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CVE-2026-74657

🗓️ 22 Aug 2026 15:32:31Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 5 Views

Linux kernel fib_nlmsg_size() underestimates RTA_VIA nexthop size causing -EMSGSIZE and potential panic.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-74657 ipv4: Fix fib_nlmsg_size() for RTA_VIA nexthops
22 Aug 202615:32
cvelist
debiancve
Debian CVE
CVE-2026-74657
22 Aug 202615:32
debiancve
euvd
EUVD
EUVD-2026-64594
22 Aug 202615:32
euvd
nvd
NVD
CVE-2026-74657
22 Aug 202616:16
nvd
osv
OSV
DEBIAN-CVE-2026-74657
22 Aug 202616:16
osv
ptsecurity
Positive Technologies
PT-2026-79662
22 Aug 202600:00
ptsecurity
susecve
SUSE CVE
SUSE CVE-2026-74657
23 Aug 202600:05
susecve
Vulners
CNA
Node
OR
linuxlinux_kernelRange5.25.15.216
linuxlinux_kernelRange5.16.06.1.183
linuxlinux_kernelRange6.2.06.6.152
linuxlinux_kernelRange6.7.06.12.104
linuxlinux_kernelRange6.13.06.18.45
linuxlinux_kernelRange6.19.07.1.9
linuxlinux_kernelRange7.2.0
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ipv4/fib_semantics.c"
    ],
    "versions": [
      {
        "version": "d15662682db232da77136cd348f4c9df312ca6f9",
        "lessThan": "0f0ca602941d0a81ae9514943ca06c55159c6385",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d15662682db232da77136cd348f4c9df312ca6f9",
        "lessThan": "5307a53599fa762c06e475ee4a375252074fd324",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d15662682db232da77136cd348f4c9df312ca6f9",
        "lessThan": "7f80ad373ce4a7af5367ff273cea0f16e91387f3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d15662682db232da77136cd348f4c9df312ca6f9",
        "lessThan": "4a5dfbae5179f6574695012a980476254df2d295",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d15662682db232da77136cd348f4c9df312ca6f9",
        "lessThan": "a59edda6eda1252340354322d8ab318b2e9052fb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d15662682db232da77136cd348f4c9df312ca6f9",
        "lessThan": "9b22f13524fa0de0d963bbd3002df6c28bae3395",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d15662682db232da77136cd348f4c9df312ca6f9",
        "lessThan": "4ff9548d84945d2cbf9e4c207288063a200ea397",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ipv4/fib_semantics.c"
    ],
    "versions": [
      {
        "version": "5.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.2",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.216",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.183",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.152",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.104",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.45",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.9",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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22 Aug 2026 16:16Current
5.5Medium risk
Vulners AI Score5.5
5