Vulnerability-Lookup

FKIE_CVE-2026-46323

Vulnerability from fkie_nvd - Published: 2026-06-09 13:16 - Updated: 2026-08-24 13:18

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: net: gro: don't merge zcopy skbs skb_gro_receive() can currently copy frags between the source and GRO skb, without checking the zerocopy status, and in particular the SKBFL_MANAGED_FRAG_REFS flag. When SKBFL_MANAGED_FRAG_REFS is set, the skb doesn't hold a reference on the pages in shinfo->frags. Appending those frags to another skb's frags without fixing up the page refcount can lead to UAF. When either the last skb in the GRO chain (the one we would append frags to) or the source skb is zerocopy, don't merge the skbs.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1f9c828556416fbe3f49386708ce999fc4d4da06	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3c6cc9f2ca65b6dd61b1af75452dc0e1cd0aad8d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/44bea2032af0425e4ce6d26a8af0ede79db49ec1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/479084ae0e1d9cb7929cb4298d35623de189f80a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4db79a322db8c97f7b73b8a347395ef4d685eb40	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e334cbf3388fd9334503a778a82d9e9f14dd2f71	Patch
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:27708	Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:27731	Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:27735	Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:36018	Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:44230
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:44231
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:44259
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:44262
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:44270
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:47727
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-46323	Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2479832	Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46323.json	Third Party Advisory

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1

JSON

To clipboard

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: gro: don\u0027t merge zcopy skbs\n\nskb_gro_receive() can currently copy frags between the source and GRO\nskb, without checking the zerocopy status, and in particular the\nSKBFL_MANAGED_FRAG_REFS flag.\n\nWhen SKBFL_MANAGED_FRAG_REFS is set, the skb doesn\u0027t hold a reference\non the pages in shinfo-\u003efrags. Appending those frags to another skb\u0027s\nfrags without fixing up the page refcount can lead to UAF.\n\nWhen either the last skb in the GRO chain (the one we would append\nfrags to) or the source skb is zerocopy, don\u0027t merge the skbs."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: gro: no fusionar skbs zcopy\n\nskb_gro_receive() actualmente puede copiar fragmentos entre el skb de origen y el GRO, sin verificar el estado de zerocopy, y en particular el indicador SKBFL_MANAGED_FRAG_REFS.\n\nCuando SKBFL_MANAGED_FRAG_REFS est\u00e1 establecido, el skb no mantiene una referencia en las p\u00e1ginas en shinfo-\u003efrags. Adjuntar esos fragmentos a los fragmentos de otro skb sin corregir el recuento de referencias de la p\u00e1gina puede llevar a UAF.\n\nCuando el \u00faltimo skb en la cadena GRO (aquel al que adjuntar\u00edamos fragmentos) o el skb de origen es zerocopy, no fusionar los skbs."
    }
  ],
  "id": "CVE-2026-46323",
  "lastModified": "2026-08-24T13:18:59.297",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
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          "baseScore": 7.8,
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
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  "published": "2026-06-09T13:16:37.753",
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CVE-2026-46323 (GCVE-0-2026-46323)

Vulnerability from cvelistv5 – Published: 2026-06-09 12:11 – Updated: 2026-08-25 12:05

Title

net: gro: don't merge zcopy skbs

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-123 - Write-what-where Condition

Assigner

Linux mitre root

References

19 references

URL	Tags
https://git.kernel.org/stable/c/3c6cc9f2ca65b6dd6…
https://git.kernel.org/stable/c/1f9c828556416fbe3…
https://git.kernel.org/stable/c/479084ae0e1d9cb79…
https://git.kernel.org/stable/c/e334cbf3388fd9334…
https://git.kernel.org/stable/c/44bea2032af0425e4…
https://git.kernel.org/stable/c/4db79a322db8c97f7…
https://access.redhat.com/security/cve/CVE-2026-46323	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2479832	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:47727	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:44230	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:44231	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:44259	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:44262	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27731	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:44270	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27735	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:27708	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36018	vendor-advisoryx_refsource_REDHAT

Impacted products

18 products

Vendor	Product	Version
Linux	Linux	Affected: 753f1ca4e1e50248a1b760c9774d6d6b354562cc , < 3c6cc9f2ca65b6dd61b1af75452dc0e1cd0aad8d (git) Affected: 753f1ca4e1e50248a1b760c9774d6d6b354562cc , < 1f9c828556416fbe3f49386708ce999fc4d4da06 (git) Affected: 753f1ca4e1e50248a1b760c9774d6d6b354562cc , < 479084ae0e1d9cb7929cb4298d35623de189f80a (git) Affected: 753f1ca4e1e50248a1b760c9774d6d6b354562cc , < e334cbf3388fd9334503a778a82d9e9f14dd2f71 (git) Affected: 753f1ca4e1e50248a1b760c9774d6d6b354562cc , < 44bea2032af0425e4ce6d26a8af0ede79db49ec1 (git) Affected: 753f1ca4e1e50248a1b760c9774d6d6b354562cc , < 4db79a322db8c97f7b73b8a347395ef4d685eb40 (git)
Linux	Linux	Affected: 6.0 Unaffected: 0 , < 6.0 (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.142 , ≤ 6.6.* (semver) Unaffected: 6.12.92 , ≤ 6.12.* (semver) Unaffected: 6.18.34 , ≤ 6.18.* (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:6.12.0-211.38.1.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	Unaffected: 0:6.12.0-55.82.1.el10_0 , < * (rpm) cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:5.14.0-687.22.1.el9_8 , < * (rpm) cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions	Unaffected: 0:5.14.0-427.132.1.el9_4 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.4
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	Unaffected: 0:5.14.0-570.123.1.el9_6 , < * (rpm) cpe:/a:redhat:rhel_eus:9.6
Red Hat	Red Hat OpenShift Container Platform 4.17	Unaffected: 417.94.202607240132-0 , < * (rpm) cpe:/a:redhat:openshift:4.17::el9
Red Hat	Red Hat OpenShift Container Platform 4.18	Unaffected: 418.94.202607211754-0 , < * (rpm) cpe:/a:redhat:openshift:4.18::el9
Red Hat	Red Hat OpenShift Container Platform 4.19	Unaffected: 4.19.9.6.202607220857-0 , < * (rpm) cpe:/a:redhat:openshift:4.19::el9
Red Hat	Red Hat OpenShift Container Platform 4.20	Unaffected: 4.20.9.6.202607221038-0 , < * (rpm) cpe:/a:redhat:openshift:4.20::el9
Red Hat	Red Hat OpenShift Container Platform 4.21	Unaffected: 4.21.9.6.202607221317-0 , < * (rpm) cpe:/a:redhat:openshift:4.21::el9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux for NVIDIA 26	cpe:/a:redhat:enterprise_linux_nvidia:
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Show details on NVD website

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            "value": "RHSA-2026:44259: Red Hat OpenShift Container Platform 4.20"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:44262: Red Hat OpenShift Container Platform 4.21"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:27731: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0), Red Hat Enterprise Linux Real Time EUS (v. 10.0), Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:44270: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10), Red Hat Enterprise Linux Real Time (v. 10), Red Hat Enterprise Linux Real Time for NFV (v. 10)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:27735: Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux BaseOS E4S (v.9.4), Red Hat Enterprise Linux Real Time E4S (v.9.4), Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:27708: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6), Red Hat Enterprise Linux Real Time EUS (v.9.6), Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:36018: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9)"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-05-19T11:49:44.372Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-05-19T00:00:00.000Z",
            "value": "Made public."
          }
        ],
        "title": "kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs",
        "workarounds": [
          {
            "lang": "en",
            "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."
          }
        ],
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/gro.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3c6cc9f2ca65b6dd61b1af75452dc0e1cd0aad8d",
              "status": "affected",
              "version": "753f1ca4e1e50248a1b760c9774d6d6b354562cc",
              "versionType": "git"
            },
            {
              "lessThan": "1f9c828556416fbe3f49386708ce999fc4d4da06",
              "status": "affected",
              "version": "753f1ca4e1e50248a1b760c9774d6d6b354562cc",
              "versionType": "git"
            },
            {
              "lessThan": "479084ae0e1d9cb7929cb4298d35623de189f80a",
              "status": "affected",
              "version": "753f1ca4e1e50248a1b760c9774d6d6b354562cc",
              "versionType": "git"
            },
            {
              "lessThan": "e334cbf3388fd9334503a778a82d9e9f14dd2f71",
              "status": "affected",
              "version": "753f1ca4e1e50248a1b760c9774d6d6b354562cc",
              "versionType": "git"
            },
            {
              "lessThan": "44bea2032af0425e4ce6d26a8af0ede79db49ec1",
              "status": "affected",
              "version": "753f1ca4e1e50248a1b760c9774d6d6b354562cc",
              "versionType": "git"
            },
            {
              "lessThan": "4db79a322db8c97f7b73b8a347395ef4d685eb40",
              "status": "affected",
              "version": "753f1ca4e1e50248a1b760c9774d6d6b354562cc",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/gro.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.142",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.92",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.176",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.142",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.92",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.34",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: gro: don\u0027t merge zcopy skbs\n\nskb_gro_receive() can currently copy frags between the source and GRO\nskb, without checking the zerocopy status, and in particular the\nSKBFL_MANAGED_FRAG_REFS flag.\n\nWhen SKBFL_MANAGED_FRAG_REFS is set, the skb doesn\u0027t hold a reference\non the pages in shinfo-\u003efrags. Appending those frags to another skb\u0027s\nfrags without fixing up the page refcount can lead to UAF.\n\nWhen either the last skb in the GRO chain (the one we would append\nfrags to) or the source skb is zerocopy, don\u0027t merge the skbs."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Exploitation requires a local attacker to inject zerocopy/managed-frags skbs via io_uring SEND_ZC, TUN/TAP, or similar local APIs; ordinary remote wire packets processed by GRO do not carry SKBFL_MANAGED_FRAG_REFS, so a network-only attacker cannot reach the buggy merge path.\nAC:L - The attacker fully controls both sides of the GRO merge (seed and zerocopy TCP segments over a veth pair), timing (netem delay, RST race), and buffer setup; a public working LPE exploit exists, so success does not depend on conditions outside attacker control.\nPR:L - Triggering requires only a basic unprivileged local account with io_uring and user-namespace access (unshare -Urn), which is the default on many distributions; no init-namespace root or CAP_NET_ADMIN is needed.\nUI:N - No victim user action is required; the attacker drives the entire exploit autonomously through syscalls and local network namespace setup.\nS:U - Impact is standard host-kernel privilege escalation (root on the same kernel); it does not cross a distinct hypervisor/IOMMU security boundary such as VM-guest-to-host escape.\nC:H - The flaw is a use-after-free on page structures; the known exploit leverages the refcount underflow to obtain stale read access to freed physical pages and extract kernel PTE contents, enabling arbitrary memory disclosure primitives.\nI:H - UAF page refcount corruption enables crafting writable PTE entries against read-only page-cache pages; the public exploit demonstrates integrity compromise by rewriting /etc/passwd and obtaining root via su.\nA:H - Use-after-free of page structures can cause kernel oops/panic during skb teardown; even failed exploitation attempts can crash the system."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:31:18.394Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3c6cc9f2ca65b6dd61b1af75452dc0e1cd0aad8d"
        },
        {
          "url": "https://git.kernel.org/stable/c/1f9c828556416fbe3f49386708ce999fc4d4da06"
        },
        {
          "url": "https://git.kernel.org/stable/c/479084ae0e1d9cb7929cb4298d35623de189f80a"
        },
        {
          "url": "https://git.kernel.org/stable/c/e334cbf3388fd9334503a778a82d9e9f14dd2f71"
        },
        {
          "url": "https://git.kernel.org/stable/c/44bea2032af0425e4ce6d26a8af0ede79db49ec1"
        },
        {
          "url": "https://git.kernel.org/stable/c/4db79a322db8c97f7b73b8a347395ef4d685eb40"
        }
      ],
      "title": "net: gro: don\u0027t merge zcopy skbs",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46323",
    "datePublished": "2026-06-09T12:11:15.562Z",
    "dateReserved": "2026-05-13T15:03:33.112Z",
    "dateUpdated": "2026-08-25T12:05:36.169Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

FKIE_CVE-2026-46323

CVE-2026-46323 (GCVE-0-2026-46323)

Tags

Sightings

Nomenclature