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Critical

netfilter: conntrack: remove sprintf usage

Type: advisorySource: Official CVE List1 source record

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 [..]

Announced Source revision 1
Original source ↗

CVE-2026-53002

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-53002

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "9fafcd7b203229c3f3893a475741afc27e276306",
        "lessThan": "2f793ba78470a99f40389b7dc60a81d9f5ad3956",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9fafcd7b203229c3f3893a475741afc27e276306",
        "lessThan": "6bbf829b4c1b44c941c47dd0d710f1393258f3d5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9fafcd7b203229c3f3893a475741afc27e276306",
        "lessThan": "ab64e61c9323fa6de21bd20da1ddb29a0fb65d34",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9fafcd7b203229c3f3893a475741afc27e276306",
        "lessThan": "1c9fb8aeed06790d42cdcd00f6c3ce0b9e926c1e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9fafcd7b203229c3f3893a475741afc27e276306",
        "lessThan": "a8e0a32a23d3f34862af3b4da792ecb3a891a9a3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9fafcd7b203229c3f3893a475741afc27e276306",
        "lessThan": "8e3be0d12615a173fe260cd42753ca7a001acbf2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9fafcd7b203229c3f3893a475741afc27e276306",
        "lessThan": "c08ff52e44945e6ef4ce0790f49ea761b060c45b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9fafcd7b203229c3f3893a475741afc27e276306",
        "lessThan": "6e7066bdb481a87fe88c4fa563e348c03b2d373d",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/netfilter/nf_nat_amanda.c",
      "net/netfilter/nf_nat_sip.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.20"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.20",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.258",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.209",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.175",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.141",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.91",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.33",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.10",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/netfilter/nf_nat_amanda.c",
      "net/netfilter/nf_nat_sip.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-53002

Source reference: /cveMetadata/cveId

Publisher severity

critical

Source reference: /containers/cna/metrics

Event
#40730 · Revision 1
Added to Heist Feed
Publisher date
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