CVE-2023-52846 hsr: Prevent use after free in prp_create_tagged_frame()

2024-05-2115:31:43

Linux

www.cve.org

linux kernel

vulnerability

prevent use after free

prp_create_tagged_frame

cve

6.6 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

10.3%

JSON

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

hsr: Prevent use after free in prp_create_tagged_frame()

The prp_fill_rct() function can fail. In that situation, it frees the
skb and returns NULL. Meanwhile on the success path, it returns the
original skb. So it’s straight forward to fix bug by using the returned
value.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/hsr/hsr_forward.c"
    ],
    "versions": [
      {
        "version": "451d8123f897",
        "lessThan": "ddf4e04e946a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "451d8123f897",
        "lessThan": "a1a485e45d24",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "451d8123f897",
        "lessThan": "6086258bd5ea",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "451d8123f897",
        "lessThan": "1787b9f0729d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "451d8123f897",
        "lessThan": "d103fb672690",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "451d8123f897",
        "lessThan": "876f8ab52363",
        "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/hsr/hsr_forward.c"
    ],
    "versions": [
      {
        "version": "5.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.9",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.201",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.139",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.63",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.5.12",
        "lessThanOrEqual": "6.5.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.2",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]