github - ghsa-96rq-8hwj-wwwm

ghsa-96rq-8hwj-wwwm

Vulnerability from github

Published

2024-05-19 09:34

Modified

2024-05-19 09:34

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-35882"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-19T09:15:09Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: Fix a slow server-side memory leak with RPC-over-TCP\n\nJan Schunk reports that his small NFS servers suffer from memory\nexhaustion after just a few days. A bisect shows that commit\ne18e157bb5c8 (\"SUNRPC: Send RPC message on TCP with a single\nsock_sendmsg() call\") is the first bad commit.\n\nThat commit assumed that sock_sendmsg() releases all the pages in\nthe underlying bio_vec array, but the reality is that it doesn\u0027t.\nsvc_xprt_release() releases the rqst\u0027s response pages, but the\nrecord marker page fragment isn\u0027t one of those, so it is never\nreleased.\n\nThis is a narrow fix that can be applied to stable kernels. A\nmore extensive fix is in the works.",
  "id": "GHSA-96rq-8hwj-wwwm",
  "modified": "2024-05-19T09:34:46Z",
  "published": "2024-05-19T09:34:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-35882"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05258a0a69b3c5d2c003f818702c0a52b6fea861"
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      "url": "https://git.kernel.org/stable/c/1ba1291172f935e6b6fe703161a948f3347400b8"
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  "schema_version": "1.4.0",
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}

cve-2024-35882

Vulnerability from cvelistv5

Published

2024-05-19 08:34

Modified

2024-11-05 09:24

Severity ?

Summary

SUNRPC: Fix a slow server-side memory leak with RPC-over-TCP

References

▼	URL	Tags
	https://git.kernel.org/stable/c/1ba1291172f935e6b6fe703161a948f3347400b8
	https://git.kernel.org/stable/c/a2ebedf7bcd17a1194a0a18122c885eb578ee882
	https://git.kernel.org/stable/c/05258a0a69b3c5d2c003f818702c0a52b6fea861

Impacted products

Vendor

Product

Version

▼

Linux

Version: e18e157bb5c8
Version: e18e157bb5c8
Version: e18e157bb5c8

Linux

Version: 6.6

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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