CVE-2026-98751 (GCVE-0-2026-98751)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:47 – Updated: 2026-10-30 12:39
VLAI
Title
tty: abort break signalling on hangup
Summary
In the Linux kernel, the following vulnerability has been resolved: tty: abort break signalling on hangup The break ioctls can race with hangup and end up calling into a tty driver for a device that is already gone or powered down. Drivers must handle this race, but TCSBRK and TCSBRKP should still be aborted to avoid calling back into the driver after a user-controlled timeout (possibly even after the tty has been reopened). Note that drivers should disable any break state on shutdown so just return on hangup (calling break_ctl() again is racy and will most likely fail for drivers handling the race).
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 70fa2bec352d9f949b882af3c380b916e4a29a43 (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 8224d25534580d07925607bbd617daf9c8de26c3 (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 8a0f0f9ef41cb80de4d5da4ae146df3075463f6b (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 6c9c9367351a461d62e5c0a39bffdcfbb40f068b (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 3bc82999fb85cecc7eb6ec1755ee7d698aa1e783 (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 94af6cd832e9b4ce39a8fb59144a8f09ab56fd35 (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < c8ccd3b2013daaf77b98f8a6724fcf4d2c5c52d6 (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 845a2737e0f5ffe5ca8d38de556012b0c9472cdd (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.26
Unaffected: 0 , < 2.6.26 (semver)
Unaffected: 5.10.273 , ≤ 5.10.* (semver)
Unaffected: 5.15.224 , ≤ 5.15.* (semver)
Unaffected: 6.1.191 , ≤ 6.1.* (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.113 , ≤ 6.12.* (semver)
Unaffected: 6.18.56 , ≤ 6.18.* (semver)
Unaffected: 7.2.10 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: abort break signalling on hangup\n\nThe break ioctls can race with hangup and end up calling into a tty\ndriver for a device that is already gone or powered down.\n\nDrivers must handle this race, but TCSBRK and TCSBRKP should still be\naborted to avoid calling back into the driver after a user-controlled\ntimeout (possibly even after the tty has been reopened).\n\nNote that drivers should disable any break state on shutdown so just\nreturn on hangup (calling break_ctl() again is racy and will most likely\nfail for drivers handling the race)."
        }
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      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/70fa2bec352d9f949b882af3c380b916e4a29a43"
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          "url": "https://git.kernel.org/stable/c/8224d25534580d07925607bbd617daf9c8de26c3"
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          "url": "https://git.kernel.org/stable/c/8a0f0f9ef41cb80de4d5da4ae146df3075463f6b"
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    "datePublished": "2026-10-18T15:47:36.026Z",
    "dateReserved": "2026-09-25T10:25:14.368Z",
    "dateUpdated": "2026-10-30T12:39:21.567Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-11-01",
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      "cve": "CVE-2026-98751",
      "id": "msrc_CVE-2026-98751",
      "initial_release_date": "2026-10-20T01:04:42.000Z",
      "product_status:known_affected": "1",
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      "source": "Microsoft CSAF VEX",
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      "title": "tty: abort break signalling on hangup",
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        "metrics": {},
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        "vulnStatus": "Received"
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      "current_release_date": "2026-10-23T03:39:50+00:00",
      "cve": "CVE-2026-98751",
      "id": "CVE-2026-98751",
      "initial_release_date": "2026-10-18T00:00:00+00:00",
      "product_status:known_affected": "264",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tty: abort break signalling on hangup",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98751.json",
      "version": "3"
    }
  }
}



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