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 perf-debuginfoUpgrade kernel-toolsUpgrade kernel-headersUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade python-perf-debuginfoUpgrade kernel-tools-develUpgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernelUpgrade kernel-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernel-livepatch-5.10.82-83.359Upgrade python-perf | 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 dtb-allwinnerUpgrade dtb-sprdUpgrade dtb-xilinxUpgrade kernel-debug-vdsoUpgrade ocfs2-kmp-defaultUpgrade cluster-md-kmp-defaultUpgrade kernel-develUpgrade kernel-rt-extraUpgrade kernel-default-vdsoUpgrade kselftests-kmp-rtUpgrade reiserfs-kmp-azureUpgrade kernel-defaultUpgrade kselftests-kmp-defaultUpgrade kernel-syms-azureUpgrade cluster-md-kmp-rtUpgrade dlm-kmp-azureUpgrade kernel-64kb-extraUpgrade dtb-nvidiaUpgrade kernel-rtUpgrade kernel-default-optionalUpgrade dtb-amlogicUpgrade dtb-qcomUpgrade kernel-preemptUpgrade dtb-exynosUpgrade dlm-kmp-rtUpgrade kernel-azure-livepatch-develUpgrade kernel-docsUpgrade kernel-kvmsmallUpgrade dtb-armUpgrade dtb-rockchipUpgrade kernel-devel-azureUpgrade kernel-azureUpgrade kernel-rt-livepatchUpgrade kernel-obs-buildUpgrade dtb-mediatekUpgrade kernel-devel-rtUpgrade cluster-md-kmp-64kbUpgrade gfs2-kmp-defaultUpgrade kernel-sourceUpgrade kernel-default-base-rebuildUpgrade kernel-rt-develUpgrade kernel-azure-develUpgrade kernel-azure-vdsoUpgrade dtb-socionextUpgrade ocfs2-kmp-64kbUpgrade gfs2-kmp-64kbUpgrade dtb-marvellUpgrade dtb-freescaleUpgrade kernel-docs-htmlUpgrade dtb-amazonUpgrade dtb-amdUpgrade cluster-md-kmp-azureUpgrade dtb-alteraUpgrade kernel-rt-optionalUpgrade kernel-rt-livepatch-develUpgrade kernel-64kb-develUpgrade kernel-azure-optionalUpgrade kernel-source-rtUpgrade kselftests-kmp-64kbUpgrade dlm-kmp-64kbUpgrade reiserfs-kmp-64kbUpgrade kernel-preempt-develUpgrade kernel-default-livepatchUpgrade dtb-renesasUpgrade kernel-obs-qaUpgrade kernel-azure-extraUpgrade kernel-64kbUpgrade kernel-kvmsmall-vdsoUpgrade kernel-default-baseUpgrade kselftests-kmp-azureUpgrade kernel-kvmsmall-develUpgrade gfs2-kmp-rtUpgrade reiserfs-kmp-rtUpgrade dlm-kmp-defaultUpgrade kernel-rt-vdsoUpgrade kernel-default-develUpgrade kernel-debugUpgrade dtb-appleUpgrade kernel-source-vanillaUpgrade kernel-macrosUpgrade kernel-default-livepatch-develUpgrade kernel-64kb-livepatch-develUpgrade kernel-debug-develUpgrade ocfs2-kmp-azureUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-rt_debug-develUpgrade dtb-caviumUpgrade kernel-debug-livepatch-develUpgrade kernel-syms-rtUpgrade gfs2-kmp-azureUpgrade kernel-rt_debugUpgrade dtb-broadcomUpgrade kernel-source-azureUpgrade kernel-64kb-optionalUpgrade dtb-lgUpgrade dtb-hisiliconUpgrade kernel-zfcpdumpUpgrade kernel-symsUpgrade kernel-rt_debug-vdsoUpgrade reiserfs-kmp-defaultUpgrade kernel-default-extraUpgrade dtb-apmUpgrade kernel-kvmsmall-livepatch-develUpgrade ocfs2-kmp-rt | Aug 9, 2024 | Apr 10, 2024 |
| Ubuntu | — | Upgrade linux-raspi-5.4Upgrade linux-oracleUpgrade linux-kvmUpgrade linux-bluefieldUpgrade linux-awsUpgrade linux-gcpUpgrade linux-fipsUpgrade linux-azureUpgrade linux-oracle-5.4Upgrade linux-aws-5.4Upgrade linux-raspiUpgrade linux-azure-5.4Upgrade linux-gkeopUpgrade linux-ibmUpgrade linux-gcp-5.4Upgrade linux-ibm-5.4Upgrade linuxUpgrade linux-hwe-5.4 | 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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