CVE-2015-8953 — MEDIUM (5.5)

Q: How severe is CVE-2015-8953?

CVE-2015-8953 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2015-8953?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.

Vulnerability Description

fs/overlayfs/copy_up.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service (dentry reference leak) via filesystem operations on a large file in a lower overlayfs layer.

CVSS Score

5.5

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Linux	Linux Kernel	<= 4.2.5

Related Weaknesses (CWE)

CWE-399

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ab79efExploitPatchVendor Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.6Release NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2016/08/23/9ExploitThird Party Advisory
http://www.securityfocus.com/bid/92611
https://bugzilla.redhat.com/show_bug.cgi?id=1367814Issue TrackingThird Party AdvisoryVDB Entry
https://github.com/torvalds/linux/commit/ab79efab0a0ba01a74df782eb7fa44b044dae8bPatch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ab79efExploitPatchVendor Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.6Release NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2016/08/23/9ExploitThird Party Advisory
http://www.securityfocus.com/bid/92611
https://bugzilla.redhat.com/show_bug.cgi?id=1367814Issue TrackingThird Party AdvisoryVDB Entry
https://github.com/torvalds/linux/commit/ab79efab0a0ba01a74df782eb7fa44b044dae8bPatch

FAQ

What is CVE-2015-8953?

CVE-2015-8953 is a vulnerability with a CVSS score of 5.5 (MEDIUM). fs/overlayfs/copy_up.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service (dentry reference leak) via filesystem operations on ...

How severe is CVE-2015-8953?

CVE-2015-8953 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2015-8953?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.