What is CVE-2019-10638?

CVE-2019-10638 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.5 out of 10. CVE-2019-10638 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2019-10638?

CVE-2019-10638 has a CVSS score of 6.5 out of 10, rated Medium severity. The vector string is CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Is there a patch available for CVE-2019-10638?

No patch is currently available for CVE-2019-10638. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2019-10638 actively exploited?

CVE-2019-10638 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2019-10638

Medium

In the Linux kernel before 5.1.7, a device can be tracked by an attacker using the IP ID values the kernel produces for connection-less protocols (e.g., UDP and ICMP). When such traffic is sent to multiple destination IP addresses, it is possible to obtain hash collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). An attack may be conducted by hosting a crafted web page that uses WebRTC or gQUIC to force UDP traffic to attacker-controlled IP addresses.

Package Linux Kernel

Published 2019-07-05

Last modified 2024-11-21

CVSS version 3.0

Patch available

Awaiting data

CVSS 3.0 score

6.5

out of 10

Medium

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Vector string

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Weakness type

CWE-326

CVE-2019-10638 is classified as CWE-326

See CWE-326 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2019-10638 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.html
Lists
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html
Packet Storm
http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
Securityfocus
http://www.securityfocus.com/bid/109092

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2019:3309
Red Hat
https://access.redhat.com/errata/RHSA-2019:3517
Arxiv
https://arxiv.org/pdf/1906.10478.pdf

Third Party Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.8

Mailing List Release Notes Vendor Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.7

Mailing List Release Notes Vendor Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html
Debian Security
https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
Seclists
https://seclists.org/bugtraq/2019/Aug/13
Seclists
https://seclists.org/bugtraq/2019/Aug/18
Seclists
https://seclists.org/bugtraq/2019/Nov/11
Security
https://security.netapp.com/advisory/ntap-20190806-0001/
Ubuntu Security
https://usn.ubuntu.com/4114-1/
Ubuntu Security
https://usn.ubuntu.com/4115-1/
Ubuntu Security
https://usn.ubuntu.com/4116-1/
Ubuntu Security
https://usn.ubuntu.com/4117-1/
Ubuntu Security
https://usn.ubuntu.com/4118-1/
Debian Security
https://www.debian.org/security/2019/dsa-4495
Debian Security
https://www.debian.org/security/2019/dsa-4497
Oracle
https://www.oracle.com/security-alerts/cpuApr2021.html
Kernel patch commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=355b98553789b646ed97ad801a619ff898471b92
Patch
Kernel patch commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=df453700e8d81b1bdafdf684365ee2b9431fb702
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/355b98553789b646ed97ad801a619ff898471b92
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2019-10638

Severity Medium

CVSS score 6.5 / 10

CVSS version 3.0

Published 2019-07-05

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2019-10638?

CVE-2019-10638 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.5 out of 10 . CVE-2019-10638 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2019-10638?

CVE-2019-10638 has a CVSS score of 6.5 out of 10, rated Medium severity (CVSS 3.0). The vector string is CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
Is there a patch available for CVE-2019-10638?

No patch is currently available for CVE-2019-10638. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2019-10638 actively exploited?

No — CVE-2019-10638 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.