CVE-2026-68480

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux3f9b7101bea1dcb63410c016ceb266f6e9f733c9 < dfefa3c51370f84acb643cddf98bb42c885d0483affected
LinuxLinuxb35087763a44d1eb45857f799579a351332be505 < 52db77a13be224e09eb4ba6b4252ae8ab9085c2caffected
LinuxLinuxac41e90d8daa8815d8bee774a1975435fbfe1ae7 < d0208e08d64d99383e09852a76cc3038c5a4c3abaffected
LinuxLinuxfb3bd914b3ec28f5fb697ac55c4846ac2d542855 < 6703dba1d14cbd6647cd1ccfa3a3fa94b64dd096affected
LinuxLinuxfb3bd914b3ec28f5fb697ac55c4846ac2d542855 < e262f28a69ae9e0791248f93b0173c1d1f3e1d5daffected
LinuxLinuxfb3bd914b3ec28f5fb697ac55c4846ac2d542855 < bfe7f9993467ba431b2731437949ac1e2634e771affected
LinuxLinuxfb3bd914b3ec28f5fb697ac55c4846ac2d542855 < 61649a2d61cb0dbc673f0f232f0f0c298bf50442affected
LinuxLinuxfb3bd914b3ec28f5fb697ac55c4846ac2d542855 < 7e7f81cf6f5ca3311e526308f55d7c54d3ba71f9affected
LinuxLinuxacdc883eb61efbe01b954e782e1124790bd391a8affected
LinuxLinux5.10.189 < 5.10.264affected
LinuxLinux5.15.125 < 5.15.215affected
LinuxLinux6.1.44 < 6.1.182affected
LinuxLinux6.4.9 < 6.5affected
LinuxLinux6.5affected
LinuxLinux0 < 6.5unaffected
LinuxLinux5.10.264 <= 5.10.*unaffected
LinuxLinux5.15.215 <= 5.15.*unaffected
LinuxLinux6.1.182 <= 6.1.*unaffected
LinuxLinux6.6.150 <= 6.6.*unaffected
LinuxLinux6.12.102 <= 6.12.*unaffected
LinuxLinux6.18.43 <= 6.18.*unaffected
LinuxLinux7.1.7 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References