جزئیات آسیبپذیری
CVE-2026-43038
Linux LinuxRed Hat Enterprise Linux 9Siemens 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
ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach()
CVSS 3.1
9.8بحرانی
شرح رسمی (انگلیسی)
In the Linux kernel, the following vulnerability has been resolved: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() Sashiko AI-review observed: In ip6_err_gen_icmpv6_unreach(), the skb is an outer IPv4 ICMP error packet where its cb contains an IPv4 inet_skb_parm. When skb is cloned into skb2 and passed to icmp6_send(), it uses IP6CB(skb2). IP6CB interprets the IPv4 inet_skb_parm as an inet6_skb_parm. The cipso offset in inet_skb_parm.opt directly overlaps with dsthao in inet6_skb_parm at offset 18. If an attacker sends a forged ICMPv4 error with a CIPSO IP option, dsthao would be a non-zero offset. Inside icmp6_send(), mip6_addr_swap() is called and uses ipv6_find_tlv(skb, opt->dsthao, IPV6_TLV_HAO). This would scan the inner, attacker-controlled IPv6 packet starting at that offset, potentially returning a fake TLV without checking if the remaining packet length can hold the full 18-byte struct ipv6_destopt_hao. Could mip6_addr_swap() then perform a 16-byte swap that extends past the end of the packet data into skb_shared_info? Should the cb array also be cleared in ip6_err_gen_icmpv6_unreach() and ip6ip6_err() to prevent this? This patch implements the first suggestion. I am not sure if ip6ip6_err() needs to be changed. A separate patch would be better anyway.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 9.8بحرانی | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 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 | 3.13 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca15a078bd907df5fc1c009477869c5cbde3b753 ≤ v < 0452b6526b2f54b2413b9cb4ff1ea2ac542c99c7 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca15a078bd907df5fc1c009477869c5cbde3b753 ≤ v < a4437faf135da293d16fcc4cc607316742bd0ebb | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca15a078bd907df5fc1c009477869c5cbde3b753 ≤ v < 3d5127d998de617b130aae96b138dba22ac6a8a7 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca15a078bd907df5fc1c009477869c5cbde3b753 ≤ v < e41953e7d118e2702bcb217879c173d9d1d3cd4e | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca15a078bd907df5fc1c009477869c5cbde3b753 ≤ v < a2edbb6393972a02114b6003953a5cef3104fada | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca15a078bd907df5fc1c009477869c5cbde3b753 ≤ v < 1ceeebd5bd6d855b17a5df625109bfe29129d7cf | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca15a078bd907df5fc1c009477869c5cbde3b753 ≤ v < 86ab3e55673a7a49a841838776f1ab18d23a67b5 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca15a078bd907df5fc1c009477869c5cbde3b753 ≤ v < c438ba010171b70bad22fc18b1d5bdc3627476e8 | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux 9 | همه | 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 | 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 | V3.1.5 ≤ 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 | 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 | V3.1.5 ≤ 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
۳۳- https://git.kernel.org/stable/c/c438ba010171b70bad22fc18b1d5bdc3627476e8
- https://git.kernel.org/stable/c/0452b6526b2f54b2413b9cb4ff1ea2ac542c99c7
- https://git.kernel.org/stable/c/a4437faf135da293d16fcc4cc607316742bd0ebb
- https://git.kernel.org/stable/c/3d5127d998de617b130aae96b138dba22ac6a8a7
- https://git.kernel.org/stable/c/e41953e7d118e2702bcb217879c173d9d1d3cd4e
- https://git.kernel.org/stable/c/a2edbb6393972a02114b6003953a5cef3104fada
- https://git.kernel.org/stable/c/1ceeebd5bd6d855b17a5df625109bfe29129d7cf
- https://git.kernel.org/stable/c/86ab3e55673a7a49a841838776f1ab18d23a67b5
- https://access.redhat.com/security/cve/CVE-2026-43038 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2464397 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43038.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:24343 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:30129 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:22940 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:23237 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:23224 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:30848 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:55618 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:25121 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:55762 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:26535 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:25533 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:22964 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:55761 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:55837 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:56224 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
- https://access.redhat.com/errata/RHSA-2026:25120 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:22900 vendor-advisoryx_refsource_REDHAT
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
هشدار CVEهای بعدی این محصولمحصول را دنبال کنید تا آسیبپذیریهای تازه را در تلگرام بگیرید.
اطلاعات
- تاریخ انتشار
- ۱۴۰۵/۰۲/۱۱
- آخرین بهروزرسانی
- ۱۴۰۵/۰۷/۲۷
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- Linux
پیشبینی بهرهبرداری (EPSS)
۰٫۲۵٪
احتمال بهرهبرداری در ۳۰ روز
۱۷٫۱٪
صدک (نسبت به همهی CVEها)
ارزیابی SSVC (CISA)
- قابل خودکارسازی
- بله
- وضعیت بهرهبرداری
- ندارد
- اثر فنی
- کامل
ضعفها (CWE)
- CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
- CWE-787Out-of-bounds Write