In the Linux kernel, the following vulnerability has been resolved:
serial: imx: fix tx statemachine deadlock
When using the serial port as RS485 port, the tx statemachine is used to control the RTS pin to drive the RS485 transceiver TX_EN pin. When the TTY port is closed in the middle of a transmission (for instance during userland application crash), imx_uart_shutdown disables the interface and disables the Transmission Complete interrupt. afer that, imx_uart_stop_tx bails on an incomplete transmission, to be retriggered by the TC interrupt. This interrupt is disabled and therefore the tx statemachine never transitions out of SEND. The statemachine is in deadlock now, and the TX_EN remains low, making the interface useless.
imx_uart_stop_tx now checks for incomplete transmission AND whether TC interrupts are enabled before bailing to be retriggered. This makes sure the state machine handling is reached, and is properly set to WAIT_AFTER_SEND.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jun 27, 2024 | Feb 23, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 23, 2024 |
| Suse | — | Upgrade ocfs2-kmp-azureUpgrade dtb-armUpgrade dtb-renesasUpgrade dtb-appleUpgrade kernel-64kb-extraUpgrade dlm-kmp-defaultUpgrade kernel-debug-develUpgrade kernel-debug-livepatch-develUpgrade dtb-marvellUpgrade kernel-rt_debug-vdsoUpgrade reiserfs-kmp-defaultUpgrade dtb-hisiliconUpgrade kernel-default-livepatch-develUpgrade kernel-docsUpgrade kernel-kvmsmall-vdsoUpgrade reiserfs-kmp-rtUpgrade kernel-rt_debugUpgrade kernel-azure-vdsoUpgrade kernel-rt_debug-livepatch-develUpgrade reiserfs-kmp-azureUpgrade kernel-source-vanillaUpgrade dtb-mediatekUpgrade kernel-rt-extraUpgrade kernel-rt-vdsoUpgrade kernel-defaultUpgrade dtb-nvidiaUpgrade dtb-sprdUpgrade dlm-kmp-azureUpgrade cluster-md-kmp-defaultUpgrade kernel-azureUpgrade kernel-rt-livepatch-develUpgrade kernel-obs-buildUpgrade kselftests-kmp-defaultUpgrade dtb-rockchipUpgrade cluster-md-kmp-64kbUpgrade gfs2-kmp-defaultUpgrade kernel-debug-vdsoUpgrade kernel-devel-rtUpgrade dtb-allwinnerUpgrade kselftests-kmp-rtUpgrade dlm-kmp-rtUpgrade dtb-socionextUpgrade kernel-default-baseUpgrade kernel-syms-rtUpgrade dtb-amdUpgrade kernel-debugUpgrade kernel-default-base-rebuildUpgrade kselftests-kmp-azureUpgrade kernel-source-azureUpgrade dtb-caviumUpgrade cluster-md-kmp-rtUpgrade dtb-amazonUpgrade gfs2-kmp-64kbUpgrade kernel-azure-livepatch-develUpgrade kernel-kvmsmall-develUpgrade kernel-develUpgrade kernel-docs-htmlUpgrade kernel-syms-azureUpgrade kernel-azure-develUpgrade dtb-freescaleUpgrade dtb-lgUpgrade kernel-devel-azureUpgrade kernel-zfcpdumpUpgrade kernel-default-optionalUpgrade kernel-default-livepatchUpgrade kernel-64kb-optionalUpgrade dlm-kmp-64kbUpgrade kernel-64kbUpgrade kernel-rt_debug-develUpgrade kernel-azure-extraUpgrade dtb-xilinxUpgrade dtb-alteraUpgrade dtb-apmUpgrade kernel-rtUpgrade kernel-source-rtUpgrade kselftests-kmp-64kbUpgrade kernel-rt-develUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-azure-optionalUpgrade gfs2-kmp-rtUpgrade dtb-broadcomUpgrade kernel-default-extraUpgrade ocfs2-kmp-64kbUpgrade kernel-default-vdsoUpgrade kernel-rt-optionalUpgrade kernel-kvmsmallUpgrade kernel-64kb-livepatch-develUpgrade kernel-64kb-develUpgrade dtb-qcomUpgrade dtb-amlogicUpgrade reiserfs-kmp-64kbUpgrade ocfs2-kmp-rtUpgrade cluster-md-kmp-azureUpgrade kernel-symsUpgrade gfs2-kmp-azureUpgrade dtb-exynosUpgrade kernel-obs-qaUpgrade kernel-macrosUpgrade kernel-rt-livepatchUpgrade ocfs2-kmp-defaultUpgrade kernel-sourceUpgrade kernel-default-devel | Mar 13, 2024 | Feb 23, 2024 |
| Ubuntu | — | Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-laptop-23.10Upgrade linux-image-5.15.0-1060-azure-fdeUpgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1048-nvidia-lowlatencyUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-6.5.0-41-generic-64kUpgrade linux-image-gkeUpgrade linux-image-5.15.0-102-lowlatency-64kUpgrade linux-image-5.15.0-102-lowlatencyUpgrade linux-image-5.15.0-1050-raspiUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-virtualUpgrade linux-image-6.5.0-1024-oemUpgrade linux-image-5.15.0-1060-azureUpgrade linux-image-genericUpgrade linux-image-6.5.0-41-lowlatency-64kUpgrade linux-image-6.5.0-41-lowlatencyUpgrade linux-image-gkeop-5.15Upgrade linux-image-6.5.0-1021-nvidiaUpgrade linux-image-5.15.0-1055-gcpUpgrade linux-image-6.5.0-1022-gcpUpgrade linux-image-awsUpgrade linux-image-azure-cvmUpgrade linux-image-5.15.0-102-generic-64kUpgrade linux-image-oem-20.04Upgrade linux-image-gkeopUpgrade linux-image-oem-22.04dUpgrade linux-image-5.15.0-1054-gkeUpgrade linux-image-intelUpgrade linux-image-nvidia-64k-6.5Upgrade linux-image-5.15.0-1055-oracleUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-5.15.0-1054-kvmUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-5.15.0-1052-intel-iotgUpgrade linux-image-5.15.0-102-genericUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-oracleUpgrade linux-image-6.5.0-1022-azureUpgrade linux-image-5.15.0-1050-ibmUpgrade linux-image-azure-fdeUpgrade linux-image-kvmUpgrade linux-image-5.15.0-1040-gkeopUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-oem-22.04cUpgrade linux-image-6.5.0-1015-starfiveUpgrade linux-image-lowlatency-64kUpgrade linux-image-oem-22.04aUpgrade linux-image-nvidia-6.5Upgrade linux-image-raspi-nolpaeUpgrade linux-image-6.5.0-1024-oracleUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-5.15.0-1048-nvidiaUpgrade linux-image-oem-22.04bUpgrade linux-image-5.15.0-102-generic-lpaeUpgrade linux-image-generic-64kUpgrade linux-image-azureUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-generic-lpaeUpgrade linux-image-6.5.0-1018-raspiUpgrade linux-image-6.5.0-1021-awsUpgrade linux-image-6.5.0-1021-nvidia-64kUpgrade linux-image-oem-20.04dUpgrade linux-image-oem-22.04Upgrade linux-image-6.1.0-1035-oemUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-starfiveUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-5.15.0-1057-awsUpgrade linux-image-azure-lts-22.04Upgrade linux-image-oem-20.04bUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.5.0-1017-laptopUpgrade linux-image-6.5.0-1024-oracle-64kUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-oem-20.04cUpgrade linux-image-raspiUpgrade linux-image-gke-5.15Upgrade linux-image-6.5.0-41-genericUpgrade linux-image-ibmUpgrade linux-image-6.5.0-1022-azure-fdeUpgrade linux-image-nvidiaUpgrade linux-image-aws-lts-22.04Upgrade linux-image-lowlatency | Mar 12, 2024 | Feb 23, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Feb 23, 2024 |
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