CVE-2024-35787

md/md-bitmap: fix incorrect usage for sb_index

Severity Score

"-"

*CVSS v-

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/md-bitmap: fix incorrect usage for sb_index

Commit d7038f951828 ("md-bitmap: don't use ->index for pages backing the
bitmap file") removed page->index from bitmap code, but left wrong code
logic for clustered-md. current code never set slot offset for cluster
nodes, will sometimes cause crash in clustered env.

Call trace (partly):
md_bitmap_file_set_bit+0x110/0x1d8 [md_mod]
md_bitmap_startwrite+0x13c/0x240 [md_mod]
raid1_make_request+0x6b0/0x1c08 [raid1]
md_handle_request+0x1dc/0x368 [md_mod]
md_submit_bio+0x80/0xf8 [md_mod]
__submit_bio+0x178/0x300
submit_bio_noacct_nocheck+0x11c/0x338
submit_bio_noacct+0x134/0x614
submit_bio+0x28/0xdc
submit_bh_wbc+0x130/0x1cc
submit_bh+0x1c/0x28

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: md/md-bitmap: corrige el uso incorrecto de sb_index Commit d7038f951828 ("md-bitmap: no usar ->índice para páginas que respaldan el archivo de mapa de bits") página eliminada-> índice del código de mapa de bits, pero dejó una lógica de código incorrecta para clustered-md. El código actual nunca establece el desplazamiento de ranura para los nodos del clúster, a veces causa fallos en el entorno del clúster. Rastreo de llamadas (parcialmente): md_bitmap_file_set_bit+0x110/0x1d8 [md_mod] md_bitmap_startwrite+0x13c/0x240 [md_mod] raid1_make_request+0x6b0/0x1c08 [raid1] md_handle_request+0x1dc/0x368 [md_submit_bio+0x8 0/0xf8 [md_mod] __submit_bio+0x178/ 0x300 enviar_bio_noacct_nocheck+0x11c/0x338 enviar_bio_noacct+0x134/0x614 enviar_bio+0x28/0xdc enviar_bh_wbc+0x130/0x1cc enviar_bh+0x1c/0x28

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-05-17 CVE Reserved
2024-05-17 CVE Published
2024-05-18 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (5)

URL	Tag	Source
https://git.kernel.org/stable/c/d7038f951828da19fa9aafddfa087b69032c9687	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/736ad6c577a367834118f57417038d45bb5e0a31	2024-04-03
https://git.kernel.org/stable/c/55e55eb65fd5e09faf5a0e49ffcdd37905aaf4da	2024-04-03
https://git.kernel.org/stable/c/5a95815b17428ce2f56ec18da5e0d1b2a1a15240	2024-04-03
https://git.kernel.org/stable/c/ecbd8ebb51bf7e4939d83b9e6022a55cac44ef06	2024-02-26

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"				>= 6.6 < 6.6.24 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.6.24"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.6 < 6.7.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.7.12"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.6 < 6.8.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.8.3"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.6 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.9"		en		Affected