CVE-2024-35882
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.
Does this matter?
Lower severity and a low EPSS score (0.60%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.60% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/05258a0a69b3c5d2c003f818702c0a52b6fea861Mailing List, Patch
- https://git.kernel.org/stable/c/1ba1291172f935e6b6fe703161a948f3347400b8Mailing List, Patch
- https://git.kernel.org/stable/c/a2ebedf7bcd17a1194a0a18122c885eb578ee882Mailing List, Patch
- https://git.kernel.org/stable/c/05258a0a69b3c5d2c003f818702c0a52b6fea861Mailing List, Patch
- https://git.kernel.org/stable/c/1ba1291172f935e6b6fe703161a948f3347400b8Mailing List, Patch
- https://git.kernel.org/stable/c/a2ebedf7bcd17a1194a0a18122c885eb578ee882Mailing List, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.