CVE-2023-1295: Privilege escalation with IO_RING_OP_CLOSE in the Linux Kernel
First published: Wed Jun 28 2023(Updated: )
A time-of-check to time-of-use issue exists in io_uring subsystem's IORING_OP_CLOSE operation in the Linux kernel's versions 5.6 - 5.11 (inclusive), which allows a local user to elevate their privileges to root. Introduced in b5dba59e0cf7e2cc4d3b3b1ac5fe81ddf21959eb, patched in 9eac1904d3364254d622bf2c771c4f85cd435fc2, backported to stable in 788d0824269bef539fe31a785b1517882eafed93.
Credit: cve-coordination@google.com cve-coordination@google.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=5.6<=5.11 | |
| Linux Linux kernel | >=5.6<5.10.162 | |
| Linux Linux kernel | >=5.11<5.11.6 | |
| Netapp H300s | ||
| Netapp H410c | ||
| Netapp H410s | ||
| Netapp H500s | ||
| Netapp H700s |
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Reference Links
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=788d0824269bef539fe31a785b1517882eafed93
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9eac1904d3364254d622bf2c771c4f85cd435fc2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b5dba59e0cf7e2cc4d3b3b1ac5fe81ddf21959eb
- https://kernel.dance/788d0824269bef539fe31a785b1517882eafed93
- https://kernel.dance/9eac1904d3364254d622bf2c771c4f85cd435fc2
- https://security.netapp.com/advisory/ntap-20230731-0006/
Frequently Asked Questions
What is CVE-2023-1295?
CVE-2023-1295 is a vulnerability that exists in the io_uring subsystem's IORING_OP_CLOSE operation in the Linux kernel versions 5.6 - 5.11, allowing a local user to elevate their privileges to root.
Which software is affected by CVE-2023-1295?
Linux kernel versions 5.6 - 5.11 are affected by CVE-2023-1295.
What is the severity of CVE-2023-1295?
CVE-2023-1295 has a severity rating of high (7).
How can I patch CVE-2023-1295?
CVE-2023-1295 has been patched in the Linux kernel version 9eac1904d3364254d622b.
Is macOS affected by CVE-2023-1295?
No, macOS versions such as Big Sur, Monterey, and Ventura are not affected by CVE-2023-1295.
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