Bug 2492329 (CVE-2026-53002) - CVE-2026-53002 kernel: netfilter: conntrack: remove sprintf usage
Summary: CVE-2026-53002 kernel: netfilter: conntrack: remove sprintf usage
Keywords:
Status: NEW
Alias: CVE-2026-53002
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-24 18:06 UTC by OSIDB Bzimport
Modified: 2026-10-01 09:01 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:64770 0 None None None 2026-09-08 01:49:37 UTC
Red Hat Product Errata RHSA-2026:66000 0 None None None 2026-09-09 14:12:31 UTC
Red Hat Product Errata RHSA-2026:66180 0 None None None 2026-09-09 22:05:04 UTC
Red Hat Product Errata RHSA-2026:69089 0 None None None 2026-09-21 00:56:34 UTC
Red Hat Product Errata RHSA-2026:69837 0 None None None 2026-09-22 03:33:41 UTC
Red Hat Product Errata RHSA-2026:69874 0 None None None 2026-09-22 07:16:39 UTC
Red Hat Product Errata RHSA-2026:69906 0 None None None 2026-09-22 08:28:18 UTC
Red Hat Product Errata RHSA-2026:73645 0 None None None 2026-09-30 00:46:11 UTC
Red Hat Product Errata RHSA-2026:74174 0 None None None 2026-10-01 09:01:37 UTC

Description OSIDB Bzimport 2026-06-24 18:06:07 UTC 
In the Linux kernel, the following vulnerability has been resolved:

netfilter: conntrack: remove sprintf usage

Replace it with scnprintf, the buffer sizes are expected to be large enough
to hold the result, no need for snprintf+overflow check.

Increase buffer size in mangle_content_len() while at it.

BUG: KASAN: stack-out-of-bounds in vsnprintf+0xea5/0x1270
Write of size 1 at addr [..]
 vsnprintf+0xea5/0x1270
 sprintf+0xb1/0xe0
 mangle_content_len+0x1ac/0x280
 nf_nat_sdp_session+0x1cc/0x240
 process_sdp+0x8f8/0xb80
 process_invite_request+0x108/0x2b0
 process_sip_msg+0x5da/0xf50
 sip_help_tcp+0x45e/0x780
 nf_confirm+0x34d/0x990
 [..]
Comment 1 Keith Grant 2026-06-25 18:46:00 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062447-CVE-2026-53002-8577@gregkh/T
Comment 5 errata-xmlrpc 2026-09-08 01:49:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:64770 https://access.redhat.com/errata/RHSA-2026:64770
Comment 6 errata-xmlrpc 2026-09-09 14:12:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:66000 https://access.redhat.com/errata/RHSA-2026:66000
Comment 7 errata-xmlrpc 2026-09-09 22:05:03 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:66180 https://access.redhat.com/errata/RHSA-2026:66180
Comment 8 Jon Orris 2026-09-21 00:56:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:69089 https://access.redhat.com/errata/RHSA-2026:69089
Comment 9 Jon Orris 2026-09-22 03:33:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:69837 https://access.redhat.com/errata/RHSA-2026:69837
Comment 10 Jon Orris 2026-09-22 07:16:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:69874 https://access.redhat.com/errata/RHSA-2026:69874
Comment 11 Jon Orris 2026-09-22 08:28:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:69906 https://access.redhat.com/errata/RHSA-2026:69906
Comment 12 Jon Orris 2026-09-30 00:46:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:73645 https://access.redhat.com/errata/RHSA-2026:73645
Comment 13 Jon Orris 2026-10-01 09:01:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:74174 https://access.redhat.com/errata/RHSA-2026:74174
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