CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
13.0%
In the Linux kernel, the following vulnerability has been resolved:
can: peak_pci: peak_pci_remove(): fix UAF
When remove the module peek_pci, referencing ‘chan’ again after
releasing ‘dev’ will cause UAF.
Fix this by releasing ‘dev’ later.
The following log reveals it:
[ 35.961814 ] BUG: KASAN: use-after-free in peak_pci_remove+0x16f/0x270 [peak_pci]
[ 35.963414 ] Read of size 8 at addr ffff888136998ee8 by task modprobe/5537
[ 35.965513 ] Call Trace:
[ 35.965718 ] dump_stack_lvl+0xa8/0xd1
[ 35.966028 ] print_address_description+0x87/0x3b0
[ 35.966420 ] kasan_report+0x172/0x1c0
[ 35.966725 ] ? peak_pci_remove+0x16f/0x270 [peak_pci]
[ 35.967137 ] ? trace_irq_enable_rcuidle+0x10/0x170
[ 35.967529 ] ? peak_pci_remove+0x16f/0x270 [peak_pci]
[ 35.967945 ] __asan_report_load8_noabort+0x14/0x20
[ 35.968346 ] peak_pci_remove+0x16f/0x270 [peak_pci]
[ 35.968752 ] pci_device_remove+0xa9/0x250
git.kernel.org/stable/c/0e5afdc2315b0737edcf55bede4ee1640d2d464d
git.kernel.org/stable/c/1248582e47a9f7ce0ecd156c39fc61f8b6aa3699
git.kernel.org/stable/c/1c616528ba4aeb1125a06b407572ab7b56acae38
git.kernel.org/stable/c/28f28e4bc3a5e0051faa963f10b778ab38c1db69
git.kernel.org/stable/c/34914971bb3244db4ce2be44e9438a9b30c56250
git.kernel.org/stable/c/447d44cd2f67a20b596ede3ca3cd67086dfd9ca9
git.kernel.org/stable/c/949fe9b35570361bc6ee2652f89a0561b26eec98
git.kernel.org/stable/c/adbda14730aacce41c0d3596415aa39ad63eafd9