Critical severity9.8NVD Advisory· Published Jun 24, 2026· Updated Sep 10, 2026
CVE-2026-53002
CVE-2026-53002
Description
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 [..]
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
95- osv-coords89 versionspkg:rpm/almalinux/kernel-rtpkg:rpm/almalinux/kernel-debugpkg:rpm/almalinux/kernel-debug-corepkg:rpm/almalinux/kernel-toolspkg:rpm/almalinux/kernel-tools-libspkg:rpm/almalinux/kernel-64k-debug-modules-corepkg:rpm/almalinux/kernel-rt-64k-corepkg:rpm/almalinux/kernel-rt-64k-modules-corepkg:rpm/almalinux/kernel-rt-debug-modules-corepkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/almalinux/kernelpkg:rpm/almalinux/bpftoolpkg:rpm/almalinux/kernel-modules-extrapkg:rpm/almalinux/kernel-64k-develpkg:rpm/almalinux/rtlapkg:rpm/almalinux/kernel-modulespkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/almalinux/kernel-debug-develpkg:rpm/almalinux/kernel-tools-libs-develpkg:rpm/almalinux/kernel-zfcpdump-corepkg:rpm/almalinux/kernel-zfcpdump-develpkg:rpm/almalinux/python3-perfpkg:rpm/almalinux/kernel-rt-debugpkg:rpm/almalinux/kernel-rt-debug-corepkg:rpm/almalinux/kernel-rt-develpkg:rpm/almalinux/kernel-rt-modulespkg:rpm/almalinux/kernel-64kpkg:rpm/almalinux/kernel-64k-debug-corepkg:rpm/almalinux/kernel-64k-debug-develpkg:rpm/almalinux/kernel-debug-devel-matchedpkg:rpm/almalinux/kernel-debug-uki-virtpkg:rpm/almalinux/kernel-rt-64k-debug-develpkg:rpm/almalinux/kernel-rt-64k-develpkg:rpm/almalinux/kernel-rt-64k-modulespkg:rpm/almalinux/kernel-rt-64k-modules-extrapkg:rpm/almalinux/kernel-uki-virtpkg:rpm/almalinux/kernel-rt-corepkg:rpm/almalinux/kernel-rt-debug-develpkg:rpm/almalinux/kernel-zfcpdump-modules-extrapkg:rpm/almalinux/kernel-64k-debug-modulespkg:rpm/almalinux/kernel-64k-modulespkg:rpm/almalinux/kernel-uki-virt-addonspkg:rpm/almalinux/kernel-zfcpdumppkg:rpm/almalinux/kernel-64k-debug-modules-extrapkg:rpm/almalinux/kernel-rt-64k-debugpkg:rpm/almalinux/kernel-abi-stablelistspkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/almalinux/kernel-debug-modulespkg:rpm/almalinux/kernel-debug-modules-extrapkg:rpm/almalinux/kernel-develpkg:rpm/almalinux/kernel-64k-corepkg:rpm/almalinux/kernel-64k-debugpkg:rpm/almalinux/kernel-64k-debug-devel-matchedpkg:rpm/almalinux/kernel-64k-devel-matchedpkg:rpm/almalinux/kernel-64k-modules-corepkg:rpm/almalinux/kernel-64k-modules-extrapkg:rpm/almalinux/kernel-debug-modules-corepkg:rpm/almalinux/kernel-devel-matchedpkg:rpm/almalinux/kernel-modules-corepkg:rpm/almalinux/kernel-rt-64kpkg:rpm/almalinux/kernel-rt-64k-debug-corepkg:rpm/almalinux/kernel-rt-64k-debug-modules-corepkg:rpm/almalinux/kernel-rt-64k-debug-modules-extrapkg:rpm/almalinux/kernel-rt-modules-corepkg:rpm/almalinux/kernel-zfcpdump-devel-matchedpkg:rpm/almalinux/kernel-zfcpdump-modules-corepkg:rpm/almalinux/libperfpkg:rpm/almalinux/kernel-docpkg:rpm/almalinux/perfpkg:rpm/almalinux/rvpkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/almalinux/kernel-zfcpdump-modulespkg:linux/kernelpkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0pkg:rpm/almalinux/kernel-headerspkg:rpm/almalinux/kernel-rt-debug-modulespkg:rpm/almalinux/kernel-rt-modules-extrapkg:rpm/almalinux/kernel-rt-debug-modules-extrapkg:rpm/almalinux/kernel-corepkg:rpm/almalinux/kernel-cross-headerspkg:rpm/almalinux/kernel-rt-64k-debug-modules
< 4.18.0-553.160.1.rt7.501.el8_10+ 88 more
- (no CPE)range: < 4.18.0-553.160.1.rt7.501.el8_10
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- (no CPE)range: < 5.14.0-687.46.1.el9_8
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- (no CPE)range: < 6.12.0-160000.37.1
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- (no CPE)range: < 4.18.0-553.160.1.el8_10
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- (no CPE)range: < 5.14.0-687.46.1.el9_8
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- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 6.12.0-160000.37.1
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- (no CPE)range: < 4.18.0-553.160.1.rt7.501.el8_10
- (no CPE)range: < 4.18.0-553.160.1.rt7.501.el8_10
- (no CPE)range: < 4.18.0-553.160.1.rt7.501.el8_10
- (no CPE)range: < 4.18.0-553.160.1.rt7.501.el8_10
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
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- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 4.18.0-553.160.1.rt7.501.el8_10
- (no CPE)range: < 4.18.0-553.160.1.rt7.501.el8_10
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 5.14.0-687.46.1.el9_8
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: >= 2.6.20, < 5.10.258
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1.160000.2.19
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 4.18.0-553.160.1.rt7.501.el8_10
- (no CPE)range: < 4.18.0-553.160.1.rt7.501.el8_10
- (no CPE)range: < 4.18.0-553.160.1.rt7.501.el8_10
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 4.18.0-553.160.1.el8_10
- (no CPE)range: < 5.14.0-687.46.1.el9_8
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
15- git.kernel.org/stable/c/1c9fb8aeed06790d42cdcd00f6c3ce0b9e926c1envdPatch
- git.kernel.org/stable/c/2f793ba78470a99f40389b7dc60a81d9f5ad3956nvdPatch
- git.kernel.org/stable/c/6bbf829b4c1b44c941c47dd0d710f1393258f3d5nvdPatch
- git.kernel.org/stable/c/6e7066bdb481a87fe88c4fa563e348c03b2d373dnvdPatch
- git.kernel.org/stable/c/8e3be0d12615a173fe260cd42753ca7a001acbf2nvdPatch
- git.kernel.org/stable/c/a8e0a32a23d3f34862af3b4da792ecb3a891a9a3nvdPatch
- git.kernel.org/stable/c/ab64e61c9323fa6de21bd20da1ddb29a0fb65d34nvdPatch
- git.kernel.org/stable/c/c08ff52e44945e6ef4ce0790f49ea761b060c45bnvdPatch
- access.redhat.com/security/cve/CVE-2026-53002nvdThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdThird Party Advisory
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53002.jsonnvdThird Party Advisory
- access.redhat.com/errata/RHSA-2026:64770nvd
- access.redhat.com/errata/RHSA-2026:66000nvd
- access.redhat.com/errata/RHSA-2026:66180nvd
- cert-portal.siemens.com/productcert/html/ssa-019113.htmlnvd
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