cbcvebase.
CVE-2024-56619
published 2024-12-27

CVE-2024-56619: In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry() Syzbot reported…

PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.21%
11.7th percentile
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry() Syzbot reported that when searching for records in a directory where the inode's i_size is corrupted and has a large value, memory access outside the folio/page range may occur, or a use-after-free bug may be detected if KASAN is enabled. This is because nilfs_last_byte(), which is called by nilfs_find_entry() and others to calculate the number of valid bytes of directory data in a page from i_size and the page index, loses the upper 32 bits of the 64-bit size information due to an inappropriate type of local variable to which the i_size value is assigned. This caused a large byte offset value due to underflow in the end address calculation in the calling nilfs_find_entry(), resulting in memory access that exceeds the folio/page size. Fix this issue by changing the type of the local variable causing the bit loss from "unsigned int" to "u64". The return value of nilfs_last_byte() is also of type "unsigned int", but it is truncated so as not to exceed PAGE_SIZE and no bit loss occurs, so no change is required.

Affected

24 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.123-1 (bookworm)linux 6.1.123-1 (bookworm)
debianlinux-6.1< linux 6.1.123-1 (bookworm)linux 6.1.123-1 (bookworm)
linuxlinux
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 09d6d05579fd46e61abf6e457bb100ff11f3a9d309d6d05579fd46e61abf6e457bb100ff11f3a9d3
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < e3732102a9d638d8627d14fdf7b208462f0520e0e3732102a9d638d8627d14fdf7b208462f0520e0
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 48eb6e7404948032bbe811c5affbe39f6b31695148eb6e7404948032bbe811c5affbe39f6b316951
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 5af8366625182f01f6d8465c9a3210574673af575af8366625182f01f6d8465c9a3210574673af57
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < c3afea07477baccdbdec4483f8d5e59d42a3f67fc3afea07477baccdbdec4483f8d5e59d42a3f67f
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 31f7b57a77d4c82a34ddcb6ff35b5aa577ef153e31f7b57a77d4c82a34ddcb6ff35b5aa577ef153e
linuxlinux>= 2ba466d74ed74f073257f86e61519cb8f8f46184 < 985ebec4ab0a28bb5910c3b1481a40fbf7f9e61d985ebec4ab0a28bb5910c3b1481a40fbf7f9e61d
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.234-15.10.234-1
linuxlinux_kernel>= 0 < 6.1.123-16.1.123-1
linuxlinux_kernel>= 0 < 6.12.5-16.12.5-1
linuxlinux_kernel>= 0 < 6.12.5-16.12.5-1
linuxlinux_kernel>= 0 < 5.4.0-211.2315.4.0-211.231
linuxlinux_kernel>= 0 < 5.15.0-135.1465.15.0-135.146
linuxlinux_kernel>= 0 < 6.8.0-58.606.8.0-58.60
linuxlinux_kernel>= 2.6.30 < 5.4.2875.4.287
linuxlinux_kernel>= 5.11 < 5.15.1745.15.174
linuxlinux_kernel>= 5.16 < 6.1.1206.1.120
linuxlinux_kernel>= 5.5 < 5.10.2315.10.231
linuxlinux_kernel6.2 – 6.6.66
linuxlinux_kernel6.7 – 6.12.5

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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