CVE-2024-26900
Assigner: Linux
Published: 2024-04-17T10:27:49.707Z
State: PUBLISHED
descriptions: value: In the Linux kernel, the following vulnerability has been resolved:

md: fix kmemleak of rdev->serial

If kobject_add() is fail in bind_rdev_to_array(), 'rdev->serial' will be
alloc not be freed, and kmemleak occurs.

unreferenced object 0xffff88815a350000 (size 49152):
  comm "mdadm", pid 789, jiffies 4294716910
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc f773277a):
    [<0000000058b0a453>] kmemleak_alloc+0x61/0xe0
    [<00000000366adf14>] __kmalloc_large_node+0x15e/0x270
    [<000000002e82961b>] __kmalloc_node.cold+0x11/0x7f
    [<00000000f206d60a>] kvmalloc_node+0x74/0x150
    [<0000000034bf3363>] rdev_init_serial+0x67/0x170
    [<0000000010e08fe9>] mddev_create_serial_pool+0x62/0x220
    [<00000000c3837bf0>] bind_rdev_to_array+0x2af/0x630
    [<0000000073c28560>] md_add_new_disk+0x400/0x9f0
    [<00000000770e30ff>] md_ioctl+0x15bf/0x1c10
    [<000000006cfab718>] blkdev_ioctl+0x191/0x3f0
    [<0000000085086a11>] vfs_ioctl+0x22/0x60
    [<0000000018b656fe>] __x64_sys_ioctl+0xba/0xe0
    [<00000000e54e675e>] do_syscall_64+0x71/0x150
    [<000000008b0ad622>] entry_SYSCALL_64_after_hwframe+0x6c/0x74
affected: product: Linux
vendor: Linux
defaultStatus: unaffected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions: version: 963c555e75b0
lessThan: fb5b347efd1b
status: affected
versionType: git
version: 963c555e75b0
lessThan: f3a1787dc482
status: affected
versionType: git
version: 963c555e75b0
lessThan: beaf11969fd5
status: affected
versionType: git
version: 963c555e75b0
lessThan: 9fd0198f7ef0
status: affected
versionType: git
version: 963c555e75b0
lessThan: 6d32c832a885
status: affected
versionType: git
version: 963c555e75b0
lessThan: 4c1021ce46fc
status: affected
versionType: git
version: 963c555e75b0
lessThan: 6cf350658736
status: affected
versionType: git
product: Linux
vendor: Linux
defaultStatus: affected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions: version: 5.3
status: affected
version: 0
lessThan: 5.3
status: unaffected
versionType: custom
version: 5.10.217
lessThanOrEqual: 5.10.*
status: unaffected
versionType: custom
version: 5.15.159
lessThanOrEqual: 5.15.*
status: unaffected
versionType: custom
version: 6.1.91
lessThanOrEqual: 6.1.*
status: unaffected
versionType: custom
version: 6.6.31
lessThanOrEqual: 6.6.*
status: unaffected
versionType: custom
version: 6.7.11
lessThanOrEqual: 6.7.*
status: unaffected
versionType: custom
version: 6.8.2
lessThanOrEqual: 6.8.*
status: unaffected
versionType: custom
version: 6.9
lessThanOrEqual: *
status: unaffected
versionType: original_commit_for_fix
title: md: fix kmemleak of rdev->serial
x_generator: engine: bippy-d175d3acf727