جزئیات آسیب‌پذیری

In the Linux kernel, the following vulnerability has been resolved: md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout When llbitmap_suspend_timeout() times out waiting for percpu_ref to become zero, it returns -ETIMEDOUT without resurrecting the percpu_ref. The caller (md_llbitmap_daemon_fn) then continues to the next page without calling llbitmap_resume(), leaving the percpu_ref in a killed state permanently. Fix this by resurrecting the percpu_ref before returning the error, ensuring the page control structure remains usable for subsequent operations.

• https://git.kernel.org/stable/c/095417d6b669c2dec39a5842ccb94df915f97f54
• https://git.kernel.org/stable/c/2446d099350185caeed19ab2c0270451a97296fb
• https://git.kernel.org/stable/c/d119bd2e1643cc023210ff3c6f0657e4f914e71d