CVE-2024-26900

md: fix kmemleak of rdev->serial

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

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

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: md: corrige kmemleak de rdev->serial Si kobject_add() falla en bind_rdev_to_array(), 'rdev->serial' se asignará y no se liberará, y se produce kmemleak. objeto sin referencia 0xffff88815a350000 (tamaño 49152): comm "mdadm", pid 789, jiffies 4294716910 volcado hexadecimal (primeros 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 ................ retroceso (crc f773277a): [<0000000058b0a453> ] kmemleak_alloc+0x61/0xe0 [<00000000366adf14>] __kmalloc_large_node+0x15e/0x270 [<000000002e82961b>] __kmalloc_node.cold+0x11/0x7f [<00000000f206d60a>] loc_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 [<00000 0008b0ad622>] entrada_SYSCALL_64_after_hwframe+0x6c/0x74

*Credits: N/A

CVSS Scores

NISTv3.1 5.5

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-02-19 CVE Reserved
2024-04-17 CVE Published
2024-04-30 EPSS Updated
2024-09-12 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-401: Missing Release of Memory after Effective Lifetime

CAPEC

References (9)

URL	Tag	Source
https://git.kernel.org/stable/c/963c555e75b033202dd76cf6325a7b7c83d08d5f	Vuln. Introduced
https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/fb5b347efd1bda989846ffc74679d181222fb123	2024-05-17
https://git.kernel.org/stable/c/f3a1787dc48213f6caea5ba7d47e0222e7fa34a9	2024-05-17
https://git.kernel.org/stable/c/beaf11969fd5cbe6f09cefaa34df1ce8578e8dd9	2024-05-17
https://git.kernel.org/stable/c/9fd0198f7ef06ae0d6636fb0578560857dead995	2024-05-17
https://git.kernel.org/stable/c/6d32c832a88513f65c2c2c9c75954ee8b387adea	2024-03-26
https://git.kernel.org/stable/c/4c1021ce46fc2fb6115f7e79d353941e6dcad366	2024-03-26
https://git.kernel.org/stable/c/6cf350658736681b9d6b0b6e58c5c76b235bb4c4	2024-02-12

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.3 < 5.10.217 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.3 < 5.10.217"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.3 < 5.15.159 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.3 < 5.15.159"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.3 < 6.1.91 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.3 < 6.1.91"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.3 < 6.6.31 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.3 < 6.6.31"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.3 < 6.7.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.3 < 6.7.11"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.3 < 6.8.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.3 < 6.8.2"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.3 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.3 < 6.9"		en		Affected