CVE-2019-11479

CVE Details

Release Date:2019-06-18

Description


Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commits 967c05aee439e6e5d7d805e195b3a20ef5c433d6 and 5f3e2bf008c2221478101ee72f5cb4654b9fc363.

See more information about CVE-2019-11479 from MITRE CVE dictionary and NIST NVD


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 7.5 Base Metrics: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Access Vector: Network Attack Complexity: Low
Privileges Required: None User Interaction: None
Scope: Unchanged Confidentiality Impact: None
Integrity Impact: None Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 5 (kernel-uek)ELSA-2019-46892019-06-17
Oracle Linux version 6 (dtrace-modules-3.8.13-118.35.2.el6uek)ELSA-2019-46862019-06-17
Oracle Linux version 6 (kernel)ELSA-2019-14882019-06-18
Oracle Linux version 6 (kernel-uek)ELSA-2019-46842019-06-17
Oracle Linux version 6 (kernel-uek)ELSA-2019-46862019-06-17
Oracle Linux version 6 (kernel-uek)ELSA-2019-46892019-06-17
Oracle Linux version 7 (dtrace-modules-3.8.13-118.35.2.el7uek)ELSA-2019-46862019-06-17
Oracle Linux version 7 (kernel)ELSA-2019-14812019-06-18
Oracle Linux version 7 (kernel-uek)ELSA-2019-46842019-06-17
Oracle Linux version 7 (kernel-uek)ELSA-2019-46852019-06-17
Oracle Linux version 7 (kernel-uek)ELSA-2019-46862019-06-17
Oracle Linux version 8 (kernel)ELSA-2019-14792019-07-30
Oracle VM version 3.4 (kernel-uek)OVMSA-2019-00262019-06-17



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

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