جزئیات آسیب‌پذیری
CVE-2026-46244
netfilter: nft_inner: Fix IPv6 inner_thoff desync
شرح رسمی (انگلیسی)
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_inner: Fix IPv6 inner_thoff desync In nft_inner_parse_l2l3(), when processing inner IPv6 packets, ipv6_find_hdr() correctly computes the transport header offset traversing all extension headers, but the result is immediately overwritten with nhoff + sizeof(_ip6h) (40 bytes), which only accounts for the IPv6 base header. This creates a desync between inner_thoff (wrong — points to extension header start) and l4proto (correct — e.g., IPPROTO_TCP), enabling transport header forgery and potential firewall bypass. This issue affects stable versions from Linux 6.2. For comparison, the normal (non-inner) IPv6 path correctly preserves ipv6_find_hdr()'s result. Removing the incorrect overwrite ensures that ipv6_find_hdr()'s calculated transport header offset is preserved, thereby fixing the desynchronization.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 9.1بحرانی | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| 7.3بالا | 3.1 | CVEProject cvelistV5 (CNA) (redhat-SADP) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H |
محصولات آسیب‌پذیر
| فروشنده | محصول | نسخه‌ها | منبع |
|---|---|---|---|
| Linux | Linux | 6.2 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3a07327d10a09379315c844c63f27941f5081e0a ≤ v < 870d59e2cf218e7418491e26bad768cb16654582 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3a07327d10a09379315c844c63f27941f5081e0a ≤ v < 689bbf48c1f45130086ae1c46ab83ea4c753c601 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3a07327d10a09379315c844c63f27941f5081e0a ≤ v < c161ad9157f5a0429b5ff94d9770faf3bf48d273 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3a07327d10a09379315c844c63f27941f5081e0a ≤ v < b6a91f68ebfed9c38e0e9150f58a9b85da07181c | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 3a07327d10a09379315c844c63f27941f5081e0a ≤ v < d0f98a3617f6ae5b1e95cde1e68e7ead4a1279ce | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux 9 | همه | CVEProject cvelistV5 (CNA) |
منابع و راهنماها
۱۶- https://git.kernel.org/stable/c/c161ad9157f5a0429b5ff94d9770faf3bf48d273
- https://git.kernel.org/stable/c/870d59e2cf218e7418491e26bad768cb16654582
- https://git.kernel.org/stable/c/689bbf48c1f45130086ae1c46ab83ea4c753c601
- https://git.kernel.org/stable/c/d0f98a3617f6ae5b1e95cde1e68e7ead4a1279ce
- https://git.kernel.org/stable/c/b6a91f68ebfed9c38e0e9150f58a9b85da07181c
- https://access.redhat.com/security/cve/CVE-2026-46244 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2484451 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46244.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:33215 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:34911 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:34443 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:34094 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:36018 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:55618 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:56225 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:55763 vendor-advisoryx_refsource_REDHAT
اطلاعات
- تاریخ انتشار
- ۱۴۰۵/۰۳/۱۳
- آخرین به‌روزرسانی
- ۱۴۰۵/۰۷/۲۷
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- Linux
پیش‌بینی بهره‌برداری (EPSS)
ارزیابی SSVC (CISA)
- قابل خودکارسازی
- بله
- وضعیت بهره‌برداری
- ندارد
- اثر فنی
- کامل
ضعف‌ها (CWE)
- CWE-823Use of Out-of-range Pointer Offset
- CWE-682Incorrect Calculation