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In the Linux kernel, the following vulnerability has been resolved:
i2c: core: Run atomic i2c xfer when !preemptible
Since bae1d3a05a8b, i2c transfers are non-atomic if preemption is disabled. However, non-atomic i2c transfers require preemption (e.g. in wait_for_completion() while waiting for the DMA).
panic() calls preempt_disable_notrace() before calling emergency_restart(). Therefore, if an i2c device is used for the restart, the xfer should be atomic. This avoids warnings like:
[ 12.667612] WARNING: CPU: 1 PID: 1 at kernel/rcu/tree_plugin.h:318 rcu_note_context_switch+0x33c/0x6b0 [ 12.676926] Voluntary context switch within RCU read-side critical section! ... [ 12.742376] schedule_timeout from wait_for_completion_timeout+0x90/0x114 [ 12.749179] wait_for_completion_timeout from tegra_i2c_wait_completion+0x40/0x70 ... [ 12.994527] atomic_notifier_call_chain from machine_restart+0x34/0x58 [ 13.001050] machine_restart from panic+0x2a8/0x32c
Use !preemptible() instead, which is basically the same check as pre-v5.2.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-rt-debug-coreUpgrade kernel-rt-kvmUpgrade kernel-cross-headersUpgrade kernel-toolsUpgrade kernel-rt-develUpgrade bpftoolUpgrade kernel-rt-modules-extraUpgrade kernel-debug-modules-extraUpgrade kernel-rtUpgrade kernel-tools-libs-develUpgrade kernel-zfcpdump-coreUpgrade kernel-tools-libsUpgrade kernel-debug-modulesUpgrade kernel-develUpgrade kernelUpgrade kernel-rt-debugUpgrade kernel-zfcpdump-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-coreUpgrade kernel-debugUpgrade kernel-rt-modulesUpgrade kernel-coreUpgrade python3-perfUpgrade kernel-modules-extraUpgrade kernel-modulesUpgrade perfUpgrade kernel-headersUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-develUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debug-develUpgrade kernel-zfcpdumpUpgrade kernel-abi-stablelistsUpgrade kernel-debug-coreUpgrade kernel-rt-debug-kvmUpgrade kernel-docUpgrade kernel-zfcpdump-modules | Aug 12, 2024 | May 21, 2024 |
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade kernel-livepatch-5.15.145-95.156Upgrade kernel-headersUpgrade python-perf-debuginfoUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade kernel-tools-develUpgrade python-perfUpgrade kernel-livepatch-5.10.205-195.804Upgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade kernel-develUpgrade bpftool-debuginfoUpgrade bpftool | Dec 12, 2024 | May 21, 2024 |
| Amazon_linux_2023 | — | Upgrade kernel-tools-develUpgrade python3-perfUpgrade kernel-libbpf-develUpgrade kernel-debuginfoUpgrade kernelUpgrade kernel-develUpgrade kernel-libbpfUpgrade kernel-livepatch-6.1.66-91.160Upgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade perfUpgrade bpftoolUpgrade kernel-modules-extraUpgrade python3-perf-debuginfoUpgrade kernel-libbpf-staticUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-tools | Feb 17, 2025 | May 21, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | May 21, 2024 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-tools-libsUpgrade kernel-toolsUpgrade python3-perfUpgrade bpftoolUpgrade kernelUpgrade kernel-abi-stablelists | Dec 12, 2024 | May 21, 2024 |
| Oracle_linux | — | Upgrade kernel | Aug 16, 2024 | May 21, 2024 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rt | Aug 12, 2024 | May 21, 2024 |
| Rocky_linux | — | Upgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel-rt-debug-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-cross-headersUpgrade kernel-rt-debugUpgrade kernel-toolsUpgrade kernel-debug-modulesUpgrade kernel-rt-modules-extraUpgrade kernel-rt-kvmUpgrade kernel-rt-debug-coreUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-coreUpgrade kernel-rtUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-libs-develUpgrade kernel-rt-develUpgrade kernel-develUpgrade bpftoolUpgrade kernel-rt-debug-modulesUpgrade kernel-headersUpgrade kernel-modulesUpgrade kernel-coreUpgrade kernel-rt-modulesUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debug-coreUpgrade kernel-modules-extraUpgrade kernel-debug-develUpgrade kernel-debugUpgrade kernel-rt-debug-kvmUpgrade kernel-rt-debuginfoUpgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-rt-debug-develUpgrade perfUpgrade kernel-debug-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-debug-modules-extra | Aug 22, 2024 | May 21, 2024 |
| Suse | — | Upgrade kernel-docsUpgrade kernel-devel-azureUpgrade dtb-broadcomUpgrade kernel-kvmsmall-vdsoUpgrade dtb-freescaleUpgrade kernel-azure-extraUpgrade dtb-marvellUpgrade dtb-amdUpgrade dlm-kmp-azureUpgrade ocfs2-kmp-64kbUpgrade kernel-source-rtUpgrade kernel-azure-vdsoUpgrade kernel-kvmsmallUpgrade kernel-default-extraUpgrade kernel-debug-livepatch-develUpgrade kernel-rt-optionalUpgrade kernel-obs-qaUpgrade dlm-kmp-defaultUpgrade kernel-rt-extraUpgrade kernel-default-baseUpgrade kernel-debug-develUpgrade kernel-azure-develUpgrade dtb-nvidiaUpgrade cluster-md-kmp-defaultUpgrade kernel-rt-vdsoUpgrade kernel-64kb-livepatch-develUpgrade gfs2-kmp-rtUpgrade gfs2-kmp-64kbUpgrade kernel-docs-htmlUpgrade kselftests-kmp-rtUpgrade kselftests-kmp-defaultUpgrade kernel-rt_debug-vdsoUpgrade kernel-rt_debugUpgrade kernel-azure-livepatch-develUpgrade kernel-zfcpdumpUpgrade dtb-appleUpgrade reiserfs-kmp-64kbUpgrade kernel-macrosUpgrade dtb-amlogicUpgrade kernel-defaultUpgrade reiserfs-kmp-rtUpgrade kernel-default-livepatchUpgrade dtb-apmUpgrade kernel-kvmsmall-develUpgrade ocfs2-kmp-rtUpgrade kernel-syms-rtUpgrade kernel-obs-buildUpgrade kernel-rt-livepatch-develUpgrade kernel-kvmsmall-livepatch-develUpgrade dtb-socionextUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-source-azureUpgrade cluster-md-kmp-azureUpgrade kernel-rt-livepatchUpgrade kernel-rtUpgrade kernel-64kb-optionalUpgrade dtb-qcomUpgrade kernel-azureUpgrade dtb-rockchipUpgrade dtb-xilinxUpgrade dtb-amazonUpgrade ocfs2-kmp-defaultUpgrade kernel-sourceUpgrade kselftests-kmp-64kbUpgrade dlm-kmp-64kbUpgrade dtb-renesasUpgrade cluster-md-kmp-64kbUpgrade kernel-default-develUpgrade dtb-sprdUpgrade dtb-hisiliconUpgrade kernel-source-vanillaUpgrade ocfs2-kmp-azureUpgrade kernel-debugUpgrade kernel-devel-rtUpgrade dtb-exynosUpgrade kernel-64kb-extraUpgrade dtb-armUpgrade kernel-default-optionalUpgrade kernel-default-livepatch-develUpgrade dtb-lgUpgrade kernel-rt_debug-develUpgrade dtb-caviumUpgrade reiserfs-kmp-defaultUpgrade kernel-syms-azureUpgrade dlm-kmp-rtUpgrade reiserfs-kmp-azureUpgrade kernel-64kbUpgrade kernel-debug-vdsoUpgrade dtb-allwinnerUpgrade gfs2-kmp-azureUpgrade dtb-alteraUpgrade kernel-azure-optionalUpgrade kernel-default-vdsoUpgrade kernel-default-base-rebuildUpgrade kernel-develUpgrade kernel-rt-develUpgrade kernel-symsUpgrade dtb-mediatekUpgrade kselftests-kmp-azureUpgrade gfs2-kmp-defaultUpgrade cluster-md-kmp-rtUpgrade kernel-64kb-devel | Jun 13, 2024 | May 21, 2024 |
| Ubuntu | — | Upgrade linux-gkeopUpgrade linux-ibmUpgrade linux-azure-fdeUpgrade linuxUpgrade linux-gkeUpgrade linux-oracle-5.4Upgrade linux-azure-fipsUpgrade linux-iotUpgrade linux-aws-5.4Upgrade linux-lowlatencyUpgrade linux-intel-iotg-5.15Upgrade linux-ibm-5.4Upgrade linux-raspiUpgrade linux-aws-5.15Upgrade linux-azure-5.15Upgrade linux-hwe-5.15Upgrade linux-aws-fipsUpgrade linux-azure-5.4Upgrade linux-gkeop-5.15Upgrade linux-oracle-5.15Upgrade linux-azureUpgrade linux-gcp-fipsUpgrade linux-nvidia-tegra-igxUpgrade linux-intel-iot-realtimeUpgrade linux-nvidiaUpgrade linux-awsUpgrade linux-gcp-5.4Upgrade linux-bluefieldUpgrade linux-gcp-5.15Upgrade linux-realtimeUpgrade linux-ibm-5.15Upgrade linux-oracleUpgrade linux-nvidia-tegraUpgrade linux-xilinx-zynqmpUpgrade linux-nvidia-tegra-5.15Upgrade linux-kvmUpgrade linux-hwe-5.4Upgrade linux-gcpUpgrade linux-intel-iotgUpgrade linux-lowlatency-hwe-5.15Upgrade linux-fipsUpgrade linux-raspi-5.4Upgrade linux-nvidia-6.5Upgrade linux-riscv-5.15 | Nov 19, 2024 | May 21, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | May 21, 2024 |
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