Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-53002

netfilter: conntrack: remove sprintf usage
Back to all
CVE

CVE-2026-53002

netfilter: conntrack: remove sprintf usage

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 manglecontentlen() 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

 manglecontentlen+0x1ac/0x280

 nfnatsdp_session+0x1cc/0x240

 process_sdp+0x8f8/0xb80

 processinviterequest+0x108/0x2b0

 processsipmsg+0x5da/0xf50

 siphelptcp+0x45e/0x780

 nf_confirm+0x34d/0x990

 [..]

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/1c9fb8aeed06790d42cdcd00f6c3ce0b9e926c1e, https://git.kernel.org/stable/c/2f793ba78470a99f40389b7dc60a81d9f5ad3956, https://git.kernel.org/stable/c/6bbf829b4c1b44c941c47dd0d710f1393258f3d5, https://git.kernel.org/stable/c/6e7066bdb481a87fe88c4fa563e348c03b2d373d, https://git.kernel.org/stable/c/8e3be0d12615a173fe260cd42753ca7a001acbf2, https://git.kernel.org/stable/c/a8e0a32a23d3f34862af3b4da792ecb3a891a9a3, https://git.kernel.org/stable/c/ab64e61c9323fa6de21bd20da1ddb29a0fb65d34, https://git.kernel.org/stable/c/c08ff52e44945e6ef4ce0790f49ea761b060c45b, https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53002.json, https://access.redhat.com/security/cve/CVE-2026-53002, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53002.json, https://nvd.nist.gov/vuln/detail/CVE-2026-53002, https://bugzilla.redhat.com/show_bug.cgi?id=2492329, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00354%
EPSS Percentile
0.28778%
Introduced Version
9fafcd7b203229c3f3893a475741afc27e276306,2.6.20,5.11.0,5.16.0,6.2.0,6.7.0,6.13.0,6.19.0,0
Fix Available
6e7066bdb481a87fe88c4fa563e348c03b2d373d,5.10.258,5.15.209,6.1.175,6.6.141,6.12.91,6.18.33,7.0.10,6.1.176-1,5.10.259-1,6.1.176-1~deb11u1,6.12.94-1,4.15.0-254.266,4.15.0-1195.208,5.4.0-1162.173~18.04.1,4.15.0-1205.220,4.15.0-1188.205,5.4.0-1165.174~18.04.1,5.4.0-234.254~18.04.1,5.4.0-1108.113~18.04.1,4.15.0-1177.182,4.15.0-1158.169,5.4.0-1145.158~18.04.1,5.4.0-234.254,5.4.0-1162.173,5.15.0-1112.119~20.04.1,5.4.0-1167.173,5.15.0-1117.126~20.04.1,5.15.0-1117.126~20.04.2,5.4.0-1121.128,5.4.0-1165.174,5.15.0-186.196~20.04.1,5.4.0-1108.113,5.15.0-1106.110~20.04.1,5.15.0-1107.113~20.04.1,5.4.0-1066.69,5.15.0-184.194~20.04.1,5.15.0-1064.66~20.04.1,5.4.0-1160.170,5.15.0-1109.115~20.04.1,5.4.0-1145.158,5.4.0-1080.84,6.8.0-136.136,6.8.0-1061.64,6.8.0-1063.71,6.8.0-1062.69,6.8.0-1064.72,6.8.0-1059.67,6.8.0-1046.50,7.0.0-28.28~24.04.1,6.8.0-1061.62,6.8.0-136.136.2,6.8.0-1059.62,7.0.0-1016.16~24.04.1,6.8.0-1059.62.1,6.8.0-1030.31,6.8.0-1058.61,6.8.0-1061.65,6.8.0-1033.34,5.15.0-186.196,5.15.0-1112.119,6.8.0-1061.64~22.04.1,5.15.0-1117.126,6.8.0-1063.71~22.04.1,6.8.0-1062.69~22.04.1,5.15.0-1112.122,6.8.0-1064.72~22.04.1,5.15.0-1108.114,5.15.0-1095.103,6.8.0-136.136~22.04.1,5.15.0-1106.110,6.8.0-1061.62~22.04.1,5.15.0-1107.113,5.15.0-1104.109,5.15.0-184.194,6.8.0-136.136.2~22.04.1,5.15.0-1107.108,6.8.0-1059.62~22.04.1,5.15.0-1064.66,5.15.0-1053.53,5.15.0-1109.115,6.8.0-1058.61~22.04.1,6.8.0-136.136~22.04.3,5.15.0-1075.79,0:5.10.258-257.1041.amzn2,0:1.0-0.amzn2,0:5.15.209-147.245.amzn2,1:6.18.33-63.124.amzn2023,1:1.0-0.amzn2023,1:6.1.175-219.357.amzn2023,1:6.12.92-122.166.amzn2023

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading