CVE-2015-3636

Medium

The ping_unhash function in net/ipv4/ping.c in the Linux kernel before 4.0.3 does not initialize a certain list data structure during an unhash operation, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) by leveraging the ability to make a SOCK_DGRAM socket system call for the IPPROTO_ICMP or IPPROTO_ICMPV6 protocol, and then making a connect system call after a disconnect.

Package Linux Kernel
Published 2015-08-06
Last modified 2026-05-06
CVSS version 2.0
Patch available
Awaiting data

CVSS 2.0 score

4.9

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
User Interaction
Scope
Confidentiality
Low
Integrity
None
Availability
Vector string
AV:L/AC:L/Au:N/C:N/I:N/A:C

References

The following references provide additional information about CVE-2015-3636 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2015-3636?

    CVE-2015-3636 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10 . CVE-2015-3636 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2015-3636?

    CVE-2015-3636 has a CVSS score of 4.9 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C .

  • Is there a patch available for CVE-2015-3636?

    No patch is currently available for CVE-2015-3636. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2015-3636 actively exploited?

    No — CVE-2015-3636 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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