CVE-2026-43503: net: skbuff: propagate shared-frag marker through frag-transfer helpers
In the Linux kernel, the following vulnerability has been resolved:
Other sources
net: skbuff: propagate shared-frag marker through frag-transfer helpers
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.141.1-1 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.262-1Fixed in 6.1.176-1Fixed in 6.1.180-1Fixed in 6.12.94-1Fixed in 6.12.101-1Fixed in 7.1.7-1Fixed in 7.1.8-1 - Upgrade
Upgrade
debian/linux-6.1to a version that resolves this vulnerability.Fixed in 6.1.180-1~deb11u1 - Upgrade
Upgrade
Linux kernelto a version that resolves this vulnerability.Patch CVE-2026-43503
Event History
Frequently Asked Questions
What is the severity of CVE-2026-43503?
CVE-2026-43503 has a risk rating of 58, indicating a moderate severity vulnerability.
How do I fix CVE-2026-43503?
To fix CVE-2026-43503, update your Linux kernel to the latest available version that addresses this vulnerability.
What is affected by CVE-2026-43503?
CVE-2026-43503 affects the Linux kernel's handling of socket buffer (skbuff) operations.
What is the impact of CVE-2026-43503?
The impact of CVE-2026-43503 is related to potential data integrity issues when transferring fragments in network packets.
When was CVE-2026-43503 published?
CVE-2026-43503 was published on May 23, 2026.