CVE-2022-2977 — Use After Free in Kernel

CWE-416 — Use After Free6 documents6 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 94.72%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Linux KernelDebian LinuxMsrc Cbl2 Kernel 5.15.70.1-1 ON CBL Mariner 2.0+1 more
Timeline
PublishedSep 14
Latest updateSep 15

Description

A flaw was found in the Linux kernel implementation of proxied virtualized TPM devices. On a system where virtualized TPM devices are configured (this is not the default) a local attacker can create a use-after-free and create a situation where it may be possible to escalate privileges on the system.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages6 packages

▶NVDlinux/linux_kernel4.12 — 4.14.276+6
▶Debianlinux/linux_kernel< 5.10.113-1+3
▶CVEListV5linux/linux_kernelLinux kernel versions prior to 5.18
▶debiandebian/linux< linux 5.17.3-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-c5mq-2wv7-w9f4: A flaw was found in the Linux kernel implementation of proxied virtualized TPM devices↗2022-09-15
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OSV
CVE-2022-2977: A flaw was found in the Linux kernel implementation of proxied virtualized TPM devices↗2022-09-14
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📋Vendor Advisories

3
Microsoft
A flaw was found in the Linux kernel implementation of proxied virtualized TPM devices. On a system where virtualized TPM devices are configured (this is not the default) a local attacker can create a↗2022-09-13
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Red Hat
kernel: use-after-free Read in put_device (/dev/vtpmx)↗2022-03-12
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Debian
CVE-2022-2977: linux - A flaw was found in the Linux kernel implementation of proxied virtualized TPM d...↗2022
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CVE-2022-2977 — Use After Free in Linux Kernel | cvebase