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siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"0","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]}],"cveId":"CVE-2026-46323","cwes":["CWE-123","CWE-416"],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: gro: don't 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't hold a reference\non the pages in shinfo->frags. Appending those frags to another skb's\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't merge the skbs.","epss":{"date":"2026-11-09","percentile":0.03165,"score":0.00137},"exploits":[],"kev":null,"metrics":[{"score":7.8,"severity":"high","source":"CNA: Linux","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},{"score":7.8,"severity":"high","source":"ADP: redhat-SADP","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794314850919,"publishedAt":1781007075562,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/3c6cc9f2ca65b6dd61b1af75452dc0e1cd0aad8d"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/1f9c828556416fbe3f49386708ce999fc4d4da06"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/479084ae0e1d9cb7929cb4298d35623de189f80a"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/e334cbf3388fd9334503a778a82d9e9f14dd2f71"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/44bea2032af0425e4ce6d26a8af0ede79db49ec1"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/4db79a322db8c97f7b73b8a347395ef4d685eb40"},{"source":"ADP: redhat-SADP","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-46323"},{"source":"ADP: redhat-SADP","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479832"},{"source":"ADP: redhat-SADP","tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46323.json"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:47727"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:44230"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:44231"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:44259"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:44262"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:27731"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:44270"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:27735"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:27708"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:36018"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:62642"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:62639"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:62641"},{"source":"ADP: redhat-SADP","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:62640"},{"source":"ADP: siemens-SADP","tags":[],"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"},{"source":"ADP: siemens-SADP","tags":[],"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html"},{"source":"ADP: siemens-SADP","tags":[],"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}],"remediation":[{"kind":"fix","source":"ADP: redhat-SADP","text":"RHSA-2026:47727: Red Hat OpenShift Container Platform 4.17\n\nRHSA-2026:44230: Red Hat OpenShift Container Platform 4.18\n\nRHSA-2026:44231: Red Hat OpenShift Container Platform 4.19\n\nRHSA-2026:44259: Red Hat OpenShift Container Platform 4.20\n\nRHSA-2026:44262: Red Hat OpenShift Container Platform 4.21\n\nRHSA-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)\n\nRHSA-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)\n\nRHSA-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)\n\nRHSA-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)\n\nRHSA-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)\n\nRHSA-2026:62642: Red Hat Enterprise Linux BaseOS (v. 10)\n\nRHSA-2026:62639: Red Hat Enterprise Linux BaseOS E4S (v.9.4)\n\nRHSA-2026:62641: Red Hat Enterprise Linux BaseOS EUS (v.9.6)\n\nRHSA-2026:62640: Red Hat Enterprise Linux BaseOS (v. 9)"},{"kind":"workaround","source":"ADP: redhat-SADP","text":"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."}],"revision":"27ea0ddfb5daf45d147eb6ef98e1bed4fe253f91a171c63aae2da4fbade9f81c","sources":[{"modifiedAt":1794314850919,"name":"CNA: Linux","retrievedAt":1794316660166,"url":"https://www.cve.org/CVERecord?id=CVE-2026-46323"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794316685032,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-46323"}],"ssvc":{"assessedAt":1792164127402,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"net: gro: don't merge zcopy skbs","updatedAt":1794316685032}