CVE-2024-46743

CVE Details

Release Date:

2024-09-18

Description

In the Linux kernel, the following vulnerability has been resolved:\nof/irq: Prevent device address out-of-bounds read in interrupt map walk\nWhen of_irq_parse_raw() is invoked with a device address smaller than\nthe interrupt parent node (from #address-cells property), KASAN detects\nthe following out-of-bounds read when populating the initial match table\n(dyndbg='func of_irq_parse_* +p'):\nOF: of_irq_parse_one: dev=/soc@0/picasso/watchdog, index=0\nOF: parent=/soc@0/pci@878000000000/gpio0@17,0, intsize=2\nOF: intspec=4\nOF: of_irq_parse_raw: ipar=/soc@0/pci@878000000000/gpio0@17,0, size=2\nOF: -> addrsize=3\n==================================================================\nBUG: KASAN: slab-out-of-bounds in of_irq_parse_raw+0x2b8/0x8d0\nRead of size 4 at addr ffffff81beca5608 by task bash/764\nCPU: 1 PID: 764 Comm: bash Tainted: G O 6.1.67-484c613561-nokia_sm_arm64 #1\nHardware name: Unknown Unknown Product/Unknown Product, BIOS 2023.01-12.24.03-dirty 01/01/2023\nCall trace:\ndump_backtrace+0xdc/0x130\nshow_stack+0x1c/0x30\ndump_stack_lvl+0x6c/0x84\nprint_report+0x150/0x448\nkasan_report+0x98/0x140\n__asan_load4+0x78/0xa0\nof_irq_parse_raw+0x2b8/0x8d0\nof_irq_parse_one+0x24c/0x270\nparse_interrupts+0xc0/0x120\nof_fwnode_add_links+0x100/0x2d0\nfw_devlink_parse_fwtree+0x64/0xc0\ndevice_add+0xb38/0xc30\nof_device_add+0x64/0x90\nof_platform_device_create_pdata+0xd0/0x170\nof_platform_bus_create+0x244/0x600\nof_platform_notify+0x1b0/0x254\nblocking_notifier_call_chain+0x9c/0xd0\n__of_changeset_entry_notify+0x1b8/0x230\n__of_changeset_apply_notify+0x54/0xe4\nof_overlay_fdt_apply+0xc04/0xd94\n...\nThe buggy address belongs to the object at ffffff81beca5600\nwhich belongs to the cache kmalloc-128 of size 128\nThe buggy address is located 8 bytes inside of\n128-byte region [ffffff81beca5600, ffffff81beca5680)\nThe buggy address belongs to the physical page:\npage:00000000230d3d03 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1beca4\nhead:00000000230d3d03 order:1 compound_mapcount:0 compound_pincount:0\nflags: 0x8000000000010200(slab|head|zone=2)\nraw: 8000000000010200 0000000000000000 dead000000000122 ffffff810000c300\nraw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000\npage dumped because: kasan: bad access detected\nMemory state around the buggy address:\nffffff81beca5500: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\nffffff81beca5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n>ffffff81beca5600: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n^\nffffff81beca5680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\nffffff81beca5700: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc\n==================================================================\nOF: -> got it !\nPrevent the out-of-bounds read by copying the device address into a\nbuffer of sufficient size.

See more information about CVE-2024-46743 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:	5.5
Vector String:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
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-2024-12813	2024-11-12
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12868	2024-12-06
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12813	2024-11-12
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12815	2024-11-11
Oracle Linux version 9 (kernel-uek)	ELSA-2024-12815	2024-11-11