CVE-2026-68480

In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Make Safe-RET robust against interrupt injection An attacker injecting interrupts while the Safe-RET mitigation executes on machines affected by SRSO can neutralize the safe return sequence, potentially leading to data leakage through speculative execution. Fixup register state as if the Safe-RET sequence executed successfully by "emulating" it, in a manner of speaking, and avoid executing a RET instruction after returning from the interrupt.

Status

Received - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-08-06

Last modified

2026-08-18

Affected products

• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/52db77a13be224e09eb4ba6b4252ae8ab9085c2c
• https://git.kernel.org/stable/c/61649a2d61cb0dbc673f0f232f0f0c298bf50442
• https://git.kernel.org/stable/c/6703dba1d14cbd6647cd1ccfa3a3fa94b64dd096
• https://git.kernel.org/stable/c/7e7f81cf6f5ca3311e526308f55d7c54d3ba71f9
• https://git.kernel.org/stable/c/bfe7f9993467ba431b2731437949ac1e2634e771
• https://git.kernel.org/stable/c/d0208e08d64d99383e09852a76cc3038c5a4c3ab
• https://git.kernel.org/stable/c/dfefa3c51370f84acb643cddf98bb42c885d0483
• https://git.kernel.org/stable/c/e262f28a69ae9e0791248f93b0173c1d1f3e1d5d
• https://people.csail.mit.edu/mengjia/data/2026.USENIX.TONTOU.pdf