{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"d0c5aa8dd38887714f1aad04236a3620b56a5e4e","status":"affected","version":"08de61beab8a21c8e0b3906a97defda5f1f66ece","versionType":"git"},{"lessThan":"e06b596fc4eb01936a2e5dccad17c946d660bab8","status":"affected","version":"08de61beab8a21c8e0b3906a97defda5f1f66ece","versionType":"git"},{"lessThan":"8ddf8de7e758f6888988467af9ffc8adf589fb16","status":"affected","version":"08de61beab8a21c8e0b3906a97defda5f1f66ece","versionType":"git"},{"lessThan":"d3225e6b9bd51ec177970a628fe4b11237ce87d5","status":"affected","version":"08de61beab8a21c8e0b3906a97defda5f1f66ece","versionType":"git"},{"lessThan":"7b18692c59afb8e5c364c8e3ac01e51dd6b52028","status":"affected","version":"08de61beab8a21c8e0b3906a97defda5f1f66ece","versionType":"git"},{"lessThan":"83f644ea92987c100b82d8481ae2230faeed3d34","status":"affected","version":"08de61beab8a21c8e0b3906a97defda5f1f66ece","versionType":"git"},{"lessThan":"ee836e820a40e2ca4da8af7310bff92d586772d4","status":"affected","version":"08de61beab8a21c8e0b3906a97defda5f1f66ece","versionType":"git"},{"lessThan":"eb2d16a7d599dc9d4df391b5e660df9949963786","status":"affected","version":"08de61beab8a21c8e0b3906a97defda5f1f66ece","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"2.6.21"},{"lessThan":"2.6.21","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.168","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.131","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.80","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","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","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","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","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","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","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","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","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]}],"cveId":"CVE-2026-31515","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\naf_key: validate families in pfkey_send_migrate()\n\nsyzbot was able to trigger a crash in skb_put() [1]\n\nIssue is that pfkey_send_migrate() does not check old/new families,\nand that set_ipsecrequest() @family argument was truncated,\nthus possibly overfilling the skb.\n\nValidate families early, do not wait set_ipsecrequest().\n\n[1]\n\nskbuff: skb_over_panic: text:ffffffff8a752120 len:392 put:16 head:ffff88802a4ad040 data:ffff88802a4ad040 tail:0x188 end:0x180 dev:<NULL>\n kernel BUG at net/core/skbuff.c:214 !\nCall Trace:\n <TASK>\n  skb_over_panic net/core/skbuff.c:219 [inline]\n  skb_put+0x159/0x210 net/core/skbuff.c:2655\n  skb_put_zero include/linux/skbuff.h:2788 [inline]\n  set_ipsecrequest net/key/af_key.c:3532 [inline]\n  pfkey_send_migrate+0x1270/0x2e50 net/key/af_key.c:3636\n  km_migrate+0x155/0x260 net/xfrm/xfrm_state.c:2848\n  xfrm_migrate+0x2140/0x2450 net/xfrm/xfrm_policy.c:4705\n  xfrm_do_migrate+0x8ff/0xaa0 net/xfrm/xfrm_user.c:3150","epss":{"date":"2026-11-05","percentile":0.02539,"score":0.00129},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793915104600,"publishedAt":1776866072194,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/d0c5aa8dd38887714f1aad04236a3620b56a5e4e"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/e06b596fc4eb01936a2e5dccad17c946d660bab8"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/8ddf8de7e758f6888988467af9ffc8adf589fb16"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/d3225e6b9bd51ec177970a628fe4b11237ce87d5"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/7b18692c59afb8e5c364c8e3ac01e51dd6b52028"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/83f644ea92987c100b82d8481ae2230faeed3d34"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/ee836e820a40e2ca4da8af7310bff92d586772d4"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/eb2d16a7d599dc9d4df391b5e660df9949963786"},{"source":"ADP: siemens-SADP","tags":[],"url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html"},{"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":"bc6d5659e9361ef5bdf53373667dea470767e26abdc36ca2656c854dd5833e70","sources":[{"modifiedAt":1793915104600,"name":"CNA: Linux","retrievedAt":1793917075982,"url":"https://www.cve.org/CVERecord?id=CVE-2026-31515"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793917103687,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-31515"}],"ssvc":{"assessedAt":1793914589210,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"af_key: validate families in pfkey_send_migrate()","updatedAt":1793917103687}