace: <TASK> __io_uaddr_map+0xfb/0x2d0 io_uring/memmap.c:183 io_rings_map io_uring/io_uring.c:2611 [inline] io_allocate_scq_urings+0x1c0/0x650 io_uring/io_uring.c:3470 io_uring_create+0x5b5/0xc00 io_uring/io_uring.c:3692 io_uring_setup io_uring/io_uring.c:3781 [inline] ... </TASK> io_pin_pages()'s uaddr parameter came directly from the user and can be garbage. Don't just add size to it as it can overflow.
Affected products
linux: linux kernel
References5
- git.kernel.org/stable/c/0c0a4eae26ac78379d0c1db053de168a8febc6c9 Patch
- git.kernel.org/stable/c/29eac3eca72d4c2a71122050c37cd7d8f73ac4f3 Patch
- git.kernel.org/stable/c/aaa90844afd499c9142d0199dfda74439314c013 Patch
- git.kernel.org/stable/c/1a0aecabff72a95d240e6d7645949bfe0620dcd7
- git.kernel.org/stable/c/f1938217aee05be1c1dc53f581a3c353d033b508
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 21 · as of 6 November 2026
- CWE
- CWE-190
Could this be exploited in your environment?
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