LinuxCVE-2024-46743CVE-2024-46743
In the Linux kernel, the following vulnerability has been resolved:
of/irq: Prevent device address out-of-bounds read in interrupt map walk
When of_irq_parse_raw() is invoked with a device address smaller than
the interrupt parent node (from #address-cells property), KASAN detects
the following out-of-bounds read when populating the initial match table
(dyndbg=“func of_irq_parse_* +p”):
OF: of_irq_parse_one: dev=/soc@0/picasso/watchdog, index=0
OF: parent=/soc@0/pci@878000000000/gpio0@17,0, intsize=2
OF: intspec=4
OF: of_irq_parse_raw: ipar=/soc@0/pci@878000000000/gpio0@17,0, size=2
OF: -> addrsize=3
BUG: KASAN: slab-out-of-bounds in of_irq_parse_raw+0x2b8/0x8d0
Read of size 4 at addr ffffff81beca5608 by task bash/764
CPU: 1 PID: 764 Comm: bash Tainted: G O 6.1.67-484c613561-nokia_sm_arm64 #1
Hardware name: Unknown Unknown Product/Unknown Product, BIOS 2023.01-12.24.03-dirty 01/01/2023
Call trace:
dump_backtrace+0xdc/0x130
show_stack+0x1c/0x30
dump_stack_lvl+0x6c/0x84
print_report+0x150/0x448
kasan_report+0x98/0x140
__asan_load4+0x78/0xa0
of_irq_parse_raw+0x2b8/0x8d0
of_irq_parse_one+0x24c/0x270
parse_interrupts+0xc0/0x120
of_fwnode_add_links+0x100/0x2d0
fw_devlink_parse_fwtree+0x64/0xc0
device_add+0xb38/0xc30
of_device_add+0x64/0x90
of_platform_device_create_pdata+0xd0/0x170
of_platform_bus_create+0x244/0x600
of_platform_notify+0x1b0/0x254
blocking_notifier_call_chain+0x9c/0xd0
__of_changeset_entry_notify+0x1b8/0x230
__of_changeset_apply_notify+0x54/0xe4
of_overlay_fdt_apply+0xc04/0xd94
…
The buggy address belongs to the object at ffffff81beca5600
which belongs to the cache kmalloc-128 of size 128
The buggy address is located 8 bytes inside of
128-byte region [ffffff81beca5600, ffffff81beca5680)
The buggy address belongs to the physical page:
page:00000000230d3d03 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1beca4
head:00000000230d3d03 order:1 compound_mapcount:0 compound_pincount:0
flags: 0x8000000000010200(slab|head|zone=2)
raw: 8000000000010200 0000000000000000 dead000000000122 ffffff810000c300
raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffffff81beca5500: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffffff81beca5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffffff81beca5600: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffffff81beca5680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffffff81beca5700: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
OF: -> got it !
Prevent the out-of-bounds read by copying the device address into a
buffer of sufficient size.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
CNA Affected
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/of/irq.c"
],
"versions": [
{
"version": "1da177e4c3f4",
"lessThan": "d2a79494d8a5",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f4",
"lessThan": "defcaa426ba0",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f4",
"lessThan": "9d1e9f0876b0",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f4",
"lessThan": "baaf26723bea",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f4",
"lessThan": "8ff351ea12e9",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f4",
"lessThan": "7ead730af11e",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f4",
"lessThan": "bf68acd840b6",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f4",
"lessThan": "b739dffa5d57",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/of/irq.c"
],
"versions": [
{
"version": "4.19.322",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.4.284",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.226",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.15.167",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.1.110",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.51",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.10.10",
"lessThanOrEqual": "6.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.11",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]References
git.kernel.org/stable/c/7ead730af11ee7da107f16fc77995613c58d292d
git.kernel.org/stable/c/8ff351ea12e918db1373b915c4c268815929cbe5
git.kernel.org/stable/c/9d1e9f0876b03d74d44513a0ed3ed15ef8f2fed5
git.kernel.org/stable/c/b739dffa5d570b411d4bdf4bb9b8dfd6b7d72305
git.kernel.org/stable/c/baaf26723beab3a04da578d3008be3544f83758f
git.kernel.org/stable/c/bf68acd840b6a5bfd3777e0d5aaa204db6b461a9
git.kernel.org/stable/c/d2a79494d8a5262949736fb2c3ac44d20a51b0d8
git.kernel.org/stable/c/defcaa426ba0bc89ffdafb799d2e50b52f74ffc4
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