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

A memory leak flaw was found in rdev->serial in the Linux kernel. This issue may lead to a crash.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

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
2024-12-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-401: Missing Release of Memory after Effective Lifetime
CWE-402: Transmission of Private Resources into a New Sphere ('Resource Leak')

CAPEC

References (11)

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
https://access.redhat.com/security/cve/CVE-2024-26900	2024-11-12
https://bugzilla.redhat.com/show_bug.cgi?id=2275647	2024-11-12

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