CVE-2026-98790

Status: ReceivedUnscored—

Severity—Unscored

Exploitation probability0.17 %higher than 6% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

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

perf: Fix race between perf_event_exit_task() and perf_pending_task()

A race condition exists between perf_event_exit_task() and perf_pending_task() during begin_new_exec().

During begin_new_exec(), perf_event_exit_task() may be called, and the PF_EXITING flag is not set on task. So perf_sigtrap() continues to execute and triggers WARN_ON_ONCE(event->ctx->task != current).

Since both task exit and exec paths can call perf_event_exit_task() which sets ctx->task to TASK_TOMBSTONE, fix this by explicitly checking if event->ctx->task equals TASK_TOMBSTONE and dropping the redundant PF_EXITING check.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.17 %
Percentile among all scored CVEs: 6
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux Kernel^AI

References

Show 4 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-98790",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "97ba62b278674293762c3d91f724f1bb922f04e0",
              "lessThan": "672b8a9ce8f51b991481dfde26fba5cc4340a91a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "97ba62b278674293762c3d91f724f1bb922f04e0",
              "lessThan": "524063fea29f8a841e49927ea7a8085194ad3ec2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "97ba62b278674293762c3d91f724f1bb922f04e0",
              "lessThan": "81e61e3f8befa1bae3ec8e779d8ada5e5e362c21",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "97ba62b278674293762c3d91f724f1bb922f04e0",
              "lessThan": "ffb684f2aa141eeb0caa6308422e7e05d1ded7c4",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "kernel/events/core.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.13",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "kernel/events/core.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-18T16:17:32.987",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/524063fea29f8a841e49927ea7a8085194ad3ec2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/672b8a9ce8f51b991481dfde26fba5cc4340a91a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/81e61e3f8befa1bae3ec8e779d8ada5e5e362c21",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ffb684f2aa141eeb0caa6308422e7e05d1ded7c4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix race between perf_event_exit_task() and perf_pending_task()\n\nA race condition exists between perf_event_exit_task() and\nperf_pending_task() during begin_new_exec().\n\nDuring begin_new_exec(), perf_event_exit_task() may be called, and the\nPF_EXITING flag is not set on task. So perf_sigtrap() continues to execute\nand triggers WARN_ON_ONCE(event->ctx->task != current).\n\nSince both task exit and exec paths can call perf_event_exit_task() which\nsets ctx->task to TASK_TOMBSTONE, fix this by explicitly checking if\nevent->ctx->task equals TASK_TOMBSTONE and dropping the redundant\nPF_EXITING check."
    }
  ],
  "lastModified": "2026-10-19T10:19:43.050",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}