CVE-2024-36945 net/smc: fix neighbour and rtable leak in smc_ib_find_route()

2024-05-3015:35:43

Linux

github.com

linux

kernel

net/smc

fix

vulnerability

neighbour

rtable

leak

smc_ib_find_route

refcount

6.9 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.5%

JSON

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

net/smc: fix neighbour and rtable leak in smc_ib_find_route()

In smc_ib_find_route(), the neighbour found by neigh_lookup() and rtable
resolved by ip_route_output_flow() are not released or put before return.
It may cause the refcount leak, so fix it.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/smc/smc_ib.c"
    ],
    "versions": [
      {
        "version": "e5c4744cfb59",
        "lessThan": "d5a466ab6e78",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e5c4744cfb59",
        "lessThan": "5df93c029a90",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e5c4744cfb59",
        "lessThan": "da91e447d06d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e5c4744cfb59",
        "lessThan": "2ddc0dd7fec8",
        "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/smc/smc_ib.c"
    ],
    "versions": [
      {
        "version": "5.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.16",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.91",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.31",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.10",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]