CVE-2026-90290: arm64: hibernate: Restore DAIF state on error

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-17 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: arm64: hibernate: Restore DAIF state on error Sashiko AI has reported that if swsusp_mte_save_tags() for some reason fails we return from swsusp_arch_suspend() with DAIF being masked - that is not what we'd expect. Restore the saved DAIF state before returning from the error path.

Affected products

Linux kernel: 5.10 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/2c941f383a53e188cd6fe3a129eb9b52b298e683
https://git.kernel.org/stable/c/519e7de2c4c7b92ef57d4404b7e564aa9be24143
https://git.kernel.org/stable/c/541549827889d0380fd73f8aacb5de6ef7a5a1ac
https://git.kernel.org/stable/c/77053624d03359a4e2ec47d7106639ec9a498c2b
https://git.kernel.org/stable/c/ad3839fe2114bb092846df79edd8d119e148b8c3
https://git.kernel.org/stable/c/c8c6835f62a7f9fc68865e85397d13a2dc9210fb
https://git.kernel.org/stable/c/cb51a05498e755d900900ff4b8503b4da4325996
https://git.kernel.org/stable/c/f5693dfaf28d66e7e880feafd1778d3715869efc

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