In the Linux kernel, the following vulnerability has been resolved:
scsi: core: sysfs: Fix hang when device state is set via sysfs
This fixes a regression added with:
commit f0f82e2476f6 ("scsi: core: Fix capacity set to zero after offlinining device")
The problem is that after iSCSI recovery, iscsid will call into the kernel to set the dev's state to running, and with that patch we now call scsi_rescan_device() with the state_mutex held. If the SCSI error handler thread is just starting to test the device in scsi_send_eh_cmnd() then it's going to try to grab the state_mutex.
We are then stuck, because when scsi_rescan_device() tries to send its I/O scsi_queue_rq() calls -> scsi_host_queue_ready() -> scsi_host_in_recovery() which will return true (the host state is still in recovery) and I/O will just be requeued. scsi_send_eh_cmnd() will then never be able to grab the state_mutex to finish error handling.
To prevent the deadlock move the rescan-related code to after we drop the state_mutex.
This also adds a check for if we are already in the running state. This prevents extra scans and helps the iscsid case where if the transport class has already onlined the device during its recovery process then we don't need userspace to do it again plus possibly block that daemon.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-tools-develUpgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade kernel-toolsUpgrade perfUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernelUpgrade bpftool-debuginfoUpgrade kernel-develUpgrade kernel-livepatch-5.10.82-83.359Upgrade bpftoolUpgrade python-perfUpgrade kernel-debuginfo-common-x86_64 | Aug 28, 2024 | Apr 10, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Apr 10, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Apr 10, 2024 |
| Suse | — | Upgrade kernel-default-livepatchUpgrade kernel-obs-qaUpgrade reiserfs-kmp-64kbUpgrade dtb-hisiliconUpgrade kernel-azure-extraUpgrade kselftests-kmp-64kbUpgrade kernel-rt_debugUpgrade kernel-preempt-develUpgrade dtb-lgUpgrade kernel-zfcpdumpUpgrade kernel-azure-optionalUpgrade kernel-64kb-optionalUpgrade kernel-default-baseUpgrade dtb-freescaleUpgrade kernel-symsUpgrade kernel-64kb-livepatch-develUpgrade kernel-rt_debug-vdsoUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-rt-vdsoUpgrade kernel-rt-livepatch-develUpgrade kernel-syms-rtUpgrade gfs2-kmp-rtUpgrade gfs2-kmp-azureUpgrade dtb-renesasUpgrade dlm-kmp-defaultUpgrade kernel-64kbUpgrade kernel-source-azureUpgrade dlm-kmp-64kbUpgrade dtb-apmUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-64kb-develUpgrade kernel-kvmsmall-vdsoUpgrade cluster-md-kmp-azureUpgrade dtb-amdUpgrade ocfs2-kmp-rtUpgrade reiserfs-kmp-rtUpgrade kernel-source-rtUpgrade dtb-socionextUpgrade kernel-default-develUpgrade kernel-debugUpgrade dtb-alteraUpgrade kernel-rt-optionalUpgrade kernel-docs-htmlUpgrade dtb-marvellUpgrade gfs2-kmp-64kbUpgrade kernel-debug-develUpgrade kernel-macrosUpgrade dtb-appleUpgrade ocfs2-kmp-azureUpgrade dtb-amazonUpgrade kernel-source-vanillaUpgrade kernel-rt_debug-develUpgrade dtb-broadcomUpgrade reiserfs-kmp-defaultUpgrade kernel-azure-vdsoUpgrade kselftests-kmp-azureUpgrade kernel-default-livepatch-develUpgrade ocfs2-kmp-64kbUpgrade kernel-kvmsmall-develUpgrade kernel-default-extraUpgrade dtb-caviumUpgrade kernel-debug-livepatch-develUpgrade cluster-md-kmp-defaultUpgrade dtb-sprdUpgrade kernel-rt-livepatchUpgrade kernel-kvmsmallUpgrade kernel-default-optionalUpgrade reiserfs-kmp-azureUpgrade kselftests-kmp-defaultUpgrade kselftests-kmp-rtUpgrade dlm-kmp-azureUpgrade kernel-rtUpgrade kernel-preemptUpgrade kernel-obs-buildUpgrade dtb-exynosUpgrade dlm-kmp-rtUpgrade gfs2-kmp-defaultUpgrade kernel-docsUpgrade kernel-azureUpgrade dtb-xilinxUpgrade kernel-devel-azureUpgrade kernel-debug-vdsoUpgrade kernel-devel-rtUpgrade kernel-64kb-extraUpgrade kernel-default-vdsoUpgrade ocfs2-kmp-defaultUpgrade kernel-defaultUpgrade cluster-md-kmp-64kbUpgrade dtb-allwinnerUpgrade dtb-mediatekUpgrade kernel-sourceUpgrade kernel-azure-develUpgrade kernel-rt-develUpgrade kernel-default-base-rebuildUpgrade dtb-qcomUpgrade kernel-rt-extraUpgrade dtb-rockchipUpgrade dtb-amlogicUpgrade kernel-develUpgrade kernel-azure-livepatch-develUpgrade kernel-syms-azureUpgrade dtb-nvidiaUpgrade dtb-armUpgrade cluster-md-kmp-rt | Aug 9, 2024 | Apr 10, 2024 |
| Ubuntu | — | Upgrade linux-awsUpgrade linux-oracleUpgrade linux-kvmUpgrade linux-raspi-5.4Upgrade linux-bluefieldUpgrade linux-gcpUpgrade linux-fipsUpgrade linux-aws-5.4Upgrade linux-ibmUpgrade linux-azureUpgrade linux-hwe-5.4Upgrade linuxUpgrade linux-azure-5.4Upgrade linux-ibm-5.4Upgrade linux-gcp-5.4Upgrade linux-oracle-5.4Upgrade linux-raspiUpgrade linux-gkeop | Nov 19, 2024 | Apr 10, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Apr 10, 2024 |
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