OESA-2026-2840

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-2840
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-2840.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-2840
Upstream
Published
2026-07-06T06:27:45Z
Modified
2026-07-06T06:45:13.844714265Z
Summary
nilfs-utils security update
Details

Userspace utilities for creating and mounting NILFS v2 filesystems.

Security Fix(es):

NILFS utilities through 2.3.0, fixed in commit 26efb5d, nilfssbisvalid() function fails to validate slogblocksize field in NILFS2 superblock before bit-shift operations. Attackers supplying crafted NILFS2 images trigger undefined behavior through oversized shifts or out-of-memory conditions, crashing tools like nilfs-tune and dumpseg.(CVE-2026-55392)

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

Affected packages

openEuler:20.03-LTS-SP4 / nilfs-utils

Package

Name
nilfs-utils
Purl
pkg:rpm/openEuler/nilfs-utils&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.2.7-7.oe2003sp4

Ecosystem specific 

{
    "aarch64": [
        "nilfs-utils-2.2.7-7.oe2003sp4.aarch64.rpm",
        "nilfs-utils-debuginfo-2.2.7-7.oe2003sp4.aarch64.rpm",
        "nilfs-utils-debugsource-2.2.7-7.oe2003sp4.aarch64.rpm",
        "nilfs-utils-devel-2.2.7-7.oe2003sp4.aarch64.rpm"
    ],
    "noarch": [
        "nilfs-utils-help-2.2.7-7.oe2003sp4.noarch.rpm"
    ],
    "x86_64": [
        "nilfs-utils-2.2.7-7.oe2003sp4.x86_64.rpm",
        "nilfs-utils-debuginfo-2.2.7-7.oe2003sp4.x86_64.rpm",
        "nilfs-utils-debugsource-2.2.7-7.oe2003sp4.x86_64.rpm",
        "nilfs-utils-devel-2.2.7-7.oe2003sp4.x86_64.rpm"
    ],
    "src": [
        "nilfs-utils-2.2.7-7.oe2003sp4.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-2840.json"