CVE-2025-39840
highPriorität · verfolgen · 28EPSS 0.002 · 4. PerzentilDEEURUUSEPSS · bewertet 2026-10-22
In the Linux kernel, the following vulnerability has been resolved: audit: fix out-of-bounds read in audit_compare_dname_path() When a watch on dir=/ is combined with an fsnotify event for a single-character name directly under / (e.g., creating /a), an out-of-bounds read can occur in audit_compare_dname_path(). The helper parent_len() returns 1 for "/". In audit_compare_dname_path(), when parentlen equals the full path length (1), the code sets p = path + 1 and pathlen = 1 - 1 = 0. The subsequent loop then dereferences p[pathlen - 1] (i.e., p[-1]), causing an out-of-bounds read. Fix this by adding a pathlen > 0 check to the while loop condition to prevent the out-of-bounds access. [PM: subject tweak, sign-off email fixes]
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cvss
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Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5.5–7.1
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
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betroffene Produkte (30)
Betroffene Produkte und Versionsbereiche.
Advisories (4)
Hersteller- und Ökosystem-Meldungen dazu.
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- RHSA-2026:0453security update for kernel2026-01-12csaf · suse_csafDE
security update for kernel
- WID-SEC-W-2025-2099Linux Kernel: Mehrere SchwachstellenDeutsch2025-09-21csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder nicht näher beschriebene Auswirkungen zu erzielen.
- WID-SEC-W-2026-2253IBM Security Verify Access: Mehrere SchwachstellenDeutsch2026-07-08csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in IBM Security Verify Access ausnutzen, um erweiterte Berechtigungen zu erlangen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, sensible Informationen offenzulegen und andere, nicht näher bezeichnete Angriffe durchzuführen.
auch bekannt als (4)
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quellen
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Referenzen (8)
Externe Belege — Patches, Meldungen, Analysen.
- https://git.kernel.org/stable/c/4540f1d23e7f387880ce46d11b5cd3f27248bf8dcnnvd
- https://git.kernel.org/stable/c/9735a9dcc307427e7d6336c54171682f1bac9789cnnvd
- https://vigilance.fr/vulnerability/Linux-kernel-multiple-vulnerabilities-dated-22-09-2025-48265cnnvd
- https://www.kernel.org/Patchcnnvd
- https://git.kernel.org/stable/c/4540f1d23e7f387880ce46d11b5cd3f27248bf8denisa_euvd
- https://git.kernel.org/stable/c/9735a9dcc307427e7d6336c54171682f1bac9789enisa_euvd
- https://git.kernel.org/stable/c/4540f1d23e7f387880ce46d11b5cd3f27248bf8dPatchnvd
- https://git.kernel.org/stable/c/9735a9dcc307427e7d6336c54171682f1bac9789Patchnvd
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