جزئیات آسیبپذیری
CVE-2025-21926
net: gso: fix ownership in __udp_gso_segment
شرح رسمی (انگلیسی)
In the Linux kernel, the following vulnerability has been resolved: net: gso: fix ownership in __udp_gso_segment In __udp_gso_segment the skb destructor is removed before segmenting the skb but the socket reference is kept as-is. This is an issue if the original skb is later orphaned as we can hit the following bug: kernel BUG at ./include/linux/skbuff.h:3312! (skb_orphan) RIP: 0010:ip_rcv_core+0x8b2/0xca0 Call Trace: ip_rcv+0xab/0x6e0 __netif_receive_skb_one_core+0x168/0x1b0 process_backlog+0x384/0x1100 __napi_poll.constprop.0+0xa1/0x370 net_rx_action+0x925/0xe50 The above can happen following a sequence of events when using OpenVSwitch, when an OVS_ACTION_ATTR_USERSPACE action precedes an OVS_ACTION_ATTR_OUTPUT action: 1. OVS_ACTION_ATTR_USERSPACE is handled (in do_execute_actions): the skb goes through queue_gso_packets and then __udp_gso_segment, where its destructor is removed. 2. The segments' data are copied and sent to userspace. 3. OVS_ACTION_ATTR_OUTPUT is handled (in do_execute_actions) and the same original skb is sent to its path. 4. If it later hits skb_orphan, we hit the bug. Fix this by also removing the reference to the socket in __udp_gso_segment.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 7.8بالا | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
محصولات آسیبپذیر
| فروشنده | محصول | نسخهها | منبع |
|---|---|---|---|
| Linux | Linux | 4.18 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ad405857b174ed31a97982bb129c320d03321cf5 ≤ v < a2d1cca955ed34873e524cc2e6e885450d262f05 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ad405857b174ed31a97982bb129c320d03321cf5 ≤ v < 455217ac9db0cf9349b3933664355e907bb1a569 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ad405857b174ed31a97982bb129c320d03321cf5 ≤ v < e8db70537878e1bb3fd83e5abcc6feefc0587828 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ad405857b174ed31a97982bb129c320d03321cf5 ≤ v < 9f28205ddb76e86cac418332e952241d85fed0dc | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ad405857b174ed31a97982bb129c320d03321cf5 ≤ v < 084819b0d8b1bd433b90142371eb9450d657f8ca | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ad405857b174ed31a97982bb129c320d03321cf5 ≤ v < c32da44cc9298eaa6109e3fc2c2b4e07cc4bf11b | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ad405857b174ed31a97982bb129c320d03321cf5 ≤ v < ee01b2f2d7d0010787c2343463965bbc283a497f | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ad405857b174ed31a97982bb129c320d03321cf5 ≤ v < 01a83237644d6822bc7df2c5564fc81b0df84358 | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
منابع و راهنماها
۱۲- https://git.kernel.org/stable/c/9f28205ddb76e86cac418332e952241d85fed0dc
- https://git.kernel.org/stable/c/a2d1cca955ed34873e524cc2e6e885450d262f05
- https://git.kernel.org/stable/c/455217ac9db0cf9349b3933664355e907bb1a569
- https://git.kernel.org/stable/c/e8db70537878e1bb3fd83e5abcc6feefc0587828
- https://git.kernel.org/stable/c/01a83237644d6822bc7df2c5564fc81b0df84358
- https://git.kernel.org/stable/c/084819b0d8b1bd433b90142371eb9450d657f8ca
- https://git.kernel.org/stable/c/c32da44cc9298eaa6109e3fc2c2b4e07cc4bf11b
- https://git.kernel.org/stable/c/ee01b2f2d7d0010787c2343463965bbc283a497f
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
اطلاعات
- تاریخ انتشار
- ۱۴۰۴/۰۱/۱۲
- آخرین بهروزرسانی
- ۱۴۰۵/۰۷/۲۳
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- Linux
پیشبینی بهرهبرداری (EPSS)
ضعفها (CWE)
- —