416baaa9-dc9f-4396-8d5f-8c081fb06d67NVD:CVE-2021-47520CVE-2021-47520
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5 Medium
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
5.1%
In the Linux kernel, the following vulnerability has been resolved:
can: pch_can: pch_can_rx_normal: fix use after free
After calling netif_receive_skb(skb), dereferencing skb is unsafe.
Especially, the can_frame cf which aliases skb memory is dereferenced
just after the call netif_receive_skb(skb).
Reordering the lines solves the issue.
Affected configurations
References
git.kernel.org/stable/c/3a3c46e2eff0577454860a203be1a8295f4acb76
git.kernel.org/stable/c/3e193ef4e0a3f5bf92ede83ef214cb09d01b00aa
git.kernel.org/stable/c/6c73fc931658d8cbc8a1714b326cb31eb71d16a7
git.kernel.org/stable/c/703dde112021c93d6e89443c070e7dbd4dea612e
git.kernel.org/stable/c/94cddf1e9227a171b27292509d59691819c458db
git.kernel.org/stable/c/abb4eff3dcd2e583060082a18a8dbf31f02689d4
git.kernel.org/stable/c/affbad02bf80380a7403885b9fe4a1587d1bb4f3
git.kernel.org/stable/c/bafe343a885c70dddf358379cf0b2a1c07355d8d
Related
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5 Medium
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
5.1%