Buffer overflow in Linux kernel - CVE-2025-21927
Published: April 2, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU106844
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-21927
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to memory corruption within the nvme_tcp_queue_id() and nvme_tcp_recv_pdu() functions in drivers/nvme/host/tcp.c. A local user can escalate privileges on the system.
How to mitigate CVE-2025-21927
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/22b06c89aa6b2d1ecb8aea72edfb9d53af8d5126
- https://git.kernel.org/stable/c/9fbc953d6b38bc824392e01850f0aeee3b348722
- https://git.kernel.org/stable/c/ad95bab0cd28ed77c2c0d0b6e76e03e031391064
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14