CVE-2026-53002
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 [..]
Key facts
- CVSS score
- 9.8 (v3.1)
- Severity
- CRITICAL
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
- CWE-787
- EPSS score
- 0.4% (29th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2026-38870)
- Published
- June 24, 2026
- NVD last modified
- October 15, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2026-38870 in the EU Vulnerability Database. Last updated in EUVD on October 15, 2026.
View on the EU Vulnerability DatabaseAffected products
- linux / linux kernel
- redhat / enterprise linux
- redhat / enterprise linux
- redhat / enterprise linux
- redhat / enterprise linux
Certified products that may be affected
31 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Red Hat Enterprise Linux 8 NSS Cryptographic Module - Red Hat, Inc. - FIPS 140 5513 - active
- Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, LLC - FIPS 140 5461 - active
- Red Hat Enterprise Linux 9 Kernel Cryptographic API - Red Hat, Inc. - FIPS 140 5445 - active
- Red Hat Enterprise Linux 9 libgcrypt - Red Hat, Inc. - FIPS 140 5366 - active
- Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, Inc. - FIPS 140 5089 - active
See all 31 in the Security Certifications Explorer.
References
- https://access.redhat.com/errata/RHSA-2026:64770
- https://access.redhat.com/errata/RHSA-2026:66000
- https://access.redhat.com/errata/RHSA-2026:66180
- https://access.redhat.com/security/cve/CVE-2026-53002(Third Party Advisory)
- https://bugzilla.redhat.com/show_bug.cgi?id=2492329(Third Party Advisory)
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
- https://git.kernel.org/stable/c/1c9fb8aeed06790d42cdcd00f6c3ce0b9e926c1e(Patch)
- https://git.kernel.org/stable/c/2f793ba78470a99f40389b7dc60a81d9f5ad3956(Patch)
- https://git.kernel.org/stable/c/6bbf829b4c1b44c941c47dd0d710f1393258f3d5(Patch)
- https://git.kernel.org/stable/c/6e7066bdb481a87fe88c4fa563e348c03b2d373d(Patch)
- https://git.kernel.org/stable/c/8e3be0d12615a173fe260cd42753ca7a001acbf2(Patch)
- https://git.kernel.org/stable/c/a8e0a32a23d3f34862af3b4da792ecb3a891a9a3(Patch)
- https://git.kernel.org/stable/c/ab64e61c9323fa6de21bd20da1ddb29a0fb65d34(Patch)
- https://git.kernel.org/stable/c/c08ff52e44945e6ef4ce0790f49ea761b060c45b(Patch)
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53002.json(Third Party Advisory)
Last updated October 15, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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