Researcher Aaron Esau and the V12 Security team disclosed PinTheft, a Linux kernel local privilege escalation that chains an RDS zerocopy reference-count bug with io_uring fixed buffers to overwrite the page cache of a SUID-root binary. A public proof-of-concept is available. Any unprivileged local user on an affected host can use it to gain root.
Intelligence View
PinTheft kernel LPE: CloudLinux platforms are not affected
Researcher Aaron Esau and the V12 Security team disclosed PinTheft, a Linux kernel local privilege escalation that chains an RDS zerocopy reference-count bug with io_uring fixed buffers to overwrite the page cache of a SUID-root binary. A…