cbcvebase.
CVE-2025-37858
published 2025-05-09

CVE-2025-37858: In the Linux kernel, the following vulnerability has been resolved: fs/jfs: Prevent integer overflow in AG size calculation The JFS filesystem calculates…

PriorityP422medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.27%
18.9th percentile
In the Linux kernel, the following vulnerability has been resolved: fs/jfs: Prevent integer overflow in AG size calculation The JFS filesystem calculates allocation group (AG) size using 1 2TB aggregates on 32-bit systems), this 32-bit shift operation causes undefined behavior and improper AG sizing. On 32-bit architectures: - Left-shifting 1 by 32+ bits results in 0 due to integer overflow - This creates invalid AG sizes (0 or garbage values) in sbi->bmap->db_agsize - Subsequent block allocations would reference invalid AG structures - Could lead to: - Filesystem corruption during extend operations - Kernel crashes due to invalid memory accesses - Security vulnerabilities via malformed on-disk structures Fix by casting to s64 before shifting: bmp->db_agsize = (s64)1 << l2agsize; This ensures 64-bit arithmetic even on 32-bit architectures. The cast matches the data type of db_agsize (s64) and follows similar patterns in JFS block calculation code. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Affected

40 ranges· showing 25
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.135-1 (bookworm)linux 6.1.135-1 (bookworm)
debianlinux-6.1< linux 6.1.135-1 (bookworm)linux 6.1.135-1 (bookworm)
linuxlinux
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < dd07a985e2ded47b6c7d69fc93c1fe02977c8454dd07a985e2ded47b6c7d69fc93c1fe02977c8454
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8bb29629a5e4090e1ef7199cb42db04a528022398bb29629a5e4090e1ef7199cb42db04a52802239
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3d8a45f87010a802aa214bf39702ca9d99cbf3ba3d8a45f87010a802aa214bf39702ca9d99cbf3ba
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 55edbf5dbf60a8195c21e92124c4028939ae16b255edbf5dbf60a8195c21e92124c4028939ae16b2
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7ccf3b35274512b60ecb614e0637e76bd6f2d8297ccf3b35274512b60ecb614e0637e76bd6f2d829
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c802a6a4009f585111f903e810b3be9c6d0da329c802a6a4009f585111f903e810b3be9c6d0da329
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 211ed8f5e39e61f9e4d18edd64ce8005a67a1b2a211ed8f5e39e61f9e4d18edd64ce8005a67a1b2a
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ec34cdf4f917cc6abd306cf091f8b8361fedac88ec34cdf4f917cc6abd306cf091f8b8361fedac88
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7fcbf789629cdb9fbf4e2172ce31136cfed11e5e7fcbf789629cdb9fbf4e2172ce31136cfed11e5e
linuxlinux_kernel< 5.4.2935.4.293
linuxlinux_kernel>= 0 < 5.10.237-15.10.237-1
linuxlinux_kernel>= 0 < 6.1.135-16.1.135-1
linuxlinux_kernel>= 0 < 6.12.25-16.12.25-1
linuxlinux_kernel>= 0 < 6.12.25-16.12.25-1
linuxlinux_kernel>= 0 < 5.15.0-144.1575.15.0-144.157
linuxlinux_kernel>= 0 < 6.8.0-100.1006.8.0-100.100
linuxlinux_kernel>= 0 < 6.14.0-22.226.14.0-22.22
linuxlinux_kernel>= 5.11 < 5.15.1815.15.181
linuxlinux_kernel>= 5.16 < 6.1.1356.1.135
linuxlinux_kernel>= 5.5 < 5.10.2375.10.237
linuxlinux_kernel>= 6.13 < 6.13.126.13.12

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_msrc7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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