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 kernel-rt-livepatch-develUpgrade dtb-appleUpgrade kernel-debug-livepatch-develUpgrade cluster-md-kmp-defaultUpgrade kernel-azureUpgrade reiserfs-kmp-azureUpgrade kernel-rt_debugUpgrade kernel-defaultUpgrade dtb-hisiliconUpgrade kernel-debug-develUpgrade kernel-syms-rtUpgrade kernel-64kb-extraUpgrade kernel-rt_debug-vdsoUpgrade kernel-default-baseUpgrade kernel-kvmsmall-vdsoUpgrade dtb-mediatekUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-debugUpgrade reiserfs-kmp-defaultUpgrade dtb-marvellUpgrade kernel-source-vanillaUpgrade kernel-obs-buildUpgrade kselftests-kmp-defaultUpgrade kernel-rt-vdsoUpgrade dtb-allwinnerUpgrade gfs2-kmp-defaultUpgrade dtb-nvidiaUpgrade dtb-amdUpgrade kernel-azure-vdsoUpgrade ocfs2-kmp-azureUpgrade dtb-armUpgrade kernel-devel-rtUpgrade kselftests-kmp-rtUpgrade dlm-kmp-defaultUpgrade dtb-socionextUpgrade dtb-rockchipUpgrade dtb-renesasUpgrade kernel-debug-vdsoUpgrade cluster-md-kmp-64kbUpgrade kernel-default-livepatch-develUpgrade dtb-sprdUpgrade kernel-rt-extraUpgrade reiserfs-kmp-rtUpgrade kernel-docsUpgrade dlm-kmp-azureUpgrade dlm-kmp-rtUpgrade kernel-devel-azureUpgrade kernel-zfcpdumpUpgrade kselftests-kmp-azureUpgrade kernel-default-optionalUpgrade gfs2-kmp-64kbUpgrade cluster-md-kmp-rtUpgrade dtb-freescaleUpgrade kernel-azure-optionalUpgrade gfs2-kmp-rtUpgrade dtb-apmUpgrade kselftests-kmp-64kbUpgrade kernel-rt-develUpgrade kernel-rtUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-azure-develUpgrade kernel-syms-azureUpgrade kernel-source-rtUpgrade kernel-azure-extraUpgrade kernel-default-extraUpgrade dtb-alteraUpgrade kernel-symsUpgrade reiserfs-kmp-64kbUpgrade kernel-default-develUpgrade kernel-macrosUpgrade kernel-64kb-livepatch-develUpgrade kernel-obs-qaUpgrade kernel-rt-optionalUpgrade dtb-qcomUpgrade ocfs2-kmp-defaultUpgrade kernel-sourceUpgrade kernel-kvmsmallUpgrade kernel-develUpgrade kernel-64kb-develUpgrade dtb-amlogicUpgrade kernel-rt_debug-develUpgrade kernel-64kbUpgrade kernel-rt-livepatchUpgrade ocfs2-kmp-64kbUpgrade kernel-default-vdsoUpgrade ocfs2-kmp-rtUpgrade gfs2-kmp-azureUpgrade dtb-exynosUpgrade cluster-md-kmp-azureUpgrade dtb-xilinxUpgrade dtb-broadcomUpgrade kernel-64kb-optionalUpgrade kernel-docs-htmlUpgrade kernel-default-livepatchUpgrade dtb-lgUpgrade dlm-kmp-64kbUpgrade kernel-kvmsmall-develUpgrade kernel-default-base-rebuildUpgrade kernel-azure-livepatch-develUpgrade dtb-caviumUpgrade dtb-amazonUpgrade kernel-source-azure | Mar 13, 2024 | Feb 23, 2024 |
| Ubuntu | — | Upgrade linux-image-genericUpgrade linux-image-5.15.0-1055-gcpUpgrade linux-image-5.15.0-1054-kvmUpgrade linux-image-gkeopUpgrade linux-image-6.5.0-41-lowlatency-64kUpgrade linux-image-6.5.0-41-lowlatencyUpgrade linux-image-gkeUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-oracleUpgrade linux-image-nvidia-64k-6.5Upgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1060-azureUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.5.0-1024-oemUpgrade linux-image-5.15.0-1055-oracleUpgrade linux-image-5.15.0-1048-nvidia-lowlatencyUpgrade linux-image-5.15.0-102-lowlatencyUpgrade linux-image-5.15.0-1052-intel-iotgUpgrade linux-image-awsUpgrade linux-image-5.15.0-1054-gkeUpgrade linux-image-5.15.0-102-generic-64kUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-azure-cvmUpgrade linux-image-oem-20.04Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-oracle-64kUpgrade linux-image-intelUpgrade linux-image-laptop-23.10Upgrade linux-image-oem-22.04dUpgrade linux-image-virtualUpgrade linux-image-5.15.0-1050-ibmUpgrade linux-image-5.15.0-1060-azure-fdeUpgrade linux-image-gkeop-5.15Upgrade linux-image-5.15.0-102-genericUpgrade linux-image-5.15.0-1050-raspiUpgrade linux-image-6.5.0-1022-gcpUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-gcpUpgrade linux-image-6.5.0-1022-azureUpgrade linux-image-6.5.0-1021-nvidiaUpgrade linux-image-6.5.0-41-generic-64kUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-5.15.0-102-lowlatency-64kUpgrade linux-image-oem-22.04aUpgrade linux-image-oem-20.04dUpgrade linux-image-6.5.0-1015-starfiveUpgrade linux-image-6.5.0-1022-azure-fdeUpgrade linux-image-ibmUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-azure-fdeUpgrade linux-image-azureUpgrade linux-image-azure-lts-22.04Upgrade linux-image-6.5.0-1021-awsUpgrade linux-image-oem-22.04Upgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-6.5.0-1018-raspiUpgrade linux-image-nvidia-6.5Upgrade linux-image-raspi-nolpaeUpgrade linux-image-6.5.0-1024-oracleUpgrade linux-image-5.15.0-102-generic-lpaeUpgrade linux-image-6.5.0-1017-laptopUpgrade linux-image-lowlatencyUpgrade linux-image-5.15.0-1048-nvidiaUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-6.5.0-1024-oracle-64kUpgrade linux-image-oem-20.04cUpgrade linux-image-oem-22.04bUpgrade linux-image-generic-64kUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-starfiveUpgrade linux-image-nvidiaUpgrade linux-image-6.5.0-41-genericUpgrade linux-image-5.15.0-1040-gkeopUpgrade linux-image-raspiUpgrade linux-image-generic-lpaeUpgrade linux-image-6.5.0-1021-nvidia-64kUpgrade linux-image-aws-lts-22.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-oem-22.04cUpgrade linux-image-gke-5.15Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.1.0-1035-oemUpgrade linux-image-kvmUpgrade linux-image-oem-20.04bUpgrade linux-image-5.15.0-1057-aws | 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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