Information disclosure in Linux kernel - CVE-2020-36778

Vulnerability identifier: #VU91403

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-36778

CWE-ID: CWE-200

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to information disclosure within the xiic_xfer() and xiic_i2c_remove() functions in drivers/i2c/busses/i2c-xiic.c. A local user can gain access to sensitive information.

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

Install update from vendor's website.

Linux kernel - addressed in versions 5.10.37, 5.11.21, 5.12.4, 5.13
kernel-source - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
kernel - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
kernel-tools - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
perf-debuginfo - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
python2-perf - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
kernel-devel - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
python3-perf - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
python2-perf-debuginfo - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
bpftool-debuginfo - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
kernel-tools-debuginfo - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
kernel-debuginfo - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
kernel-tools-devel - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
kernel-debugsource - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
python3-perf-debuginfo - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
bpftool - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271
perf - addressed in versions 4.19.90-2403.3.0.0244, 4.19.90-2403.4.0.0271

• https://git.kernel.org/stable/c/c977426db644ba476938125597947979e8aba725
• https://git.kernel.org/stable/c/e2ba996577eaea423694dc69ae43d56f1410a22b
• https://git.kernel.org/stable/c/a42ac16e6573f19c78f556ea292f5b534fcc4514
• https://git.kernel.org/stable/c/a85c5c7a3aa8041777ff691400b4046e56149fd3
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13

• Information disclosure in Linux kernel i2c busses driver
• openEuler 20.03 LTS SP1 update for kernel
• openEuler 20.03 LTS SP4 update for kernel