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Vulnerability Spotlight: Multiple vulnerabilities in AT&T Labs’ Xmill utility
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Fwd: XZ Utils 5.8.4 and a security fix
XZ Utils 5.8.4 fixes an invalid memory write that occurs when a decoder is reinitialized after allocation failure in 5.8.3 and older.
XZ Utils 5.8.4 has been released with a security fix for versions 5.8.3 and older. The flaw is an invalid memory write that can occur when a decoder is reinitialized after an allocation failure. The announcement was posted on the oss-security mailing list by Sam James pointing to the upstream stable release. Users and distributions running affected versions should upgrade to 5.8.4.
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Vulnerability fixes in util-linux-2.42.3
util-linux 2.42.3 patches mount(8) flaws CVE-2026-76642 and CVE-2026-78410, which allow privileged operations after mount helper failure.
util-linux 2.42.3 ships security fixes for two mount(8) vulnerabilities. CVE-2026-76642 causes post-mount hooks (X-mount.idmap, X-mount.owner/group/mode) to run even when an external mount helper exits nonzero, permitting privileged operations on the pre-existing target filesystem. CVE-2026-78410 is a time-of-check-to-time-of-use (TOCTOU) issue in mount(8). No exploitation or PoC is mentioned in the release notes.
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Multiple Vulnerabilities Discovered in a SCADA System
Unit 42 details five vulnerabilities (CVSS 7.0-7.8) in ICONICS Suite SCADA software enabling privilege escalation and DoS.
Unit 42 discovered five vulnerabilities (CVE-2024-1182, CVE-2024-7587, CVE-2024-8299, CVE-2024-8300, CVE-2024-9852) in ICONICS Suite versions 10.97.2 and earlier for Windows during a 2024 security assessment. The flaws, rated CVSS 7.0-7.8, allow DLL hijacking, privilege escalation, information disclosure, denial-of-service and potentially full system compromise. ICONICS Suite is a SCADA solution with hundreds of thousands of installations in over 100 countries, widely used in critical infrastructure, and several dozen servers are internet-exposed per Unit 42 telemetry. ICONICS released patches and advisories with workarounds in 2024.
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Re: Vulnerability fixes in util-linux-2.42.3
util-linux 2.42.3 includes vulnerability fixes, with a commit link shared for downstream tracking but no CVEs cited.
An oss-security post links a util-linux commit (286dd3ff41526b582ef48830de239dffbaa61f90) as part of the 2.42.3 vulnerability fix release. No CVE identifiers, flaw descriptions, or exploitation details are provided. The item is a routine open-source fix notification for downstream distributors.
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Backdoor Xz Utils Linux Open Source
Infosecurity Magazine covers the XZ Utils open-source backdoor, a malicious implant in liblzma that targeted OpenSSH on major Linux distributions.
The article covers the XZ Utils backdoor, a malicious implant introduced into the widely used open-source compression library. The compromised liblzma code manipulated functions used by OpenSSH, nearly reaching stable releases of major Linux distributions before discovery. The incident is a prominent example of software supply chain compromise targeting critical open-source infrastructure.
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