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CVE-2025-71265: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: fix infinite loop in attr_load_runs_range on inconsistent metadata We found an infinite loop bug in the ntfs3 file system that can lead to a Denial-of-Service (DoS) condition. A malformed NTFS image can cause an infinite loop when an attribute header indicates an empty run list, while directory entries reference it as containing actual data. In NTFS, setting evcn=-1 with svcn=0 is a valid way to represent an empty run list, and run_unpack() correctly handles this by checking if evcn + 1 equals svcn and returning early without parsing any run data. However, this creates a problem when there is metadata inconsistency, where the attribute header claims to be empty (evcn=-1) but the caller expects to read actual data. When run_unpack() immediately returns success upon seeing this condition, it leaves the runs_tree uninitialized with run->runs as a NULL. The calling function attr_load_runs_range() assumes that a successful return means that the runs were loaded and sets clen to 0, expecting the next run_lookup_entry() call to succeed. Because runs_tree remains uninitialized, run_lookup_entry() continues to fail, and the loop increments vcn by zero (vcn += 0), leading to an infinite loop. This patch adds a retry counter to detect when run_lookup_entry() fails consecutively after attr_load_runs_vcn(). If the run is still not found on the second attempt, it indicates corrupted metadata and returns -EINVAL, preventing the Denial-of-Service (DoS) vulnerability.

    Засегнати продукти

    • Linux Linux: be71b5cba2e6485e8959da7a9f9a44461a1bb074 преди 6f07a590616ff5f57f7c041d98e463fad9e9f763; be71b5cba2e6485e8959da7a9f9a44461a1bb074 преди a89bc96d5abd8a4a8d5d911884ea347efcdf460b; be71b5cba2e6485e8959da7a9f9a44461a1bb074 преди af839013c70a24779f9d1afb1575952009312d38; be71b5cba2e6485e8959da7a9f9a44461a1bb074 преди 78b61f7eac37a63284774b147f38dd0be6cad43c; be71b5cba2e6485e8959da7a9f9a44461a1bb074 преди c0b43c45d45f59e7faad48675a50231a210c379b; be71b5cba2e6485e8959da7a9f9a44461a1bb074 преди 3c3a6e951b9b53dab2ac460a655313cf04c4a10a; be71b5cba2e6485e8959da7a9f9a44461a1bb074 преди 4b90f16e4bb5607fb35e7802eb67874038da4640
    • Linux Linux: 5.15; преди 5.15; 5.15.202 до 5.15.*; 6.1.165 до 6.1.*; 6.6.128 до 6.6.*; 6.12.75 до 6.12.*; 6.18.16 до 6.18.*; 6.19.6 до 6.19.*; от 7.0 нататък
    • Siemens: още 3 продукта, добавени от Siemens

      SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP, SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

    История

    • 18 март 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2025-71265: Linux | freedomonline.bg