Linux Kernel up to 7.3-rc3 arm64 swsusp_arch_suspend_exit x0/x1 input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.25

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 7.3-rc3. Affected by this vulnerability is the function swsusp_arch_suspend_exit of the component arm64. The manipulation of the argument x0/x1 results in input validation. This vulnerability is identified as CVE-2026-98249. The attack is only possible with local access. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 7.3-rc3. Affected is the function swsusp_arch_suspend_exit of the component arm64. The manipulation of the argument x0/x1 with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2026-98249 since 09/25/2026. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation needs additional levels of successful authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8 or 7.3-rc4 eliminates this vulnerability. Applying the patch 6646418d1032cac25110526161f60d255ed08397/909e92423db7299e0206232051aa21fe129f65d0/60a3c319f1127c4d247d4ed235c5d65376d5e745/e80ea8118a073a30ebe7a31bd78938c2b1751acc/d3f8f773312af69eaf4dda106d76d6d42e4362e5/955d86e5f3b95b731991fdb84966c50b16314629 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.189/6.6.158/6.12.112/6.18.54/7.2.8/7.3-rc4
Patch: 6646418d1032cac25110526161f60d255ed08397/909e92423db7299e0206232051aa21fe129f65d0/60a3c319f1127c4d247d4ed235c5d65376d5e745/e80ea8118a073a30ebe7a31bd78938c2b1751acc/d3f8f773312af69eaf4dda106d76d6d42e4362e5/955d86e5f3b95b731991fdb84966c50b16314629

Timelineinfo

09/25/2026 CVE reserved
10/06/2026 +11 days Advisory disclosed
10/06/2026 +0 days VulDB entry created
10/06/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-98249 (🔒)
GCVE (CVE): GCVE-0-2026-98249
GCVE (VulDB): GCVE-100-414216

Entryinfo

Created: 10/06/2026 13:45
Changes: 10/06/2026 13:45 (60)
Complete: 🔍
Cache ID: 216::103

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