CVE-2026-98695 (GCVE-0-2026-98695)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:46 – Updated: 2026-10-30 12:38
VLAI
Title
USB: serial: fix ioctl hangup race
Summary
In the Linux kernel, the following vulnerability has been resolved: USB: serial: fix ioctl hangup race The tty ioctls can race with hangup and end up calling into a tty driver for a device that is already gone or powered down. Serialise the callbacks using the tty port mutex and add the missing checks to make sure the port has not been hung up before accessing port driver data or hardware. This specifically avoids dereferencing a NULL-pointer if a device is disconnected during lengthy break signalling. Note that TIOCGICOUNT and TIOCMIWAIT do not access port driver data or hardware and are therefore not affected by the race.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6820 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < c7ef25e96dc3f808eb891bbbd43b6a682846eb0c (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 98f0a25134bfce44ebd1db0341fa0e8603ff276d (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 3a728adbed9fd822f99a9d9c5ebad5c3b565ba4a (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 24d6edb6bd7f7a9e6cee2f8fe435781daab8aa0f (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < ae0da9a5c1ca95c20cc5feffd511ce6eae75924e (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 4597ddd6168ae2a4123404e5f0871f1070dc7773 (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < 7912a95d1345c77d8d63b530b00c118700b78abd (git)
Affected: f34d7a5b7010b82fe97da95496b9971435530062 , < ae0e61d95677efa778379853e495d748e6efbf95 (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.
Show details on NVD website
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          "url": "https://git.kernel.org/stable/c/98f0a25134bfce44ebd1db0341fa0e8603ff276d"
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    "datePublished": "2026-10-18T15:46:19.498Z",
    "dateReserved": "2026-09-25T10:25:14.364Z",
    "dateUpdated": "2026-10-30T12:38:47.405Z",
    "state": "PUBLISHED"
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        "id": "CVE-2026-98695",
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        "metrics": {},
        "published": "2026-10-18T16:17:22.960",
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      "current_release_date": "2026-10-30T06:49:22+00:00",
      "cve": "CVE-2026-98695",
      "id": "CVE-2026-98695",
      "initial_release_date": "2026-10-18T00:00:00+00:00",
      "product_status:known_affected": "279",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: USB: serial: fix ioctl hangup race",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98695.json",
      "version": "3"
    }
  }
}



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