Home/CVE/In the Linux kernel, the following vulnerability has been resolved: can: peak_pci: peak_pci_remove(): fix UAF When rem
CVE

CVE-2021-47456

In the Linux kernel, the following vulnerability has been resolved: can: peak_pci: peak_pci_remove(): fix UAF When rem

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.

HIGH · CVSS 8.4 EPSS 0.00028
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
CWE-467Use of sizeof() on a Pointer Type
▤

Affected Products & Versions

8
linux kernel>= 3.4 and < 4.4.290
linux kernel>= 4.5 and < 4.9.288
linux kernel>= 4.10 and < 4.14.253
linux kernel>= 4.15 and < 4.19.214
linux kernel>= 4.20 and < 5.4.156
linux kernel>= 5.5 and < 5.10.76
linux kernel>= 5.11 and < 5.14.15
linux kernelall versions
▣

Scoring & Timeline

8.4
HIGH · CVSS v3.1 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 May 2024 · 07:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

13
rhsaRHSA-2024:4211Moderate
suse-csafSUSE-SU-2024:2189-1
suse-csafSUSE-SU-2024:2190-1
suse-csafSUSE-SU-2024:2183-1
suse-csafSUSE-SU-2024:2184-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://git.kernel.org/stable/c/0e5afdc2315b0737edcf55bede4ee1640d2d464dPatch
https://git.kernel.org/stable/c/1248582e47a9f7ce0ecd156c39fc61f8b6aa3699Patch
https://git.kernel.org/stable/c/1c616528ba4aeb1125a06b407572ab7b56acae38Patch
https://git.kernel.org/stable/c/28f28e4bc3a5e0051faa963f10b778ab38c1db69Patch
https://git.kernel.org/stable/c/34914971bb3244db4ce2be44e9438a9b30c56250Patch
https://git.kernel.org/stable/c/447d44cd2f67a20b596ede3ca3cd67086dfd9ca9Patch
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