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In the Linux kernel, the following vulnerability has been resolved:
net: ks8851: Fix deadlock with the SPI chip variant
When SMP is enabled and spinlocks are actually functional then there is a deadlock with the 'statelock' spinlock between ks8851_start_xmit_spi and ks8851_irq:
watchdog: BUG: soft lockup - CPU#0 stuck for 27s! call trace: queued_spin_lock_slowpath+0x100/0x284 do_raw_spin_lock+0x34/0x44 ks8851_start_xmit_spi+0x30/0xb8 ks8851_start_xmit+0x14/0x20 netdev_start_xmit+0x40/0x6c dev_hard_start_xmit+0x6c/0xbc sch_direct_xmit+0xa4/0x22c __qdisc_run+0x138/0x3fc qdisc_run+0x24/0x3c net_tx_action+0xf8/0x130 handle_softirqs+0x1ac/0x1f0 __do_softirq+0x14/0x20 ____do_softirq+0x10/0x1c call_on_irq_stack+0x3c/0x58 do_softirq_own_stack+0x1c/0x28 __irq_exit_rcu+0x54/0x9c irq_exit_rcu+0x10/0x1c el1_interrupt+0x38/0x50 el1h_64_irq_handler+0x18/0x24 el1h_64_irq+0x64/0x68 __netif_schedule+0x6c/0x80 netif_tx_wake_queue+0x38/0x48 ks8851_irq+0xb8/0x2c8 irq_thread_fn+0x2c/0x74 irq_thread+0x10c/0x1b0 kthread+0xc8/0xd8 ret_from_fork+0x10/0x20
This issue has not been identified earlier because tests were done on a device with SMP disabled and so spinlocks were actually NOPs.
Now use spin_(un)lock_bh for TX queue related locking to avoid execution of softirq work synchronously that would lead to a deadlock.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.1Upgrade linux | Sep 2, 2024 | Jul 29, 2024 |
| Suse | — | Upgrade kernel-symsUpgrade dtb-armUpgrade kernel-azure-livepatch-develUpgrade kernel-rtUpgrade gfs2-kmp-64kbUpgrade cluster-md-kmp-azureUpgrade kernel-debug-livepatch-develUpgrade kernel-source-rtUpgrade kernel-docs-htmlUpgrade kernel-rt-optionalUpgrade reiserfs-kmp-64kbUpgrade kernel-azure-extraUpgrade kernel-64kb-livepatch-develUpgrade kernel-devel-azureUpgrade dtb-rockchipUpgrade kernel-syms-rtUpgrade kernel-azure-develUpgrade dlm-kmp-azureUpgrade dtb-amlogicUpgrade kernel-rt-livepatch-develUpgrade kselftests-kmp-defaultUpgrade kernel-kvmsmallUpgrade dlm-kmp-defaultUpgrade kernel-kvmsmall-vdsoUpgrade dtb-qcomUpgrade kernel-default-develUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-obs-qaUpgrade kernel-64kbUpgrade reiserfs-kmp-rtUpgrade dtb-apmUpgrade dtb-socionextUpgrade kernel-default-base-rebuildUpgrade dtb-appleUpgrade kernel-macrosUpgrade cluster-md-kmp-defaultUpgrade dtb-broadcomUpgrade kernel-rt_debug-vdsoUpgrade kernel-rt_debugUpgrade dtb-marvellUpgrade kernel-docsUpgrade kernel-sourceUpgrade kernel-rt-vdsoUpgrade kernel-zfcpdumpUpgrade kernel-default-extraUpgrade kernel-syms-azureUpgrade kernel-kvmsmall-develUpgrade ocfs2-kmp-rtUpgrade kselftests-kmp-rtUpgrade kernel-azure-vdsoUpgrade gfs2-kmp-rtUpgrade dtb-amazonUpgrade kernel-debugUpgrade kernel-defaultUpgrade kernel-azureUpgrade kernel-obs-buildUpgrade kernel-default-livepatch-develUpgrade dtb-sprdUpgrade dtb-nvidiaUpgrade gfs2-kmp-azureUpgrade dtb-freescaleUpgrade kernel-64kb-develUpgrade kernel-debug-develUpgrade reiserfs-kmp-defaultUpgrade ocfs2-kmp-azureUpgrade kernel-rt_debug-develUpgrade dlm-kmp-64kbUpgrade dtb-alteraUpgrade cluster-md-kmp-64kbUpgrade kernel-source-vanillaUpgrade kernel-source-azureUpgrade kernel-rt-develUpgrade kernel-default-baseUpgrade dtb-xilinxUpgrade dlm-kmp-rtUpgrade kernel-64kb-optionalUpgrade gfs2-kmp-defaultUpgrade dtb-renesasUpgrade dtb-caviumUpgrade cluster-md-kmp-rtUpgrade ocfs2-kmp-64kbUpgrade ocfs2-kmp-defaultUpgrade dtb-lgUpgrade dtb-allwinnerUpgrade kernel-default-optionalUpgrade kernel-default-vdsoUpgrade dtb-mediatekUpgrade dtb-exynosUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-develUpgrade kernel-azure-optionalUpgrade dtb-hisiliconUpgrade kernel-default-livepatchUpgrade kernel-rt-extraUpgrade kernel-debug-vdsoUpgrade kernel-devel-rtUpgrade kselftests-kmp-64kbUpgrade kernel-rt-livepatchUpgrade kernel-64kb-extraUpgrade dtb-amdUpgrade reiserfs-kmp-azureUpgrade kselftests-kmp-azure | Dec 5, 2025 | Sep 10, 2024 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1013-gkeUpgrade linux-image-lowlatencyUpgrade linux-image-gkeopUpgrade linux-image-6.8.0-1017-gcpUpgrade linux-image-lowlatency-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-nvidiaUpgrade linux-image-oem-24.04aUpgrade linux-image-6.8.0-48-lowlatency-64kUpgrade linux-image-nvidia-6.8Upgrade linux-image-oem-22.04cUpgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-1017-nvidia-64kUpgrade linux-image-6.8.0-1016-azureUpgrade linux-image-raspiUpgrade linux-image-6.8.0-1014-ibmUpgrade linux-image-azure-fdeUpgrade linux-image-azureUpgrade linux-image-ibmUpgrade linux-image-nvidia-64kUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-generic-64kUpgrade linux-image-6.8.0-1017-azureUpgrade linux-image-6.8.0-1016-azure-fdeUpgrade linux-image-oracle-64kUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.8.0-1017-nvidiaUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oem-22.04Upgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-1015-oracle-64kUpgrade linux-image-gkeop-6.8Upgrade linux-image-oem-22.04aUpgrade linux-image-6.8.0-48-lowlatencyUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-genericUpgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-48-generic-64kUpgrade linux-image-6.8.0-1017-nvidia-lowlatencyUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1002-gkeopUpgrade linux-image-6.8.0-1017-azure-fdeUpgrade linux-image-6.8.0-1018-awsUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-1016-gcpUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-awsUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-48-genericUpgrade linux-image-gkeUpgrade linux-image-gcpUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-oracleUpgrade linux-image-6.8.0-1015-oracleUpgrade linux-image-virtualUpgrade linux-image-oem-24.04Upgrade linux-image-6.8.0-1016-oemUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-1017-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1014-raspiUpgrade linux-image-generic-lpaeUpgrade linux-image-kvmUpgrade linux-image-lowlatency-hwe-22.04 | Nov 4, 2024 | Jul 29, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 17, 2025 | Jul 29, 2024 |
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