Bug 2175903 (CVE-2023-1206) - CVE-2023-1206 kernel: hash collisions in the IPv6 connection lookup table
Summary: CVE-2023-1206 kernel: hash collisions in the IPv6 connection lookup table
Keywords:
Status: NEW
Alias: CVE-2023-1206
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2176117 2176118 2176119 2176120 2217240 2233500 2233502
Blocks: 2174096
TreeView+ depends on / blocked
 
Reported: 2023-03-06 18:10 UTC by Alex
Modified: 2024-11-19 19:58 UTC (History)
52 users (show)

Fixed In Version: kernel 6.5-rc1
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2023:6835 0 None None None 2023-11-09 07:10:50 UTC
Red Hat Product Errata RHBA-2023:7268 0 None None None 2023-11-15 18:25:19 UTC
Red Hat Product Errata RHBA-2023:7328 0 None None None 2023-11-16 11:38:50 UTC
Red Hat Product Errata RHBA-2023:7338 0 None None None 2023-11-16 18:04:11 UTC
Red Hat Product Errata RHBA-2023:7343 0 None None None 2023-11-20 01:58:38 UTC
Red Hat Product Errata RHBA-2023:7346 0 None None None 2023-11-20 09:25:39 UTC
Red Hat Product Errata RHSA-2023:5603 0 None None None 2023-10-10 15:25:02 UTC
Red Hat Product Errata RHSA-2023:5604 0 None None None 2023-10-10 15:33:09 UTC
Red Hat Product Errata RHSA-2023:5627 0 None None None 2023-10-10 16:26:21 UTC
Red Hat Product Errata RHSA-2023:6583 0 None None None 2023-11-07 08:20:15 UTC
Red Hat Product Errata RHSA-2023:6901 0 None None None 2023-11-14 15:15:01 UTC
Red Hat Product Errata RHSA-2023:7077 0 None None None 2023-11-14 15:20:37 UTC

Description Alex 2023-03-06 18:10:51 UTC 
A flaw in the Linux Kernel found in the Linux kernel’s networking stack which permits attackers to force hash collisions in the IPv6 connection lookup table. This results in a significant increase in the cost of
lookups, causing increased CPU utilization. This significant CPU usage increase in the Linux kernel subjected to a modified form of the classic IPv6 SYN-Flood. The actual impact of this issue may be a denial of service (due to heightened CPU usage) to hosts which can receive malicious IPv6 traffic.
Comment 8 Alex 2023-06-25 09:58:11 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2217240]
Comment 19 Salvatore Bonaccorso 2023-08-16 18:56:19 UTC 
Is https://git.kernel.org/linus/d11b0df7ddf1831f3e170972f43186dad520bfcc the fix for this issue? (which would be in 6.5-rc4)?
Comment 20 Alex 2023-08-21 11:16:21 UTC 
In reply to comment #19:
> Is https://git.kernel.org/linus/d11b0df7ddf1831f3e170972f43186dad520bfcc the
> fix for this issue? (which would be in 6.5-rc4)?

Yes, the similar upstream fix has been merged into net.git: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=d11b0df7ddf1831f3e170972f43186dad520bfcc

The previous ( https://lore.kernel.org/netdev/CANn89i%2B6d9K1VwNK1Joc-Yb_4jAfV_YFzk%3Dz_K2_Oy%2BxJHSn_g%40mail.gmail.com/T/ )
were not accepted.
Comment 23 Justin M. Forbes 2023-09-25 16:41:51 UTC 
This was fixed for Fedora with the 6.4.8 stable kernel updates.
Comment 24 errata-xmlrpc 2023-10-10 15:24:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2023:5603 https://access.redhat.com/errata/RHSA-2023:5603
Comment 25 errata-xmlrpc 2023-10-10 15:33:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2023:5604 https://access.redhat.com/errata/RHSA-2023:5604
Comment 26 errata-xmlrpc 2023-10-10 16:26:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2023:5627 https://access.redhat.com/errata/RHSA-2023:5627
Comment 28 errata-xmlrpc 2023-11-07 08:20:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:6583 https://access.redhat.com/errata/RHSA-2023:6583
Comment 29 errata-xmlrpc 2023-11-14 15:14:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:6901 https://access.redhat.com/errata/RHSA-2023:6901
Comment 30 errata-xmlrpc 2023-11-14 15:20:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:7077 https://access.redhat.com/errata/RHSA-2023:7077
Comment 31 oilumiun12 2023-12-18 08:28:15 UTC Comment hidden (spam)
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