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CVE-2026-43035 net: sched: cls_api: fix tc_chain_fill_node to initialize tcm_info to zero to prevent an info-leak

🗓️ 01 May 2026 14:15:33Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 29 Views

Kernel fix: zeroes tcm_info in tc_chain_fill_node to prevent info leak in netlink messages.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/sched/cls_api.c"
    ],
    "versions": [
      {
        "version": "32a4f5ecd7381f30ae3bb36dea77a150ba68af2e",
        "lessThan": "903c3405cfcc7700260e456ab66a5867586c9e69",
        "status": "affected",
        "versionType": "git"
      },
      {
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        "status": "affected",
        "versionType": "git"
      },
      {
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        "lessThan": "4ae5d23f51fb91d7d1140c6f1ba77ab0756054c3",
        "status": "affected",
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      },
      {
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      },
      {
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        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "32a4f5ecd7381f30ae3bb36dea77a150ba68af2e",
        "lessThan": "906997ea3766c24fbbf9cc4bf17c047315bbd138",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "32a4f5ecd7381f30ae3bb36dea77a150ba68af2e",
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      },
      {
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        "status": "affected",
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      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/sched/cls_api.c"
    ],
    "versions": [
      {
        "version": "4.19",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.19",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.253",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.203",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.168",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.134",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.81",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.22",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.12",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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