Huawei EulerOS: CVE-2024-50040: kernel security update

Huawei EulerOS: CVE-2024-50040: kernel security update

Severity

4

CVSS

(AV:L/AC:M/Au:N/C:P/I:P/A:P)

Published

10/21/2024

Created

02/12/2025

Added

02/11/2025

Modified

02/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: igb: Do not bring the device up after non-fatal error Commit 004d25060c78 ("igb: Fix igb_down hung on surprise removal") changed igb_io_error_detected() to ignore non-fatal pcie errors in order to avoid hung task that can happen when igb_down() is called multiple times. This caused an issue when processing transient non-fatal errors. igb_io_resume(), which is called after igb_io_error_detected(), assumes that device is brought down by igb_io_error_detected() if the interface is up. This resulted in panic with stacktrace below. [ T3256] igb 0000:09:00.0 haeth0: igb: haeth0 NIC Link is Down [T292] pcieport 0000:00:1c.5: AER: Uncorrected (Non-Fatal) error received: 0000:09:00.0 [T292] igb 0000:09:00.0: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, (Requester ID) [T292] igb 0000:09:00.0: device [8086:1537] error status/mask=00004000/00000000 [T292] igb 0000:09:00.0:[14] CmpltTO [200.105524,009][T292] igb 0000:09:00.0: AER: TLP Header: 00000000 00000000 00000000 00000000 [T292] pcieport 0000:00:1c.5: AER: broadcast error_detected message [T292] igb 0000:09:00.0: Non-correctable non-fatal error reported. [T292] pcieport 0000:00:1c.5: AER: broadcast mmio_enabled message [T292] pcieport 0000:00:1c.5: AER: broadcast resume message [T292] ------------[ cut here ]------------ [T292] kernel BUG at net/core/dev.c:6539! [T292] invalid opcode: 0000 [#1] PREEMPT SMP [T292] RIP: 0010:napi_enable+0x37/0x40 [T292] Call Trace: [T292]<TASK> [T292]? die+0x33/0x90 [T292]? do_trap+0xdc/0x110 [T292]? napi_enable+0x37/0x40 [T292]? do_error_trap+0x70/0xb0 [T292]? napi_enable+0x37/0x40 [T292]? napi_enable+0x37/0x40 [T292]? exc_invalid_op+0x4e/0x70 [T292]? napi_enable+0x37/0x40 [T292]? asm_exc_invalid_op+0x16/0x20 [T292]? napi_enable+0x37/0x40 [T292]igb_up+0x41/0x150 [T292]igb_io_resume+0x25/0x70 [T292]report_resume+0x54/0x70 [T292]? report_frozen_detected+0x20/0x20 [T292]pci_walk_bus+0x6c/0x90 [T292]? aer_print_port_info+0xa0/0xa0 [T292]pcie_do_recovery+0x22f/0x380 [T292]aer_process_err_devices+0x110/0x160 [T292]aer_isr+0x1c1/0x1e0 [T292]? disable_irq_nosync+0x10/0x10 [T292]irq_thread_fn+0x1a/0x60 [T292]irq_thread+0xe3/0x1a0 [T292]? irq_set_affinity_notifier+0x120/0x120 [T292]? irq_affinity_notify+0x100/0x100 [T292]kthread+0xe2/0x110 [T292]? kthread_complete_and_exit+0x20/0x20 [T292]ret_from_fork+0x2d/0x50 [T292]? kthread_complete_and_exit+0x20/0x20 [T292]ret_from_fork_asm+0x11/0x20 [T292]</TASK> To fix this issue igb_io_resume() checks if the interface is running and the device is not down this means igb_io_error_detected() did not bring the device down and there is no need to bring it up.

Solution(s)

• huawei-euleros-2_0_sp12-upgrade-bpftool
• huawei-euleros-2_0_sp12-upgrade-kernel
• huawei-euleros-2_0_sp12-upgrade-kernel-abi-stablelists
• huawei-euleros-2_0_sp12-upgrade-kernel-tools
• huawei-euleros-2_0_sp12-upgrade-kernel-tools-libs
• huawei-euleros-2_0_sp12-upgrade-python3-perf

References

• https://attackerkb.com/topics/cve-2024-50040
• CVE - 2024-50040
• EulerOS-SA-2025-1192