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CVE-2026-68477— ipvs: fix more places with wrong ipv6 transport offsets

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于IPVS中TCP应用代码在提供ipvsh参数后仍假设IPv4网络头，且ip_vs_out_icmp_v6()中ICMPV6头偏移不正确，可能导致IPv6应用出现问题及校验和检查错误。

CVSS 9.8 · Critical EPSS 0.70% · P51

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2a3b791e6e1169f374224d164738e9f7be703d77< 613ce63711b8d431bba90781f133c39a21684f87 affected
2a3b791e6e1169f374224d164738e9f7be703d77< 95d4511d81b2b37e5d2bdde5d912e48243eae517 affected
2a3b791e6e1169f374224d164738e9f7be703d77< 3a9dc9b55b53d94613a587604b77d3b20024090c affected
2a3b791e6e1169f374224d164738e9f7be703d77< a3f0d5b605cd5da5c95279969fb8cea4e55cee5b affected
2a3b791e6e1169f374224d164738e9f7be703d77< 7350eb7ead172ae8024897d4b0f2e15c5318279c affected
2a3b791e6e1169f374224d164738e9f7be703d77< d4ec18f48ce78a3bf7c999ac908691007375fe99 affected
2a3b791e6e1169f374224d164738e9f7be703d77< 905d7a363ade96a19f214815361e11981142c547 affected
2a3b791e6e1169f374224d164738e9f7be703d77< b3fe4cbd583895987935a9bdad01c8f9d3a02310 affected
… +10 more rows
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I. Basic Information for CVE-2026-68477

Vulnerability Information
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Vulnerability Title
ipvs: fix more places with wrong ipv6 transport offsets
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ipvs: fix more places with wrong ipv6 transport offsets Sashiko reports for more incorrect IPv6 transport offsets. The app code for TCP was assuming IPv4 network header even after the ipvsh argument was provided. This can cause problems with apps over IPv6. As for the only official app in the kernel tree (FTP) this problem is harmless because we use Netfilter to mangle the FTP ports and we do not adjust the TCP seq numbers. Also, provide correct offset of the ICMPV6 header in ip_vs_out_icmp_v6() for correct checksum checks when the IPv6 packet has extension headers.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于IPVS中TCP应用代码在提供ipvsh参数后仍假设IPv4网络头，且ip_vs_out_icmp_v6()中ICMPV6头偏移不正确，可能导致IPv6应用出现问题及校验和检查错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 2a3b791e6e1169f374224d164738e9f7be703d77 ~ 613ce63711b8d431bba90781f133c39a21684f87 -
Linux Linux 2.6.28 -

II. Public POCs for CVE-2026-68477

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III. Intelligence Information for CVE-2026-68477

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Patches & Fixes for CVE-2026-68477 (8)

Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total

CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-74376 9.8 CRITICAL md/raid10: reset read_slot when reusing r10bio for discard
CVE-2026-74433 9.8 CRITICAL rxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-74434 9.8 CRITICAL rxrpc: Don't move a peeked OOB message onto the pending queue
CVE-2026-72191 9.8 CRITICAL ntfs3: validate split-point offset in indx_insert_into_buffer
CVE-2026-72299 9.8 CRITICAL tipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-72398 9.8 CRITICAL sctp: add INIT verification after cookie unpacking
CVE-2026-74384 9.8 CRITICAL nvme-multipath: fix flex array size in struct nvme_ns_head
CVE-2026-72442 9.8 CRITICAL netfilter: flowtable: fix and simplify IP6IP6 tunnel handling
CVE-2026-74436 9.8 CRITICAL rxrpc: serialize kernel accept preallocation with socket teardown
CVE-2026-74545 9.8 CRITICAL rtase: fix double free of multi-frag skb on DMA map failure
CVE-2026-72046 9.8 CRITICAL gve: fix header buffer corruption with header-split and HW-GRO
CVE-2026-72473 9.8 CRITICAL xprtrdma: Decouple req recycling from RPC completion

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-68477

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