Security: Linux Kernel: KTLS + sockmap
Posted: Thu May 07, 2026 6:28 am
Linux Kernel: KTLS + sockmap “Reverse Order” Use-After-Free / Data Corruption Issue Discussed Publicly
A new Linux kernel security issue related to KTLS and sockmap handling has recently been publicly discussed on the oss-security mailing list.
The issue is described as a possible:
The discussion started after security researcher V3rdant reported the issue to linux-distros and the Linux kernel security team earlier in March 2026.
A proposed fix was later discussed on the Linux netdev mailing list but was reportedly rejected, and afterwards the issue appears to have received little follow-up until it was publicly disclosed by Solar Designer on oss-security.
One important point raised in the discus…login to view the rest of this post
A new Linux kernel security issue related to KTLS and sockmap handling has recently been publicly discussed on the oss-security mailing list.
The issue is described as a possible:
- Use-After-Free condition
- Kernel memory corruption
- Potential privilege escalation vector
- Possible kernel crash or denial-of-service issue
Code: Select all
KTLS (Kernel TLS)
sockmap / eBPF networking features
A proposed fix was later discussed on the Linux netdev mailing list but was reportedly rejected, and afterwards the issue appears to have received little follow-up until it was publicly disclosed by Solar Designer on oss-security.
One important point raised in the discus…login to view the rest of this post