SB20240531397 - NULL pointer dereference in Linux kernel misc cardreader driver
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531397
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2021-47333)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the alcor_pci_init_check_aspm() function in drivers/misc/cardreader/alcor_pci.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/d2639ffdcad463b358b6bef8645ff81715daffcb
- https://git.kernel.org/stable/c/58f69684ba03e5b0e0a3ae844a845280c0f06309
- https://git.kernel.org/stable/c/717cf5ae52322ddbdf3ac2c584b34c5970b0d174
- https://git.kernel.org/stable/c/09d154990ca82d14aed2b72796f6c8845e2e605d
- https://git.kernel.org/stable/c/3ce3e45cc333da707d4d6eb433574b990bcc26f5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.52
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.134