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ipv6/addrconf: fix a potential refcount underflow for idev

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: ipv6/addrconf: fix a potential refcount underflow for idev Now in addrconf_mod_rs_timer(), reference idev depends on whether rs_timer is not pending. Then modify rs_timer timeout. There is a time gap in [1], during which if the pending rs_timer becomes not pending. It will miss to hold idev, but the rs_timer is activated. Thus rs_timer callback function addrconf_rs_timer() will be executed and put idev later without holding idev. A refcount underflow issue for idev can be caused by this. if (!timer_pending(&idev->rs_timer)) in6_dev_hold(idev); <--------------[1] mod_timer(&idev->rs_timer, jiffies + when); To fix the issue, hold idev if mod_timer() return 0.

Announced Group revision 1
Original source ↗

CVE-2023-53189

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2023-53189

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
        "lessThan": "c6395e32935d35e6f935e7caf1c2dac5a95943b4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
        "lessThan": "df62fdcd004afa72ecbed0e862ebb983acd3aa57",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
        "lessThan": "c7eeba47058532f6077d6a658e38b6698f6ae71a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
        "lessThan": "2ad31ce40e8182860b631e37209e93e543790b7c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
        "lessThan": "82abd1c37d3bf2a2658b34772c17a25a6f9cca42",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
        "lessThan": "436b7cc7eae7851c184b671ed7a4a64c750b86f7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
        "lessThan": "1f656e483eb4733d62f18dfb206a49b78f60f495",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b7b1bfce0bb68bd8f6e62a28295922785cc63781",
        "lessThan": "06a0716949c22e2aefb648526580671197151acc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "973d5956f754cfc306f5e274d71503498f4b0324",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3.10.105",
        "lessThan": "3.11",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "net/ipv6/addrconf.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.11"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.11",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "4.14.322",
        "versionType": "semver",
        "lessThanOrEqual": "4.14.*"
      },
      {
        "status": "unaffected",
        "version": "4.19.291",
        "versionType": "semver",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.251",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.188",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.121",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.40",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.4.5",
        "versionType": "semver",
        "lessThanOrEqual": "6.4.*"
      },
      {
        "status": "unaffected",
        "version": "6.5",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/ipv6/addrconf.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2023-53189

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#30264 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2023-53189 · Revision 1Source updated