NULL pointer dereference in Linux kernel - CVE-2022-48795

Vulnerability identifier: #VU94442

CSH Severity: Low

CVSS v4 BT: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-48795

CWE-ID: CWE-476

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the sba_unmap_sg() function in drivers/parisc/sba_iommu.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
openEuler
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python2-perf
python2-perf-debuginfo
python3-perf
python3-perf-debuginfo

Install update from vendor's website.

Linux kernel - addressed in versions 4.9.303, 4.14.268, 4.19.231, 5.4.181, 5.10.102, 5.15.25, 5.16.11, 5.17
kernel - update to 4.19.90-2408.5.0.0292
bpftool - update to 4.19.90-2408.5.0.0292
bpftool-debuginfo - update to 4.19.90-2408.5.0.0292
kernel-debuginfo - update to 4.19.90-2408.5.0.0292
kernel-debugsource - update to 4.19.90-2408.5.0.0292
kernel-devel - update to 4.19.90-2408.5.0.0292
kernel-source - update to 4.19.90-2408.5.0.0292
kernel-tools - update to 4.19.90-2408.5.0.0292
kernel-tools-debuginfo - update to 4.19.90-2408.5.0.0292
kernel-tools-devel - update to 4.19.90-2408.5.0.0292
perf - update to 4.19.90-2408.5.0.0292
perf-debuginfo - update to 4.19.90-2408.5.0.0292
python2-perf - update to 4.19.90-2408.5.0.0292
python2-perf-debuginfo - update to 4.19.90-2408.5.0.0292
python3-perf - update to 4.19.90-2408.5.0.0292
python3-perf-debuginfo - update to 4.19.90-2408.5.0.0292

• https://git.kernel.org/stable/c/f23f0444ead4d941165aa82ce2fcbb997dc00e97
• https://git.kernel.org/stable/c/de75676ee99bf9f25b1124ff301b3f7b8ba597d4
• https://git.kernel.org/stable/c/867e50231c7605547d9334904d70a181f39f2d9e
• https://git.kernel.org/stable/c/efccc9b0c7e28d0eb7918a236e59f60dc23db4c3
• https://git.kernel.org/stable/c/f8f519d7df66c334b5e08f896ac70ee3b53add3b
• https://git.kernel.org/stable/c/8c8e949ae81e7f5ab58f9f9f8e9b573b93173dd2
• https://git.kernel.org/stable/c/e40ae3133ed87d6d526f3c8fc6a5f9a2d72dcdbf
• https://git.kernel.org/stable/c/b7d6f44a0fa716a82969725516dc0b16bc7cd514
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.268
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.231
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.303
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.102
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.25
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.11
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.181

• NULL pointer dereference in Linux kernel parisc driver
• openEuler 20.03 LTS SP4 update for kernel