SB2019090444 - Multiple vulnerabilities in Linux kernel

Description

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2019-15922)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the Linux kernel before 5.0.9. There is a NULL pointer dereference for a pf data structure if alloc_disk fails in drivers/block/paride/pf.c. A remote attacker can perform a denial of service (DoS) attack.

2) NULL pointer dereference (CVE-ID: CVE-2019-15923)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the Linux kernel before 5.0.9. There is a NULL pointer dereference for a cd data structure if alloc_disk fails in drivers/block/paride/pf.c. A remote attacker can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.9
• https://github.com/torvalds/linux/commit/58ccd2d31e502c37e108b285bf3d343eb00c235b
• https://security.netapp.com/advisory/ntap-20191004-0001/
• https://github.com/torvalds/linux/commit/f0d1762554014ce0ae347b9f0d088f2c157c8c72