CVE-2024-50040

CVE Details

Release Date:

2024-10-21

Description

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

See more information about CVE-2024-50040 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	4.7
Vector String:	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	High
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality:	None
Integrity:	None
Availability:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12884	2024-12-16
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12884	2024-12-16
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12887	2024-12-18
Oracle Linux version 9 (kernel-uek)	ELSA-2024-12887	2024-12-18