CVE-2024-38612 ipv6: sr: fix invalid unregister error path

2024-06-1913:56:13

Linux

github.com

linux kernel

ipv6

seg6_init

genl_unregister_family

commit

vulnerability

error path

6.8 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

13.2%

JSON

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

ipv6: sr: fix invalid unregister error path

The error path of seg6_init() is wrong in case CONFIG_IPV6_SEG6_LWTUNNEL
is not defined. In that case if seg6_hmac_init() fails, the
genl_unregister_family() isn’t called.

This issue exist since commit 46738b1317e1 (“ipv6: sr: add option to control
lwtunnel support”), and commit 5559cea2d5aa (“ipv6: sr: fix possible
use-after-free and null-ptr-deref”) replaced unregister_pernet_subsys()
with genl_unregister_family() in this error path.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "46738b1317e1",
        "lessThan": "10610575a3ac",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "46738b1317e1",
        "lessThan": "646cd236c55e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "46738b1317e1",
        "lessThan": "00e6335329f2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "46738b1317e1",
        "lessThan": "1a63730fb315",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "46738b1317e1",
        "lessThan": "e77a3ec7ada8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "46738b1317e1",
        "lessThan": "3398a40dccb8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "46738b1317e1",
        "lessThan": "85a70ff1e572",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "46738b1317e1",
        "lessThan": "c04d6a914e89",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "46738b1317e1",
        "lessThan": "160e9d275218",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/ipv6/seg6.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.10"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.10",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "4.19.316",
        "versionType": "custom",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.278",
        "versionType": "custom",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.219",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.161",
        "versionType": "custom",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.93",
        "versionType": "custom",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.33",
        "versionType": "custom",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.8.12",
        "versionType": "custom",
        "lessThanOrEqual": "6.8.*"
      },
      {
        "status": "unaffected",
        "version": "6.9.3",
        "versionType": "custom",
        "lessThanOrEqual": "6.9.*"
      },
      {
        "status": "unaffected",
        "version": "6.10-rc1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/ipv6/seg6.c"
    ],
    "defaultStatus": "affected"
  }
]