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CVE-2024-46744 affects symbolic-link handling in the Linux kernel's Squashfs filesystem. Insufficient validation allows squashfs_read_inode() to assign a corrupted on-disk symbolic-link size to inode->i_size. When squashfs_symlink_read_folio() subsequently assigns that size to a signed integer length variable, an oversized value becomes negative. The negative length causes the loop responsible for populating the page to be skipped, leaving the page uninitialized. Subsequent symbolic-link processing triggers an uninitialized-value use in pick_link(), detected by KMSAN.
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A Linux kernel Squashfs vulnerability involving insufficient validation of symbolic link sizes. A corrupted on-disk size can become negative when assigned to a signed integer, preventing page initialization and causing an uninitialized-memory access. The advisory rates it High, with a CVSS v3 base score of 7.8, and identifies affected Google COS kernel packages.
Linux kernel Squashfs symbolic-link-size validation flaw.
Linux kernel vulnerability covered by the security update.
A vulnerability referenced in a Red Hat Enterprise Linux 9.6 kernel-package security update; the content provides no technical flaw description.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.