CVE-2015-1421
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Description
A use-after-free flaw was found in the way the Linux kernel's SCTP implementation handled authentication key reference counting during INIT collisions. A remote attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system.
Statement
This issue did not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5.
This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2. Future Linux kernel updates for the respective releases may address this issue.
Additional information
- Bugzilla 1196581: kernel: net: slab corruption from use after free on INIT collisions
- CWE-416: Use After Free
- FAQ: Frequently asked questions about CVE-2015-1421
Common Vulnerability Scoring System (CVSS) Score Details
Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
Red Hat | NVD | |
---|---|---|
CVSS v2 Base Score | 7.1 | 10 |
Attack Vector | Network | Network |
Access Complexity | Medium | Low |
Authentication | None | None |
Confidentiality Impact | None | Complete |
Integrity Impact | None | Complete |
Availability Impact | Complete | Complete |
CVSS v2 Vector
Red Hat: AV:N/AC:M/Au:N/C:N/I:N/A:C
NVD: AV:N/AC:L/Au:N/C:C/I:C/A:C
Acknowledgements
This issue was discovered by Sun Baoliang (Red Hat).
Frequently Asked Questions
Why is Red Hat's CVSS v3 score or Impact different from other vendors?
My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?
What can I do if my product is listed as "Will not fix"?
What can I do if my product is listed as "Fix deferred"?
What is a mitigation?
I have a Red Hat product but it is not in the above list, is it affected?
Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?
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