In the Linux kernel, the following vulnerability has been resolved:
powerpc/rtas: avoid scheduling in rtas_os_term()
It's unsafe to use rtas_busy_delay() to handle a busy status from the ibm,os-term RTAS function in rtas_os_term():
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b BUG: sleeping function called from invalid context at arch/powerpc/kernel/rtas.c:618 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1, name: swapper/0 preempt_count: 2, expected: 0 CPU: 7 PID: 1 Comm: swapper/0 Tainted: G D 6.0.0-rc5-02182-gf8553a572277-dirty #9 Call Trace: [c000000007b8f000] [c000000001337110] dump_stack_lvl+0xb4/0x110 (unreliable) [c000000007b8f040] [c0000000002440e4] __might_resched+0x394/0x3c0 [c000000007b8f0e0] [c00000000004f680] rtas_busy_delay+0x120/0x1b0 [c000000007b8f100] [c000000000052d04] rtas_os_term+0xb8/0xf4 [c000000007b8f180] [c0000000001150fc] pseries_panic+0x50/0x68 [c000000007b8f1f0] [c000000000036354] ppc_panic_platform_handler+0x34/0x50 [c000000007b8f210] [c0000000002303c4] notifier_call_chain+0xd4/0x1c0 [c000000007b8f2b0] [c0000000002306cc] atomic_notifier_call_chain+0xac/0x1c0 [c000000007b8f2f0] [c0000000001d62b8] panic+0x228/0x4d0 [c000000007b8f390] [c0000000001e573c] do_exit+0x140c/0x1420 [c000000007b8f480] [c0000000001e586c] make_task_dead+0xdc/0x200
Use rtas_busy_delay_time() instead, which signals without side effects whether to attempt the ibm,os-term RTAS call again.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Oct 6, 2025 | Oct 6, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Oct 4, 2025 |
| Ubuntu | — | Upgrade linux-intel-iot-realtimeUpgrade linux-azure-fipsUpgrade linux-oracle-5.4Upgrade linux-nvidia-tegra-5.15Upgrade linux-aws-hweUpgrade linuxUpgrade linux-lowlatencyUpgrade linux-gcpUpgrade linux-aws-5.4Upgrade linux-awsUpgrade linux-riscv-5.15Upgrade linux-gcp-5.4Upgrade linux-ibm-5.4Upgrade linux-raspi-5.4Upgrade linux-fipsUpgrade linux-aws-5.15Upgrade linux-gkeUpgrade linux-nvidiaUpgrade linux-azureUpgrade linux-lowlatency-hwe-5.15Upgrade linux-gcp-fipsUpgrade linux-ibmUpgrade linux-azure-fdeUpgrade linux-bluefieldUpgrade linux-gkeopUpgrade linux-aws-fipsUpgrade linux-oracle-5.15Upgrade linux-hwe-5.15Upgrade linux-realtimeUpgrade linux-gcp-5.15Upgrade linux-oracleUpgrade linux-gcp-4.15Upgrade linux-intel-iotg-5.15Upgrade linux-hweUpgrade linux-azure-4.15Upgrade linux-xilinx-zynqmpUpgrade linux-kvmUpgrade linux-azure-fde-5.15Upgrade linux-azure-5.4Upgrade linux-hwe-5.4Upgrade linux-intel-iotgUpgrade linux-iotUpgrade linux-azure-5.15Upgrade linux-raspi | Oct 10, 2025 | Oct 4, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Oct 4, 2025 |
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