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