In the Linux kernel, the following vulnerability has been resolved:
tipc: wait and exit until all work queues are done
On some host, a crash could be triggered simply by repeating these commands several times:
# modprobe tipc # tipc bearer enable media udp name UDP1 localip 127.0.0.1 # rmmod tipc
[] BUG: unable to handle kernel paging request at ffffffffc096bb00 [] Workqueue: events 0xffffffffc096bb00 [] Call Trace: [] ? process_one_work+0x1a7/0x360 [] ? worker_thread+0x30/0x390 [] ? create_worker+0x1a0/0x1a0 [] ? kthread+0x116/0x130 [] ? kthread_flush_work_fn+0x10/0x10 [] ? ret_from_fork+0x35/0x40
When removing the TIPC module, the UDP tunnel sock will be delayed to release in a work queue as sock_release() can't be done in rtnl_lock(). If the work queue is schedule to run after the TIPC module is removed, kernel will crash as the work queue function cleanup_beareri() code no longer exists when trying to invoke it.
To fix it, this patch introduce a member wq_count in tipc_net to track the numbers of work queues in schedule, and wait and exit until all work queues are done in tipc_exit_net().
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade python-perfUpgrade perfUpgrade bpftool-debuginfoUpgrade kernel-develUpgrade kernel-toolsUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-livepatch-4.14.355-274.598Upgrade kernel-tools-develUpgrade kernel-headersUpgrade kernel-debuginfo | Aug 28, 2024 | Mar 25, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Mar 25, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade python3-perf | Jul 16, 2024 | Mar 25, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade kernel-tools-libsUpgrade python3-perfUpgrade kernelUpgrade kernel-tools | Jul 17, 2024 | Mar 25, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 25, 2024 |
| Ubuntu | — | Upgrade linux-image-lowlatencyUpgrade linux-image-gcpUpgrade linux-image-4.15.0-1142-oracleUpgrade linux-image-generic-lts-xenialUpgrade linux-image-azure-lts-18.04Upgrade linux-image-generic-hwe-16.04Upgrade linux-image-lowlatency-lts-xenialUpgrade linux-image-4.15.0-237-genericUpgrade linux-image-4.15.0-1173-gcpUpgrade linux-image-genericUpgrade linux-image-4.4.0-1143-awsUpgrade linux-image-virtual-hwe-16.04Upgrade linux-image-virtualUpgrade linux-image-azure-fipsUpgrade linux-image-4.15.0-2097-azure-fipsUpgrade linux-image-4.15.0-2081-gcp-fipsUpgrade linux-image-gcp-lts-18.04Upgrade linux-image-4.4.0-1181-awsUpgrade linux-image-4.15.0-2118-aws-fipsUpgrade linux-image-4.15.0-237-lowlatencyUpgrade linux-image-4.4.0-268-lowlatencyUpgrade linux-image-oracleUpgrade linux-image-4.4.0-268-genericUpgrade linux-image-kvmUpgrade linux-image-fipsUpgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-4.15.0-1180-awsUpgrade linux-image-virtual-lts-xenialUpgrade linux-image-4.4.0-1144-kvmUpgrade linux-image-aws-lts-18.04Upgrade linux-image-4.15.0-1188-azureUpgrade linux-image-gkeUpgrade linux-image-4.15.0-1135-fipsUpgrade linux-image-4.15.0-1163-kvmUpgrade linux-image-azureUpgrade linux-image-aws-fipsUpgrade linux-image-oemUpgrade linux-image-aws-hweUpgrade linux-image-awsUpgrade linux-image-gcp-fipsUpgrade linux-image-4.4.0-1113-fipsUpgrade linux-image-oracle-lts-18.04 | Nov 19, 2024 | Mar 25, 2024 |
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