CVE-2024-35882
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 0.6% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.6% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.6% · EPSS, next 30 days
- Weakness
- CWE-401
- Record status
- Modified
Affected
- Linux Kernel < 6.6.26
- Linux Kernel < 6.8.5
- Linux Kernel 6.9
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2024-35882.md and follow it. Check whether this project is affected by CVE-2024-35882. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/05258a0a69b3c5d2c003f818702c0a52b6fea861
- https://git.kernel.org/stable/c/1ba1291172f935e6b6fe703161a948f3347400b8
- https://git.kernel.org/stable/c/a2ebedf7bcd17a1194a0a18122c885eb578ee882
- https://git.kernel.org/stable/c/05258a0a69b3c5d2c003f818702c0a52b6fea861
- https://git.kernel.org/stable/c/1ba1291172f935e6b6fe703161a948f3347400b8
- https://git.kernel.org/stable/c/a2ebedf7bcd17a1194a0a18122c885eb578ee882
References
- https://git.kernel.org/stable/c/05258a0a69b3c5d2c003f818702c0a52b6fea861
- https://git.kernel.org/stable/c/1ba1291172f935e6b6fe703161a948f3347400b8
- https://git.kernel.org/stable/c/a2ebedf7bcd17a1194a0a18122c885eb578ee882
- https://git.kernel.org/stable/c/05258a0a69b3c5d2c003f818702c0a52b6fea861
- https://git.kernel.org/stable/c/1ba1291172f935e6b6fe703161a948f3347400b8
- https://git.kernel.org/stable/c/a2ebedf7bcd17a1194a0a18122c885eb578ee882