In the Linux kernel, the following vulnerability has been resolved:
powerpc/64: Init jump labels before parse_early_param()
On 64-bit, calling jump_label_init() in setup_feature_keys() is too late because static keys may be used in subroutines of parse_early_param() which is again subroutine of early_init_devtree().
For example booting with "threadirqs":
static_key_enable_cpuslocked(): static key '0xc000000002953260' used before call to jump_label_init() WARNING: CPU: 0 PID: 0 at kernel/jump_label.c:166 static_key_enable_cpuslocked+0xfc/0x120 ... NIP static_key_enable_cpuslocked+0xfc/0x120 LR static_key_enable_cpuslocked+0xf8/0x120 Call Trace: static_key_enable_cpuslocked+0xf8/0x120 (unreliable) static_key_enable+0x30/0x50 setup_forced_irqthreads+0x28/0x40 do_early_param+0xa0/0x108 parse_args+0x290/0x4e0 parse_early_options+0x48/0x5c parse_early_param+0x58/0x84 early_init_devtree+0xd4/0x518 early_setup+0xb4/0x214
So call jump_label_init() just before parse_early_param() in early_init_devtree().
[mpe: Add call trace to change log and minor wording edits.]
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 20, 2025 | Jun 20, 2025 |
| Dell Powerstore Dsa2025429 | — | Upgrade Dell PowerStoreOS to the latest version | Dec 3, 2025 | Dec 2, 2025 |
| Dell Powerstore Dsa2026039 | — | Upgrade Dell PowerStoreOS to the latest version | Jan 13, 2026 | Jan 6, 2026 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jun 18, 2025 |
| Ubuntu | — | Upgrade linux-nvidiaUpgrade linux-oracle-5.4Upgrade linux-gkeopUpgrade linux-aws-fipsUpgrade linux-oracleUpgrade linux-intel-iotgUpgrade linux-gcpUpgrade linux-azure-fde-5.15Upgrade linux-lowlatencyUpgrade linux-ibmUpgrade linux-realtimeUpgrade linux-fipsUpgrade linux-lowlatency-hwe-5.15Upgrade linux-gcp-5.4Upgrade linux-gkeUpgrade linux-oracle-5.15Upgrade linux-gcp-5.15Upgrade linux-aws-5.4Upgrade linux-aws-5.15Upgrade linux-azure-5.15Upgrade linux-kvmUpgrade linux-riscv-5.15Upgrade linux-aws-hweUpgrade linux-bluefieldUpgrade linux-hwe-5.15Upgrade linux-azure-5.4Upgrade linux-ibm-5.4Upgrade linux-raspi-5.4Upgrade linux-azure-4.15Upgrade linux-gcp-fipsUpgrade linux-iotUpgrade linux-azureUpgrade linux-azure-fipsUpgrade linux-hwe-5.4Upgrade linux-awsUpgrade linux-hweUpgrade linux-raspiUpgrade linux-intel-iotg-5.15Upgrade linuxUpgrade linux-gcp-4.15 | Jun 26, 2025 | Jun 18, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jun 18, 2025 |
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