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In the Linux kernel, the following vulnerability has been resolved:
gpio: pca953x: fix pca953x_irq_bus_sync_unlock race
Ensure that `i2c_lock' is held when setting interrupt latch and mask in pca953x_irq_bus_sync_unlock() in order to avoid races.
The other (non-probe) call site pca953x_gpio_set_multiple() ensures the lock is held before calling pca953x_write_regs().
The problem occurred when a request raced against irq_bus_sync_unlock() approximately once per thousand reboots on an i.MX8MP based system.
* Normal case
0-0022: write register AI|3a {03,02,00,00,01} Input latch P0 0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0 0-0022: write register AI|08 {ff,00,00,00,00} Output P3 0-0022: write register AI|12 {fc,00,00,00,00} Config P3
* Race case
0-0022: write register AI|08 {ff,00,00,00,00} Output P3 0-0022: write register AI|08 {03,02,00,00,01} *** Wrong register *** 0-0022: write register AI|12 {fc,00,00,00,00} Config P3 0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Sep 2, 2024 | Aug 8, 2024 |
| Redhat_linux | — | Upgrade kernel-rtNo solution existsUpgrade kernel | May 15, 2025 | Aug 8, 2024 |
| Suse | — | Upgrade dtb-caviumUpgrade dtb-hisiliconUpgrade dtb-xilinxUpgrade dtb-amdUpgrade kernel-rt_debugUpgrade kernel-source-rtUpgrade kernel-default-baseUpgrade kselftests-kmp-azureUpgrade kernel-debugUpgrade kernel-defaultUpgrade dlm-kmp-rtUpgrade kernel-debug-vdsoUpgrade dtb-mediatekUpgrade kselftests-kmp-defaultUpgrade kernel-obs-buildUpgrade dtb-socionextUpgrade kernel-64kb-develUpgrade kernel-docsUpgrade gfs2-kmp-azureUpgrade reiserfs-kmp-azureUpgrade kernel-rt_debug-livepatch-develUpgrade kselftests-kmp-rtUpgrade kernel-source-vanillaUpgrade dlm-kmp-defaultUpgrade dtb-armUpgrade dtb-appleUpgrade dtb-renesasUpgrade dtb-rockchipUpgrade gfs2-kmp-defaultUpgrade kernel-develUpgrade kernel-debug-develUpgrade dtb-allwinnerUpgrade kernel-azureUpgrade reiserfs-kmp-defaultUpgrade cluster-md-kmp-64kbUpgrade kernel-rt-optionalUpgrade dtb-marvellUpgrade kernel-rt-vdsoUpgrade dtb-nvidiaUpgrade ocfs2-kmp-defaultUpgrade kernel-rt-extraUpgrade reiserfs-kmp-rtUpgrade kernel-default-livepatch-develUpgrade dlm-kmp-azureUpgrade kernel-64kb-extraUpgrade dtb-sprdUpgrade ocfs2-kmp-azureUpgrade kernel-default-optionalUpgrade kselftests-kmp-64kbUpgrade kernel-zfcpdumpUpgrade kernel-kvmsmallUpgrade kernel-rt-livepatchUpgrade dtb-qcomUpgrade kernel-docs-htmlUpgrade kernel-default-manUpgrade kernel-azure-develUpgrade kernel-kvmsmall-develUpgrade dtb-alteraUpgrade kernel-kvmsmall-livepatch-develUpgrade gfs2-kmp-64kbUpgrade kernel-rt-develUpgrade kernel-sourceUpgrade dtb-amazonUpgrade kernel-default-develUpgrade dtb-amlogicUpgrade dlm-kmp-64kbUpgrade kernel-devel-azureUpgrade dtb-apmUpgrade kernel-syms-rtUpgrade kernel-default-livepatchUpgrade kernel-azure-vdsoUpgrade kernel-devel-rtUpgrade kernel-syms-azureUpgrade kernel-default-base-rebuildUpgrade kernel-64kb-optionalUpgrade kernel-64kbUpgrade reiserfs-kmp-64kbUpgrade dtb-exynosUpgrade kernel-azure-extraUpgrade kernel-azure-livepatch-develUpgrade ocfs2-kmp-64kbUpgrade kernel-symsUpgrade kernel-debug-livepatch-develUpgrade kernel-source-azureUpgrade kernel-azure-optionalUpgrade kernel-default-extraUpgrade kernel-default-vdsoUpgrade kernel-rtUpgrade kernel-obs-qaUpgrade kernel-macrosUpgrade kernel-kvmsmall-vdsoUpgrade kernel-64kb-livepatch-develUpgrade gfs2-kmp-rtUpgrade dtb-freescaleUpgrade dtb-broadcomUpgrade cluster-md-kmp-rtUpgrade cluster-md-kmp-defaultUpgrade kernel-rt-livepatch-develUpgrade dtb-lgUpgrade cluster-md-kmp-azureUpgrade kernel-rt_debug-develUpgrade ocfs2-kmp-rtUpgrade kernel-rt_debug-vdso | Dec 5, 2025 | Jun 3, 2025 |
| Ubuntu | — | Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-azure-fdeUpgrade linux-image-nvidia-64kUpgrade linux-image-6.8.0-1017-azureUpgrade linux-image-oem-24.04aUpgrade linux-image-6.8.0-1017-nvidia-64kUpgrade linux-image-6.8.0-1017-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-48-lowlatency-64kUpgrade linux-image-6.8.0-1018-awsUpgrade linux-image-6.8.0-1017-azure-fdeUpgrade linux-image-6.8.0-1014-raspiUpgrade linux-image-6.8.0-1016-oemUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-1014-ibmUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-48-genericUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1016-azure-fdeUpgrade linux-image-virtualUpgrade linux-image-6.8.0-1015-oracle-64kUpgrade linux-image-awsUpgrade linux-image-kvmUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.8.0-1017-gcpUpgrade linux-image-6.8.0-1017-nvidia-lowlatencyUpgrade linux-image-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-oracleUpgrade linux-image-6.8.0-1016-azureUpgrade linux-image-oem-22.04dUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-gkeopUpgrade linux-image-generic-64kUpgrade linux-image-azureUpgrade linux-image-gkeUpgrade linux-image-6.8.0-1002-gkeopUpgrade linux-image-6.8.0-1013-gkeUpgrade linux-image-lowlatencyUpgrade linux-image-oem-24.04Upgrade linux-image-6.8.0-48-generic-64kUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1017-nvidiaUpgrade linux-image-ibmUpgrade linux-image-6.8.0-48-lowlatencyUpgrade linux-image-oem-22.04Upgrade linux-image-oem-22.04aUpgrade linux-image-oem-22.04cUpgrade linux-image-nvidiaUpgrade linux-image-genericUpgrade linux-image-lowlatency-64kUpgrade linux-image-raspiUpgrade linux-image-ibm-classicUpgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-1016-gcpUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.8.0-1015-oracleUpgrade linux-image-lowlatency-hwe-22.04 | Nov 4, 2024 | Aug 8, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 9, 2025 | Aug 8, 2024 |
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