Memory Error Handling Vulnerability in Linux Kernel Affecting Various Versions
CVE-2025-39989
What is CVE-2025-39989?
A significant issue in the Linux kernel has been identified where improper error handling during memory operations can lead to kernel panics or user process terminations. Specifically affecting versions beyond 5.17, this vulnerability arises during the handling of memory errors in copy-from-user operations, which can result in a critical failure scenario. The failure occurs due to a race condition between memory controller signals and kernel operations, causing unhandled memory errors that lead to system instability. A recent patch aims to rectify these issues by restoring effective error recovery methods, ensuring that the system can handle these memory failures without crashing.
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Affected Version(s)
Linux 4c132d1d844a53fc4e4b5c34e36ef10d6124b783 < 5724654a084f701dc64b08d34a0e800f22f0e6e4
Linux 4c132d1d844a53fc4e4b5c34e36ef10d6124b783 < 3e3d8169c0950a0b3cd5105f6403a78350dcac80
Linux 4c132d1d844a53fc4e4b5c34e36ef10d6124b783 < 449413da90a337f343cc5a73070cbd68e92e8a54