Debian Security Bug TrackerDEBIANCVE: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
6.8 Medium
AI Score
Confidence
High
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | linux | < 5.15.15-1 | linux_5.15.15-1_all.deb |
| Debian | 11 | all | linux | < 5.10.92-1 | linux_5.10.92-1_all.deb |
| Debian | 10 | all | linux | < 4.19.232-1 | linux_4.19.232-1_all.deb |
| Debian | 999 | all | linux | < 5.15.15-1 | linux_5.15.15-1_all.deb |
| Debian | 13 | all | linux | < 5.15.15-1 | linux_5.15.15-1_all.deb |
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
6.8 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
5.1%