CVE-2022-48639 net: sched: fix possible refcount leak in tc_new_tfilter()

2024-04-2812:59:42

Linux

github.com

linux kernel

net

sched

refcount leak

AI Score

6.7

Confidence

Low

EPSS

Percentile

15.5%

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

net: sched: fix possible refcount leak in tc_new_tfilter()

tfilter_put need to be called to put the refount got by tp->ops->get to
avoid possible refcount leak when chain->tmplt_ops != NULL and
chain->tmplt_ops != tp->ops.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "7d5509fa0d3d",
        "lessThan": "903f7d322c17",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7d5509fa0d3d",
        "lessThan": "8844c750eeb0",
        "versionType": "git"
      },
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        "status": "affected",
        "version": "7d5509fa0d3d",
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        "status": "affected",
        "version": "7d5509fa0d3d",
        "lessThan": "0559d91ee3a2",
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        "status": "affected",
        "version": "7d5509fa0d3d",
        "lessThan": "c2e1cfefcac3",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/sched/cls_api.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.1"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.1",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "5.4.215",
        "versionType": "custom",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.146",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.71",
        "versionType": "custom",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "5.19.12",
        "versionType": "custom",
        "lessThanOrEqual": "5.19.*"
      },
      {
        "status": "unaffected",
        "version": "6.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/sched/cls_api.c"
    ],
    "defaultStatus": "affected"
  }
]