CVE-2026-23156 (GCVE-0-2026-23156)
Vulnerability from cvelistv5 – Published: 2026-02-14 16:01 – Updated: 2026-05-11 22:01
VLAI
EPSS
VEX
Title
efivarfs: fix error propagation in efivar_entry_get()
Summary
In the Linux kernel, the following vulnerability has been resolved:
efivarfs: fix error propagation in efivar_entry_get()
efivar_entry_get() always returns success even if the underlying
__efivar_entry_get() fails, masking errors.
This may result in uninitialized heap memory being copied to userspace
in the efivarfs_file_read() path.
Fix it by returning the error from __efivar_entry_get().
Severity
7.8 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
2d82e6227ea189c0589e7383a36616ac2a2d248c , < 3960f1754664661a970dc9ebbab44ff93a0b4c42
(git)
Affected: 2d82e6227ea189c0589e7383a36616ac2a2d248c , < 510a16f1c5c1690b33504052bc13fbc2772c23f8 (git) Affected: 2d82e6227ea189c0589e7383a36616ac2a2d248c , < 89b8ca709eeeabcc11ebba64806677873a2787a8 (git) Affected: 2d82e6227ea189c0589e7383a36616ac2a2d248c , < e4e15a0a4403c96d9898d8398f0640421df9cb16 (git) Affected: 2d82e6227ea189c0589e7383a36616ac2a2d248c , < 4b22ec1685ce1fc0d862dcda3225d852fb107995 (git) |
guessed | |
| Linux | Linux |
Affected:
6.0
Unaffected: 0 , < 6.0 (semver) Unaffected: 6.1.162 , ≤ 6.1.* (semver) Unaffected: 6.6.123 , ≤ 6.6.* (semver) Unaffected: 6.12.69 , ≤ 6.12.* (semver) Unaffected: 6.18.9 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
guessed |
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T07:19:12+00:00",
"cve": "CVE-2026-23156",
"id": "CVE-2026-23156",
"initial_release_date": "2026-02-14T00:00:00+00:00",
"product_status:fixed": "616",
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"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Linux kernel: Information disclosure in efivarfs via incorrect error propagation",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23156.json",
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}
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