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Vulnerability · Published Jul 16, 2024 · Assigned by Linux

CVE-2022-48786vsock: remove vsock from connected table when connect is interrupted by a signal

High 7.8

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.3%top 83.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: vsock: remove vsock from connected table when connect is interrupted by a signal vsock_connect() expects that the socket could already be in the TCP_ESTABLISHED state when the connecting task wakes up with a signal pending. If this happens the socket will be in the connected table, and it is not removed when the socket state is reset. In this situation it's common for the process to retry connect(), and if the connection is successful the socket will be added to the connected table a second time, corrupting the list. Prevent this by calling vsock_remove_connected() if a signal is received while waiting for a connection. This is harmless if the socket is not in the connected table, and if it is in the table then removing it will prevent list corruption from a double add. Note for backporting: this patch requires d5afa82c977e ("vsock: correct removal of socket from the list"), which is in all current stable trees except 4.9.y.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.16.11-1DEBIAN-CVE-2022-48786
Debian:13linux5.16.11-1DEBIAN-CVE-2022-48786
Debian:14linux5.16.11-1DEBIAN-CVE-2022-48786
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-48786
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-48786
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-48786

Affected products (as reported)

VendorProductVersions
Linux Linux d021c344051af91f42c5ba9fdedc176740cbd238 – before 0bb88f3f7e8d506f3efe46d694964117e20efbfcd021c344051af91f42c5ba9fdedc176740cbd238 – before e3b3939fd137aab6d00d54bee0ee9244b286a608d021c344051af91f42c5ba9fdedc176740cbd238 – before 2910bcb9f67551a45397735e47b6d456eb8cd549d021c344051af91f42c5ba9fdedc176740cbd238 – before 5f326fe2aef411a6575628f92bd861463ea91df7d021c344051af91f42c5ba9fdedc176740cbd238 – before 87cd1bbd6677411e17369cd4b7389ab1e1fdba44d021c344051af91f42c5ba9fdedc176740cbd238 – before 787468ee7a435777521d33399d012fd591ae2f94d021c344051af91f42c5ba9fdedc176740cbd238 – before addd62a8cb6fa90aa322365c62487da61f6baab8d021c344051af91f42c5ba9fdedc176740cbd238 – before b9208492fcaecff8f43915529ae34b3bcb03877c
Linux Linux 3.9

References