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Tracker / CVE-2022-49762

CVE-2022-49762

Media 5.5

In the Linux kernel, the following vulnerability has been resolved: ntfs: check overflow when iterating ATTR_RECORDs Kernel iterates over ATTR_RECORDs in mft record in ntfs_attr_find(). Because the ATTR_RECORDs are next to each other, kernel can get the next ATTR_RECORD from end address of current ATTR_RECORD, through current ATTR_RECORD length field. The problem is that during iteration, when kernel calculates the end address of current ATTR_RECORD, kernel may trigger an integer overflow bug in executing `a = (ATTR_RECORD*)((u8*)a + le32_to_cpu(a->length))`. This may wrap, leading to a forever iteration on 32bit systems. This patch solves it by adding some checks on calculating end address of current ATTR_RECORD during iteration.

Prodotti e versioni affette

linux linux_kernel · … → 4.9.334
linux linux_kernel · 4.10 → 4.14.300
linux linux_kernel · 4.15 → 4.19.267
linux linux_kernel · 4.20 → 5.4.225
linux linux_kernel · 5.11 → 5.15.80
linux linux_kernel · 5.16 → 6.0.10
linux linux_kernel · 5.5 → 5.10.156

Analisi

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