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

2024-05-2115:31:43

Linux

github.com

linux kernel

hsr

prp_create_tagged_frame

use after free

vulnerability

AI Score

6.9

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

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

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