OESA-2026-4258

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-4258
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-4258.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-4258
Upstream
Published
2026-10-16T11:58:40Z
Modified
2026-10-16T12:15:05Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
sudo security update
Details

Sudo is a program designed to allow a sysadmin to give limited root privileges to users and log root activity. The basic philosophy is to give as few privileges as possible but still allow people to get their work done.

Security Fix(es):

A flaw was found in sudo. When sudoers rules use NOTBEFORE or NOTAFTER time-based access restrictions with timestamps that omit the trailing 'Z' timezone indicator, the time evaluation relies on the TZ environment variable inherited from the calling user. Because sudo is a setuid-root program, an unprivileged local user can set TZ to an extreme timezone offset to shift the authorization window by up to approximately 25 hours, causing expired rules to be treated as valid. This allows the user to execute commands outside the intended time window. Authentication is not bypassed; only the time-based authorization check is affected.(CVE-2026-96512)

Database specific 
{
    "severity":  "High"
}
References

Affected packages

openEuler:22.03-LTS-SP4 / sudo

Package

Name
sudo
Purl
pkg:rpm/openEuler/sudo&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.9.8p2-22.oe2203sp4

Ecosystem specific 

{
    "aarch64":  [
        "sudo-1.9.8p2-22.oe2203sp4.aarch64.rpm",
        "sudo-debuginfo-1.9.8p2-22.oe2203sp4.aarch64.rpm",
        "sudo-debugsource-1.9.8p2-22.oe2203sp4.aarch64.rpm",
        "sudo-devel-1.9.8p2-22.oe2203sp4.aarch64.rpm"
    ],
    "noarch":  [
        "sudo-help-1.9.8p2-22.oe2203sp4.noarch.rpm"
    ],
    "src":  [
        "sudo-1.9.8p2-22.oe2203sp4.src.rpm"
    ],
    "x86_64":  [
        "sudo-1.9.8p2-22.oe2203sp4.x86_64.rpm",
        "sudo-debuginfo-1.9.8p2-22.oe2203sp4.x86_64.rpm",
        "sudo-debugsource-1.9.8p2-22.oe2203sp4.x86_64.rpm",
        "sudo-devel-1.9.8p2-22.oe2203sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4258.json"