Memory leak in Linux kernel - CVE-2023-50431

Vulnerability identifier: #VU88285

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-2023-50431

CWE-ID: CWE-401

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 memory leak within the sec_attest_info() function in drivers/accel/habanalabs/common/habanalabs_ioctl.c. A local user can cause information leak to user space.

Linux kernel
Ubuntu
linux-image-6.1.0-1035-oem (Ubuntu package)
linux-image-oem-22.04c (Ubuntu package)
linux-image-oem-22.04b (Ubuntu package)
linux-image-oem-22.04a (Ubuntu package)
linux-image-oem-22.04 (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-6.5.0-27-lowlatency (Ubuntu package)
linux-image-6.5.0-27-lowlatency-64k (Ubuntu package)
linux-image-lowlatency-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-generic-64k-hwe-22.04 (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-6.5.0-27-generic-64k (Ubuntu package)
linux-image-6.5.0-27-generic (Ubuntu package)
linux-image-virtual-hwe-22.04 (Ubuntu package)
linux-image-starfive (Ubuntu package)
linux-image-6.5.0-1011-starfive (Ubuntu package)
linux-image-6.5.0-1013-laptop (Ubuntu package)
linux-image-laptop-23.10 (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-raspi-nolpae (Ubuntu package)
linux-image-6.5.0-1014-raspi (Ubuntu package)
linux-image-6.5.0-1017-aws (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-6.5.0-1017-gcp (Ubuntu package)
linux-image-azure-fde (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-6.5.0-1018-azure-fde (Ubuntu package)
linux-image-6.5.0-1018-azure (Ubuntu package)
linux-image-6.5.0-1019-oem (Ubuntu package)
linux-image-oem-22.04d (Ubuntu package)
linux-image-6.5.0-1020-oracle-64k (Ubuntu package)
linux-image-6.5.0-1020-oracle (Ubuntu package)
linux-image-oracle-64k (Ubuntu package)
linux-image-oracle (Ubuntu package)

Install updates from vendor's website.

linux-image-6.1.0-1035-oem (Ubuntu package) - update to 6.1.0-1035.35
linux-image-oem-22.04c (Ubuntu package) - addressed in versions 6.1.0.1035.36, 6.5.0.1019.21
linux-image-oem-22.04b (Ubuntu package) - addressed in versions 6.1.0.1035.36, 6.5.0.1019.21
linux-image-oem-22.04a (Ubuntu package) - addressed in versions 6.1.0.1035.36, 6.5.0.1019.21
linux-image-oem-22.04 (Ubuntu package) - addressed in versions 6.1.0.1035.36, 6.5.0.1019.21
linux-image-kvm (Ubuntu package) - update to 6.5.0.27.27
linux-image-generic-lpae (Ubuntu package) - update to 6.5.0.27.27
linux-image-generic-64k (Ubuntu package) - update to 6.5.0.27.27
linux-image-generic (Ubuntu package) - update to 6.5.0.27.27
linux-image-virtual (Ubuntu package) - update to 6.5.0.27.27
linux-image-6.5.0-27-lowlatency (Ubuntu package) - update to 6.5.0-27.28.1~22.04.1
linux-image-6.5.0-27-lowlatency-64k (Ubuntu package) - update to 6.5.0-27.28.1~22.04.1
linux-image-lowlatency-hwe-22.04 (Ubuntu package) - update to 6.5.0.27.28.1~22.04.1
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package) - update to 6.5.0.27.28.1~22.04.1
linux-image-lowlatency-64k (Ubuntu package) - update to 6.5.0.27.28.18
linux-image-lowlatency (Ubuntu package) - update to 6.5.0.27.28.18
linux-image-generic-64k-hwe-22.04 (Ubuntu package) - update to 6.5.0.27.28~22.04.1
linux-image-generic-hwe-22.04 (Ubuntu package) - update to 6.5.0.27.28~22.04.1
linux-image-6.5.0-27-generic-64k (Ubuntu package) - update to 6.5.0-27.28~22.04.1
linux-image-6.5.0-27-generic (Ubuntu package) - update to 6.5.0-27.28~22.04.1
linux-image-virtual-hwe-22.04 (Ubuntu package) - update to 6.5.0.27.28~22.04.1
linux-image-starfive (Ubuntu package) - addressed in versions 6.5.0.1011.12~22.04.1, 6.5.0.1011.13
linux-image-6.5.0-1011-starfive (Ubuntu package) - update to 6.5.0-1011.12~22.04.1
linux-image-6.5.0-1013-laptop (Ubuntu package) - update to 6.5.0-1013.16
linux-image-laptop-23.10 (Ubuntu package) - update to 6.5.0.1013.16
linux-image-raspi (Ubuntu package) - update to 6.5.0.1014.15
linux-image-raspi-nolpae (Ubuntu package) - update to 6.5.0.1014.15
linux-image-6.5.0-1014-raspi (Ubuntu package) - update to 6.5.0-1014.17
linux-image-6.5.0-1017-aws (Ubuntu package) - addressed in versions 6.5.0-1017.17, 6.5.0-1017.17~22.04.2
linux-image-aws (Ubuntu package) - addressed in versions 6.5.0.1017.17, 6.5.0.1017.17~22.04.2
linux-image-gcp (Ubuntu package) - update to 6.5.0.1017.17~22.04.1
linux-image-6.5.0-1017-gcp (Ubuntu package) - update to 6.5.0-1017.17~22.04.1
linux-image-azure-fde (Ubuntu package) - addressed in versions 6.5.0.1018.19~22.04.2, 6.5.0.1018.22
linux-image-azure (Ubuntu package) - addressed in versions 6.5.0.1018.19~22.04.2, 6.5.0.1018.22
linux-image-6.5.0-1018-azure-fde (Ubuntu package) - update to 6.5.0-1018.19~22.04.2
linux-image-6.5.0-1018-azure (Ubuntu package) - update to 6.5.0-1018.19~22.04.2
linux-image-6.5.0-1019-oem (Ubuntu package) - update to 6.5.0-1019.20
linux-image-oem-22.04d (Ubuntu package) - update to 6.5.0.1019.21
linux-image-6.5.0-1020-oracle-64k (Ubuntu package) - update to 6.5.0-1020.20~22.04.1
linux-image-6.5.0-1020-oracle (Ubuntu package) - update to 6.5.0-1020.20~22.04.1
linux-image-oracle-64k (Ubuntu package) - addressed in versions 6.5.0.1020.20~22.04.1, 6.5.0.1020.22
linux-image-oracle (Ubuntu package) - addressed in versions 6.5.0.1020.20~22.04.1, 6.5.0.1020.22

• https://lists.freedesktop.org/archives/dri-devel/2023-November/431772.html
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a9f07790a4b2250f0140e9a61c7f842fd9b618c7

• Information disclosure in Linux kernel accel driver
• Ubuntu update for linux
• Ubuntu update for linux-aws-6.5
• Ubuntu update for linux-oem-6.1