Vulnerabilities > CVE-2024-35882 - Unspecified vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Fix a slow server-side memory leak with RPC-over-TCP Jan Schunk reports that his small NFS servers suffer from memory exhaustion after just a few days. A bisect shows that commit e18e157bb5c8 ("SUNRPC: Send RPC message on TCP with a single sock_sendmsg() call") is the first bad commit. That commit assumed that sock_sendmsg() releases all the pages in the underlying bio_vec array, but the reality is that it doesn't. svc_xprt_release() releases the rqst's response pages, but the record marker page fragment isn't one of those, so it is never released. This is a narrow fix that can be applied to stable kernels. A more extensive fix is in the works.
Vulnerable Configurations
References
- https://git.kernel.org/stable/c/05258a0a69b3c5d2c003f818702c0a52b6fea861
- https://git.kernel.org/stable/c/05258a0a69b3c5d2c003f818702c0a52b6fea861
- https://git.kernel.org/stable/c/1ba1291172f935e6b6fe703161a948f3347400b8
- https://git.kernel.org/stable/c/1ba1291172f935e6b6fe703161a948f3347400b8
- https://git.kernel.org/stable/c/a2ebedf7bcd17a1194a0a18122c885eb578ee882
- https://git.kernel.org/stable/c/a2ebedf7bcd17a1194a0a18122c885eb578ee882