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CVE-2026-98861 fprobe: Use guard(rcu_sched_notrace) and check rcu_is_watching()

🗓️ 18 Oct 2026 15:51:22Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

Use-after-free in Linux kernel fprobe handlers when RCU is not watching.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-98861
18 Oct 202615:51
–cve
debiancve
Debian CVE
CVE-2026-98861
18 Oct 202615:51
–debiancve
euvd
EUVD
EUVD-2026-103801
18 Oct 202618:32
–euvd
nvd
NVD
CVE-2026-98861
18 Oct 202616:17
–nvd
ptsecurity
Positive Technologies
PT-2026-117080
18 Oct 202600:00
–ptsecurity
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/trace/fprobe.c"
    ],
    "versions": [
      {
        "version": "56b4cfcf1518245493c60fd39c56978f508f1816",
        "lessThan": "a85d0f00671b4d4527317c10ba018680f7d8d673",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "657b594b2084b39a4bc6d8493aa2140cb00cea49",
        "lessThan": "dd4a0d4993633b45470abf6da4ea0ca563402245",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "657b594b2084b39a4bc6d8493aa2140cb00cea49",
        "lessThan": "e0a6249190402a28f1e2925a81acf573157d55ef",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4f6a9005ed6cfd360ef2520430927f05f92ffb0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6.18.34",
        "lessThan": "6.18.56",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "7.0.11",
        "lessThan": "7.1",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/trace/fprobe.c"
    ],
    "versions": [
      {
        "version": "7.1",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "7.1",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.56",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.10",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc6",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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