CVE-2021-47538

2024-05-2415:15:17

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

linux

kernel

vulnerability

fix

rxrpc_local

leak

6.8 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.5%

JSON

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

rxrpc: Fix rxrpc_local leak in rxrpc_lookup_peer()

Need to call rxrpc_put_local() for peer candidate before kfree() as it
holds a ref to rxrpc_local.

[DH: v2: Changed to abstract the peer freeing code out into a function]

Affected configurations

Vulners

Node

linuxlinux_kernelRange5.4–4.19.220

linuxlinux_kernelRange4.20.0–5.4.164

linuxlinux_kernelRange5.5.0–5.10.84

linuxlinux_kernelRange5.11.0–5.15.7

linuxlinux_kernelRange5.16.0≥

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/rxrpc/peer_object.c"
    ],
    "versions": [
      {
        "version": "e8e51ce79c15",
        "lessThan": "913c24af2d13",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9ebeddef58c4",
        "lessThan": "3e70e3a72d80",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9ebeddef58c4",
        "lessThan": "60f0b9c42cb8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9ebeddef58c4",
        "lessThan": "9469273e616c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9ebeddef58c4",
        "lessThan": "beacff50edbd",
        "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/rxrpc/peer_object.c"
    ],
    "versions": [
      {
        "version": "5.4",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.4",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.220",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.164",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.84",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.7",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.16",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]