CVE-2026-98249

arm64: hibernate: pass HVC_SET_VECTORS args to the resume hvc

State: Published
Severity: Not scored
Published: Oct 6, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

arm64: hibernate: pass HVC_SET_VECTORS args to the resume hvc

swsusp_arch_suspend_exit() reinstalls the restored kernel's hyp stub vectors with an hvc, but never passes the arguments. x0 is not set to HVC_SET_VECTORS and x1 is not set to the vector address, so the stub dispatch falls through and returns without writing vbar_el2. EL2 is left pointing at the trans_pgd copy of the vectors, a page that swsusp_free() releases right after resume.

Set the arguments up the same way __hyp_set_vectors() does.

Without this fix, Vladimir was able to trigger a hang when resuming from hibernation with CONFIG_PAGE_POISONING=y and page_poison=on.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	788bfdd97434982b6d575062581e8e72eea755af to before 6646418d1032cac25110526161f60d255ed08397Affected 788bfdd97434982b6d575062581e8e72eea755af to before 909e92423db7299e0206232051aa21fe129f65d0Affected 788bfdd97434982b6d575062581e8e72eea755af to before 60a3c319f1127c4d247d4ed235c5d65376d5e745Affected 788bfdd97434982b6d575062581e8e72eea755af to before e80ea8118a073a30ebe7a31bd78938c2b1751accAffected 788bfdd97434982b6d575062581e8e72eea755af to before d3f8f773312af69eaf4dda106d76d6d42e4362e5Affected 788bfdd97434982b6d575062581e8e72eea755af to before 955d86e5f3b95b731991fdb84966c50b16314629Affected
LinuxLinux	5.16Affected before 5.16Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.112 through 6.12.Not affected 6.18.54 through 6.18.Not affected 7.2.8 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

788bfdd97434982b6d575062581e8e72eea755af to before 6646418d1032cac25110526161f60d255ed08397Affected
788bfdd97434982b6d575062581e8e72eea755af to before 909e92423db7299e0206232051aa21fe129f65d0Affected
788bfdd97434982b6d575062581e8e72eea755af to before 60a3c319f1127c4d247d4ed235c5d65376d5e745Affected
788bfdd97434982b6d575062581e8e72eea755af to before e80ea8118a073a30ebe7a31bd78938c2b1751accAffected
788bfdd97434982b6d575062581e8e72eea755af to before d3f8f773312af69eaf4dda106d76d6d42e4362e5Affected
788bfdd97434982b6d575062581e8e72eea755af to before 955d86e5f3b95b731991fdb84966c50b16314629Affected

LinuxLinux

5.16Affected
before 5.16Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.112 through 6.12.*Not affected
6.18.54 through 6.18.*Not affected
7.2.8 through 7.2.*Not affected
7.3 and laterNot affected

References

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