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Vulnerability · Published May 1, 2025 · Assigned by Linux

CVE-2022-49931IB/hfi1: Correctly move list in sc_disable()

High 8.8

In plain English

A high-severity null pointer dereference 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 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.2%top 84.4% 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: IB/hfi1: Correctly move list in sc_disable() Commit 13bac861952a ("IB/hfi1: Fix abba locking issue with sc_disable()") incorrectly tries to move a list from one list head to another. The result is a kernel crash. The crash is triggered when a link goes down and there are waiters for a send to complete. The following signature is seen: BUG: kernel NULL pointer dereference, address: 0000000000000030 [...] Call Trace: sc_disable+0x1ba/0x240 [hfi1] pio_freeze+0x3d/0x60 [hfi1] handle_freeze+0x27/0x1b0 [hfi1] process_one_work+0x1b0/0x380 ? process_one_work+0x380/0x380 worker_thread+0x30/0x360 ? process_one_work+0x380/0x380 kthread+0xd7/0x100 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x1f/0x30 The fix is to use the correct call to move the list.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.0.8-1DEBIAN-CVE-2022-49931
Debian:13linux6.0.8-1DEBIAN-CVE-2022-49931
Debian:14linux6.0.8-1DEBIAN-CVE-2022-49931
Ubuntu:22.04:LTSlinux5.15.0-60.66UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-aws5.15.0-1030.34UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-azure5.15.0-1033.40UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1033.40.1UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-gcp5.15.0-1029.36UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-gke5.15.0-1027.32UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1015.19UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-ibm5.15.0-1025.28UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1025.30UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-kvm5.15.0-1028.33UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-60.66UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1017.17UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-oracle5.15.0-1029.35UBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-raspi5.15.0-1024.26UBUNTU-CVE-2022-49931
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49931
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-49931
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-49931

Affected products (as reported)

VendorProductVersions
Linux Linux d997d4e4365f7e59cf6b59c70f966c56d704b64f – before 25760a41e3802f54aadcc31385543665ab349b8ed98883f6c33e0d960afedcecaa92fc2b61fec383 – before 7c4260f8f188df32414a5ecad63e8b934c2aa3f013bac861952a78664907a0f927d3e874e9a59034 – before ba95409d6b580501ff6d78efd00064f7df66992613bac861952a78664907a0f927d3e874e9a59034 – before b8bcff99b07cc175a6ee12a52db51cdd2229586c13bac861952a78664907a0f927d3e874e9a59034 – before 1afac08b39d85437187bb2a92d89a741b1078f555d33bd6b4d4d035e42733592899918a18f2540da5.4.157 – before 5.4.2245.10.77 – before 5.10.154
Linux Linux 5.15

Weakness: CWE-476 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References