PT-2014-2407 · Linux+1 · Linux Kernel+1

Denys Fedoryshchenko · Published 2014-02-15 · Updated 2023-02-14 · CVE-2012-6638

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 3.2.24

Description The issue allows remote attackers to cause a denial of service by consuming kernel resources through a flood of SYN+FIN TCP packets. This is achieved by exploiting the tcp rcv state process function in net/ipv4/tcp input.c.

Recommendations For Linux kernel versions prior to 3.2.24, update to version 3.2.24 or later to resolve the issue. As a temporary workaround, consider implementing network traffic filtering to restrict the influx of SYN+FIN TCP packets.

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2012-6638

RHSA-2014:0433

RHSA-2014:0772

RHSA-2014_0433

USN-1514-1

USN-1529-1

USN-1651-1

USN-1653-1

Affected Products

Linux Kernel

Red Hat

References · 19

• https://github.com/torvalds/linux/commit/fdf5af0daf8019cec2396cdef8fb042d80fe71fa · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2012-6638 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2012-6638 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2012-6638 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2012-6638 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2012-6638 · Security Note
• http://kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.24 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1529-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1653-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1514-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2012-6638 · Vendor Advisory
• https://ubuntu.com/security/CVE-2012-6638 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1651-1 · Vendor Advisory
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fdf5af0daf8019cec2396cdef8fb042d80fe71fa · Note
• https://access.redhat.com/security/cve/CVE-2012-6638 · Note