CVE-2022-49569

Severity CVSS v4.0:

Pending analysis

Type:

CWE-476 NULL Pointer Dereference

Publication date:

26/02/2025

Last modified:

01/10/2025

Description

In the Linux kernel, the following vulnerability has been resolved: spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers In case a IRQ based transfer times out the bcm2835_spi_handle_err() function is called. Since commit 1513ceee70f2 ("spi: bcm2835: Drop dma_pending flag") the TX and RX DMA transfers are unconditionally canceled, leading to NULL pointer derefs if ctlr->dma_tx or ctlr->dma_rx are not set. Fix the NULL pointer deref by checking that ctlr->dma_tx and ctlr->dma_rx are valid pointers before accessing them.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.4 (including)	5.4.208 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.134 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.58 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	5.18.15 (excluding)
cpe:2.3:o:linux:linux_kernel:5.19:rc1::::::
cpe:2.3:o:linux:linux_kernel:5.19:rc2::::::
cpe:2.3:o:linux:linux_kernel:5.19:rc3::::::
cpe:2.3:o:linux:linux_kernel:5.19:rc4::::::
cpe:2.3:o:linux:linux_kernel:5.19:rc5::::::
cpe:2.3:o:linux:linux_kernel:5.19:rc6::::::
cpe:2.3:o:linux:linux_kernel:5.19:rc7::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2022-49569

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools