netfilter: conntrack: remove sprintf usage

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  "url": "https://osv.dev/vulnerability/CVE-2026-53002",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "netfilter: conntrack: remove sprintf usage",
    "summary": "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 [..]",
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      "modified": "2026-10-28T02:30:35.672866115Z",
      "provider": "osv",
      "references": [
        "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",
        "https://git.kernel.org/stable/c/2f793ba78470a99f40389b7dc60a81d9f5ad3956",
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        "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/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",
        "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"
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  "source_id": "core-osv",
  "document_id": 503044,
  "published_at": "2026-06-24T16:29:14.391+00:00"
}