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جزئیات آسیب‌پذیری

CVE-2026-43284

Linux LinuxSiemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFPSiemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPSiemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

xfrm: esp: avoid in-place decrypt on shared skb frags

CVSS 3.1
8.8بالا

شرح رسمی (انگلیسی)

In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: avoid in-place decrypt on shared skb frags MSG_SPLICE_PAGES can attach pages from a pipe directly to an skb. TCP marks such skbs with SKBFL_SHARED_FRAG after skb_splice_from_iter(), so later paths that may modify packet data can first make a private copy. The IPv4/IPv6 datagram append paths did not set this flag when splicing pages into UDP skbs. That leaves an ESP-in-UDP packet made from shared pipe pages looking like an ordinary uncloned nonlinear skb. ESP input then takes the no-COW fast path for uncloned skbs without a frag_list and decrypts in place over data that is not owned privately by the skb. Mark IPv4/IPv6 datagram splice frags with SKBFL_SHARED_FRAG, matching TCP. Also make ESP input fall back to skb_cow_data() when the flag is present, so ESP does not decrypt externally backed frags in place. Private nonlinear skb frags still use the existing fast path. This intentionally does not change ESP output. In esp_output_head(), the path that appends the ESP trailer to existing skb tailroom without calling skb_cow_data() is not reachable for nonlinear skbs: skb_tailroom() returns zero when skb->data_len is nonzero, while ESP tailen is positive. Thus ESP output will either use the separate destination-frag path or fall back to skb_cow_data().

امتیازهای CVSS

امتیازنسخهمنبعبردار
7.8بالا 3.1 CISA ADP / Vulnrichment (CISA-ADP) CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
8.8بالا 3.1 CVEProject cvelistV5 (CNA) (Linux) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
7.8بالا 3.1 CVEProject cvelistV5 (CNA) (redhat-SADP) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

محصولات آسیب‌پذیر

فروشندهمحصولنسخه‌هامنبع
Linux Linux 4.11 CVEProject cvelistV5 (CNA)
Linux Linux cac2661c53f35cbe651bef9b07026a5a05ab8ce0 ≤ v < ab8b995323e5237041472d07e5055f5f7dcdf15b CVEProject cvelistV5 (CNA)
Linux Linux cac2661c53f35cbe651bef9b07026a5a05ab8ce0 ≤ v < fe785bb3a8096dffcc4048a85cd0c83337eeecad CVEProject cvelistV5 (CNA)
Linux Linux cac2661c53f35cbe651bef9b07026a5a05ab8ce0 ≤ v < 5d55c7336f8032d434adcc5fab987ccc93a44aec CVEProject cvelistV5 (CNA)
Linux Linux cac2661c53f35cbe651bef9b07026a5a05ab8ce0 ≤ v < 8253aab4659ca16116b522203c2a6b18dccacea7 CVEProject cvelistV5 (CNA)
Linux Linux cac2661c53f35cbe651bef9b07026a5a05ab8ce0 ≤ v < 50ed1e7873100f77abad20fd31c51029bc49cd03 CVEProject cvelistV5 (CNA)
Linux Linux cac2661c53f35cbe651bef9b07026a5a05ab8ce0 ≤ v < b54edf1e9a3fd3491bdcb82a21f8d21315271e0d CVEProject cvelistV5 (CNA)
Linux Linux cac2661c53f35cbe651bef9b07026a5a05ab8ce0 ≤ v < 71a1d9d985d26716f74d21f18ee8cac821b06e97 CVEProject cvelistV5 (CNA)
Linux Linux cac2661c53f35cbe651bef9b07026a5a05ab8ce0 ≤ v < 52646cbd00e765a6db9c3afe9535f26218276034 CVEProject cvelistV5 (CNA)
Linux Linux cac2661c53f35cbe651bef9b07026a5a05ab8ce0 ≤ v < f4c50a4034e62ab75f1d5cdd191dd5f9c77fdff4 CVEProject cvelistV5 (CNA)
Linux Linux cac2661c53f35cbe651bef9b07026a5a05ab8ce0 ≤ v < a6cb440f274a22456ef3e86b457344f1678f38f9 CVEProject cvelistV5 (CNA)
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5 ≤ v CVEProject cvelistV5 (CNA)
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5 ≤ v CVEProject cvelistV5 (CNA)
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.6 ≤ v < V3.1.7 CVEProject cvelistV5 (CNA)
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.6 ≤ v < V3.1.7 CVEProject cvelistV5 (CNA)
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5 ≤ v CVEProject cvelistV5 (CNA)
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5 ≤ v CVEProject cvelistV5 (CNA)
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.6 ≤ v < V3.1.7 CVEProject cvelistV5 (CNA)
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.6 ≤ v < V3.1.7 CVEProject cvelistV5 (CNA)
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5 ≤ v CVEProject cvelistV5 (CNA)
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.6 ≤ v < V3.1.7 CVEProject cvelistV5 (CNA)

منابع و راهنماها

۶۰
هشدار CVEهای بعدی این محصولمحصول را دنبال کنید تا آسیب‌پذیری‌های تازه را در تلگرام بگیرید.

اطلاعات

تاریخ انتشار
۱۴۰۵/۰۲/۱۸
آخرین به‌روزرسانی
۱۴۰۵/۰۷/۲۳
وضعیت
منتشرشده
صادرکننده (CNA)
Linux

پیش‌بینی بهره‌برداری (EPSS)

۹۴٫۱۹٪
احتمال بهره‌برداری در ۳۰ روز
۹۹٫۸٪
صدک (نسبت به همه‌ی CVEها)

ارزیابی SSVC (CISA)

قابل خودکارسازی
خیر
وضعیت بهره‌برداری
اثبات مفهوم
اثر فنی
کامل

ضعف‌ها (CWE)

  • CWE-123
    Write-what-where Condition