CVE-2024-27402 phonet/pep: fix racy skb_queue_empty() use

2024-05-1711:40:14

Linux

www.cve.org

linux kernel

vulnerability

resolved

phonet/pep

racy skb_queue_empty()

spin-lock

socket buffer

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.5%

JSON

In the Linux kernel, the following vulnerability has been resolved:

phonet/pep: fix racy skb_queue_empty() use

The receive queues are protected by their respective spin-lock, not
the socket lock. This could lead to skb_peek() unexpectedly
returning NULL or a pointer to an already dequeued socket buffer.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/phonet/pep.c"
    ],
    "versions": [
      {
        "version": "9641458d3ec4",
        "lessThan": "9d5523e065b5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9641458d3ec4",
        "lessThan": "0a9f558c72c4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9641458d3ec4",
        "lessThan": "8ef4fcc7014b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9641458d3ec4",
        "lessThan": "7d2a894d7f48",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/phonet/pep.c"
    ],
    "versions": [
      {
        "version": "2.6.28",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.28",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.80",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.19",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.7",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]