cbcvebase.
CVE-2024-38598
published 2024-06-19

CVE-2024-38598: In the Linux kernel, the following vulnerability has been resolved: md: fix resync softlockup when bitmap size is less than array size Is is reported that for…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.20%
9.7th percentile
In the Linux kernel, the following vulnerability has been resolved: md: fix resync softlockup when bitmap size is less than array size Is is reported that for dm-raid10, lvextend + lvchange --syncaction will trigger following softlockup: kernel:watchdog: BUG: soft lockup - CPU#3 stuck for 26s! [mdX_resync:6976] CPU: 7 PID: 3588 Comm: mdX_resync Kdump: loaded Not tainted 6.9.0-rc4-next-20240419 #1 RIP: 0010:_raw_spin_unlock_irq+0x13/0x30 Call Trace: md_bitmap_start_sync+0x6b/0xf0 raid10_sync_request+0x25c/0x1b40 [raid10] md_do_sync+0x64b/0x1020 md_thread+0xa7/0x170 kthread+0xcf/0x100 ret_from_fork+0x30/0x50 ret_from_fork_asm+0x1a/0x30 And the detailed process is as follows: md_do_sync j = mddev->resync_min while (j < max_sectors) sectors = raid10_sync_request(mddev, j, &skipped) if (!md_bitmap_start_sync(..., &sync_blocks)) // md_bitmap_start_sync set sync_blocks to 0 return sync_blocks + sectors_skippe; // sectors = 0; j += sectors; // j never change Root cause is that commit 301867b1c168 ("md/raid10: check slab-out-of-bounds in md_bitmap_get_counter") return early from md_bitmap_get_counter(), without setting returned blocks. Fix this problem by always set returned blocks from md_bitmap_get_counter"(), as it used to be. Noted that this patch just fix the softlockup problem in kernel, the case that bitmap size doesn't match array size still need to be fixed.

Affected

35 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.94-1 (bookworm)linux 6.1.94-1 (bookworm)
linuxlinux
linuxlinux
linuxlinux
linuxlinux>= 301867b1c16805aebbc306aafa6ecdc68b73c7e5 < c9566b812c8f66160466cc1e29df6d3646add0b1c9566b812c8f66160466cc1e29df6d3646add0b1
linuxlinux>= 301867b1c16805aebbc306aafa6ecdc68b73c7e5 < 5817f43ae1a118855676f57ef7ab50e37eac74825817f43ae1a118855676f57ef7ab50e37eac7482
linuxlinux>= 301867b1c16805aebbc306aafa6ecdc68b73c7e5 < 8bbc71315e0ae4bb7e37f8d43b915e1cb01a481b8bbc71315e0ae4bb7e37f8d43b915e1cb01a481b
linuxlinux>= 301867b1c16805aebbc306aafa6ecdc68b73c7e5 < f0e729af2eb6bee9eb58c4df1087f14ebaefe26bf0e729af2eb6bee9eb58c4df1087f14ebaefe26b
linuxlinux>= 374fb914304d9b500721007f3837ea8f1f9a2418 < d4b9c764d48fa41caa24cfb4275f3aa9fb4bd798d4b9c764d48fa41caa24cfb4275f3aa9fb4bd798
linuxlinux>= 39fa14e824acfd470db4f42c354297456bd82b53 < 3f5b73ef8fd6268cbc968b308d8eafe56fda97f33f5b73ef8fd6268cbc968b308d8eafe56fda97f3
linuxlinux>= 4.19.291 < 4.19.3164.19.316
linuxlinux>= 5.10.188 < 5.10.2195.10.219
linuxlinux>= 5.15.121 < 5.15.1615.15.161
linuxlinux>= 5.4.251 < 5.4.2785.4.278
linuxlinux>= 6.1.39 < 6.1.936.1.93
linuxlinux>= 6.3.13 < 6.46.4
linuxlinux>= 6.4.4 < 6.56.5
linuxlinux>= a134dd582c0d5b6068efa308bd485cf1d00b3f65 < 69296914bfd508c85935bf5f711cad9b0fe7849269296914bfd508c85935bf5f711cad9b0fe78492
linuxlinux>= b0b971fe7d61411ede63c3291764dbde1577ef2c < 43771597feba89a839c5f893716df88ae5c237ce43771597feba89a839c5f893716df88ae5c237ce
linuxlinux>= be1a3ec63a840cc9e59a033acf154f56255699a1 < 71e8e4f288e74a896b6d9cd194f3bab12bd7a10f71e8e4f288e74a896b6d9cd194f3bab12bd7a10f
linuxlinux_kernel>= 0 < 5.10.221-15.10.221-1
linuxlinux_kernel>= 0 < 6.1.94-16.1.94-1
linuxlinux_kernel>= 0 < 6.8.12-16.8.12-1
linuxlinux_kernel>= 0 < 6.8.12-16.8.12-1
linuxlinux_kernel>= 0 < 5.4.0-192.2125.4.0-192.212

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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