{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"24a0d548d3a765cd4558224e4f8e06e14cba26e3","status":"affected","version":"8605330aac5a5785630aec8f64378a54891937cc","versionType":"git"},{"lessThan":"71ff5cdd5da61d0438e902aa0fd68c28bc901abe","status":"affected","version":"8605330aac5a5785630aec8f64378a54891937cc","versionType":"git"},{"lessThan":"ad9a0374ee6d11048e1f74cd5180bad58b9848b4","status":"affected","version":"8605330aac5a5785630aec8f64378a54891937cc","versionType":"git"},{"lessThan":"b903e9b5629ec8dd6db92174070045bf81ad7060","status":"affected","version":"8605330aac5a5785630aec8f64378a54891937cc","versionType":"git"},{"lessThan":"e0665b2a8e90bb08bd205062c75662b502d31797","status":"affected","version":"8605330aac5a5785630aec8f64378a54891937cc","versionType":"git"},{"lessThan":"3dde4fb941fa5649ab809f6cd3e20e0c424a4e31","status":"affected","version":"8605330aac5a5785630aec8f64378a54891937cc","versionType":"git"},{"lessThan":"eb51a9ad3ceb01bc6c0fb608dbc856e03ee6f24a","status":"affected","version":"8605330aac5a5785630aec8f64378a54891937cc","versionType":"git"},{"lessThan":"1ee90b77b727df903033db873c75caac5c27ec98","status":"affected","version":"8605330aac5a5785630aec8f64378a54891937cc","versionType":"git"},{"status":"affected","version":"cdaf15b43bd31003220cb080bcbbd57787a2fca9","versionType":"git"},{"lessThan":"4.11","status":"affected","version":"4.10.14","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"4.11"},{"lessThan":"4.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.94","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.36","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.13","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)","source":"ADP: 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 (6ES7518-4FX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","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":"V3.1.6","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":"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-2026-53223","cwes":["CWE-125"],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: guard timestamp cmsgs to real error queue skbs\n\nskb_is_err_queue() treats PACKET_OUTGOING as the sole marker for an skb\nfrom sk_error_queue. That assumption is not true for AF_PACKET sockets:\noutgoing packet taps are also delivered to packet sockets with\nskb->pkt_type == PACKET_OUTGOING, but their skb->cb is owned by AF_PACKET\ninstead of struct sock_exterr_skb.\n\nIf such an skb is received with timestamping enabled, the generic\ntimestamp cmsg path can read AF_PACKET control-buffer state as\nsock_exterr_skb::opt_stats. With SO_RXQ_OVFL enabled, the packet drop\ncounter overlaps opt_stats. An odd drop count makes the path emit\nSCM_TIMESTAMPING_OPT_STATS with skb->len and skb->data. For non-linear\nskbs this copies past the linear head and can trigger hardened usercopy or\ndisclose adjacent heap contents.\n\nKeep skb_is_err_queue() local to net/socket.c, but make it verify that\nthe PACKET_OUTGOING marker is paired with the sock_rmem_free destructor\ninstalled by sock_queue_err_skb(). AF_PACKET receive skbs use normal\nreceive ownership and no longer pass as error-queue skbs, while legitimate\nsk_error_queue entries keep the PACKET_OUTGOING marker and sock_rmem_free\nownership.","epss":{"date":"2026-11-09","percentile":0.03082,"score":0.00136},"exploits":[],"kev":null,"metrics":[{"score":7.1,"severity":"high","source":"CNA: Linux","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}],"modifiedAt":1794314895614,"publishedAt":1782376764588,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/24a0d548d3a765cd4558224e4f8e06e14cba26e3"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/71ff5cdd5da61d0438e902aa0fd68c28bc901abe"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/ad9a0374ee6d11048e1f74cd5180bad58b9848b4"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/b903e9b5629ec8dd6db92174070045bf81ad7060"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/e0665b2a8e90bb08bd205062c75662b502d31797"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/3dde4fb941fa5649ab809f6cd3e20e0c424a4e31"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/eb51a9ad3ceb01bc6c0fb608dbc856e03ee6f24a"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/1ee90b77b727df903033db873c75caac5c27ec98"},{"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"}],"remediation":[],"revision":"04a0f35519db656abd12fd014686eb3d8cfc4626addda605a1467282f2928de0","sources":[{"modifiedAt":1794314895614,"name":"CNA: Linux","retrievedAt":1794316687993,"url":"https://www.cve.org/CVERecord?id=CVE-2026-53223"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794316713373,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-53223"}],"ssvc":{"assessedAt":1792164428585,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"net: guard timestamp cmsgs to real error queue skbs","updatedAt":1794316713373}