ipvs: fix more places with wrong ipv6 transport offsets
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 5 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 2.6.28 and later | 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.28 and later Fixed in 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-68477
- 2026-10-03 Alias added: GHSA-g55r-28w7-4fjw
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-20 Weakness changed · CISA ADP
- 2026-11-03 CVSS score changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/613ce63711b8d431bba90781f133c39a21684f87
- https://git.kernel.org/stable/c/95d4511d81b2b37e5d2bdde5d912e48243eae517
- https://git.kernel.org/stable/c/3a9dc9b55b53d94613a587604b77d3b20024090c
- https://git.kernel.org/stable/c/a3f0d5b605cd5da5c95279969fb8cea4e55cee5b
- https://git.kernel.org/stable/c/7350eb7ead172ae8024897d4b0f2e15c5318279c
- https://git.kernel.org/stable/c/d4ec18f48ce78a3bf7c999ac908691007375fe99
- https://git.kernel.org/stable/c/905d7a363ade96a19f214815361e11981142c547
- https://git.kernel.org/stable/c/b3fe4cbd583895987935a9bdad01c8f9d3a02310
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Sources
- CVE-2026-68477 · CVE Program
- CVE-2026-68477 · NVD
- FIRST EPSS
- GHSA-g55r-28w7-4fjw · GitHub Advisory Database · CC BY 4.0
- CVE-2026-68477 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences