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CVE-2025-14104— Util-linux: util-linux: heap buffer overread in setpwnam() when processing 256-byte usernames

Quick assessment

Affected
util-linux util-linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

util-linux是util-linux开源的一个软件包。 util-linux存在缓冲区错误漏洞，该漏洞源于处理256字节用户名时的堆缓冲区过度读取，可能导致SUID登录工具的安全问题。

CVSS 6.1 · Medium EPSS 0.20% · P10

Affected Version Matrix 18

VendorProduct Version RangeStatus
Red Hat Red Hat Ceph Storage 7 1770632724< * unaffected
Red Hat Red Hat Ceph Storage 8 1770630907< * unaffected
Red Hat Red Hat Ceph Storage 9 1771816028< * unaffected
Red Hat Red Hat Enterprise Linux 10 0:2.40.2-15.el10_1< * unaffected
Red Hat Red Hat Enterprise Linux 6 any affected
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 0:2.32.1-48.el8_10< * unaffected
0:2.32.1-48.el8_10< * unaffected
Red Hat Red Hat Enterprise Linux 9 0:2.37.4-21.el9_7< * unaffected
0:2.37.4-21.el9_7< * unaffected
Red Hat Red Hat Hardened Images 2.42-7.1.hum1< * unaffected
Red Hat Red Hat Insights proxy 1.5 1770740405< * unaffected
Red Hat Red Hat OpenShift Container Platform 4 any affected
Red Hat Red Hat Update Infrastructure 5 1770646925< * unaffected
1773670073< * unaffected
1773672059< * unaffected
1773670137< * unaffected
util-linux util-linux < 2.41.3 affected
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I. Basic Information for CVE-2025-14104

Vulnerability Information
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Vulnerability Title
Util-linux: util-linux: heap buffer overread in setpwnam() when processing 256-byte usernames
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in util-linux. This vulnerability allows a heap buffer overread when processing 256-byte usernames, specifically within the `setpwnam()` function, affecting SUID (Set User ID) login-utils utilities writing to the password database.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
util-linux 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
util-linux是util-linux开源的一个软件包。 util-linux存在缓冲区错误漏洞，该漏洞源于处理256字节用户名时的堆缓冲区过度读取，可能导致SUID登录工具的安全问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
util-linux util-linux 0 ~ 2.41.3 -
Red Hat Red Hat Enterprise Linux 10 0:2.40.2-15.el10_1 ~ * cpe:/o:redhat:enterprise_linux:10.1
Red Hat Red Hat Enterprise Linux 8 0:2.32.1-48.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 0:2.32.1-48.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 9 0:2.37.4-21.el9_7 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9 0:2.37.4-21.el9_7 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Ceph Storage 7 1770632724 ~ * cpe:/a:redhat:ceph_storage:7::el9
Red Hat Red Hat Ceph Storage 8 1770630907 ~ * cpe:/a:redhat:ceph_storage:8::el9
Red Hat Red Hat Ceph Storage 9 1771816028 ~ * cpe:/a:redhat:ceph_storage:9::el10
Red Hat Red Hat Hardened Images 2.42-7.1.hum1 ~ * cpe:/a:redhat:hummingbird:1
Red Hat Red Hat Insights proxy 1.5 1770740405 ~ * cpe:/a:redhat:insights_proxy:1.5::el9
Red Hat Red Hat Update Infrastructure 5 1770646925 ~ * cpe:/a:redhat:rhui:5::el9
Red Hat Red Hat Update Infrastructure 5 1773670073 ~ * cpe:/a:redhat:rhui:5::el9
Red Hat Red Hat Update Infrastructure 5 1773672059 ~ * cpe:/a:redhat:rhui:5::el9
Red Hat Red Hat Update Infrastructure 5 1773670137 ~ * cpe:/a:redhat:rhui:5::el9
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2025-14104

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III. Intelligence Information for CVE-2025-14104

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Vendor Advisories for CVE-2025-14104 (9)

IV. Related Vulnerabilities

Same product: util-linux
Same vendor: util-linux
Same weakness: CWE-125

V. Comments for CVE-2025-14104

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