جزئیات آسیب‌پذیری

Use-after-free vulnerability in VFS in Google gVisor prior to release 20260831.0 on all platforms allows a local attacker with standard container privileges to achieve code execution in the host sentry process by double-freeing the backing MemoryFile from an in-sandbox overlay filesystem. The sentry process remains confined by host-level Linux seccomp and namespace boundaries.

• https://github.com/google/gvisor/commit/90bc4fc36fe442257a06ba15df00371561c183ed
• https://github.com/google/gvisor/commit/25c75149bc0eeaa6a3a49b9bbe3473588b2af6df
• https://github.com/google/gvisor/commit/e4efb89c787ef15b09e68d561f1303380e1d5a77