CVE-2024-40939 net: wwan: iosm: Fix tainted pointer delete is case of region creation fail

2024-07-1212:25:15

Linux

www.cve.org

linux kernel

net

wwan

iosm

region creation

vulnerability

svace

ipc

devlink create.

EPSS

Percentile

15.9%

JSON

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

net: wwan: iosm: Fix tainted pointer delete is case of region creation fail

In case of region creation fail in ipc_devlink_create_region(), previously
created regions delete process starts from tainted pointer which actually
holds error code value.
Fix this bug by decreasing region index before delete.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/wwan/iosm/iosm_ipc_devlink.c"
    ],
    "versions": [
      {
        "version": "4dcd183fbd67",
        "lessThan": "fe394d59cdae",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4dcd183fbd67",
        "lessThan": "040d93848703",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4dcd183fbd67",
        "lessThan": "37a438704d19",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4dcd183fbd67",
        "lessThan": "b0c9a2643541",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/wwan/iosm/iosm_ipc_devlink.c"
    ],
    "versions": [
      {
        "version": "5.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.16",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.95",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.35",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9.6",
        "lessThanOrEqual": "6.9.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]