Vulnerability-Lookup

UBUNTU-CVE-2026-98751 (CVE-2026-98751)

Vulnerability from osv_ubuntu – Published: 2026-10-18 16:17 – Updated: 2026-10-30 19:02 – Source website

Details

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

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2026-98751	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-98751	REPORT
	https://git.kernel.org/stable/c/94af6cd832e9b4ce3…	REPORT
	https://git.kernel.org/stable/c/c8ccd3b2013daaf77…	REPORT
	https://git.kernel.org/stable/c/3bc82999fb85cecc7…	REPORT
	https://git.kernel.org/stable/c/845a2737e0f5ffe5c…	REPORT

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

Vulnerability from cvelistv5 – Published: 2026-10-18 15:47 – Updated: 2026-10-30 12:39

Title

tty: abort break signalling on hangup

Summary

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

8 references

URL	Tags
https://git.kernel.org/stable/c/70fa2bec352d9f949…
https://git.kernel.org/stable/c/8224d25534580d079…
https://git.kernel.org/stable/c/8a0f0f9ef41cb80de…
https://git.kernel.org/stable/c/6c9c9367351a461d6…
https://git.kernel.org/stable/c/3bc82999fb85cecc7…
https://git.kernel.org/stable/c/94af6cd832e9b4ce3…
https://git.kernel.org/stable/c/c8ccd3b2013daaf77…
https://git.kernel.org/stable/c/845a2737e0f5ffe5c…

Impacted products

2 products

Vendor	Product	Version
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)
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)

Show details on NVD website

JSON

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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/tty/tty_io.c",
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.10.273",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.224",
              "versionType": "semver"
            },
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              "versionType": "semver"
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              "versionType": "semver"
            },
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              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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