01 Record

CVE-2021-47520

can: pch_can: pch_can_rx_normal: fix use after free

HighPUBLISHEDCNA: Linux

CNA base score8.8 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

can: pch_can: pch_can_rx_normal: fix use after free

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.34% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 26.7% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2024-05-24 15:09Z2 YR AGO

Last updated

2026-08-05 08:48Z1 MO AGO

Reserved

2024-05-24

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-416Use After FreeVariant

Data version

5.2

Document digest

68d57b403cf3b19140f4957ecca63af9046909bf6c422640cbf8c5ed63ad737e

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxb21d18b51b31a24d17f883b678432fbdee3d5675 to < bafe343a885c70dddf358379cf0b2a1c07355d8d, b21d18b51b31a24d17f883b678432fbdee3d5675 to < 3a3c46e2eff0577454860a203be1a8295f4acb76, b21d18b51b31a24d17f883b678432fbdee3d5675 to < affbad02bf80380a7403885b9fe4a1587d1bb4f3, b21d18b51b31a24d17f883b678432fbdee3d5675 to < 3e193ef4e0a3f5bf92ede83ef214cb09d01b00aa, b21d18b51b31a24d17f883b678432fbdee3d5675 to < abb4eff3dcd2e583060082a18a8dbf31f02689d4, b21d18b51b31a24d17f883b678432fbdee3d5675 to < 703dde112021c93d6e89443c070e7dbd4dea612e, b21d18b51b31a24d17f883b678432fbdee3d5675 to < 6c73fc931658d8cbc8a1714b326cb31eb71d16a7, b21d18b51b31a24d17f883b678432fbdee3d5675 to < 94cddf1e9227a171b27292509d59691819c458db, 2.6.37—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/bafe343a885c70dddf358379cf0b2a1c07355d8d
git.kernel.orghttps://git.kernel.org/stable/c/3a3c46e2eff0577454860a203be1a8295f4acb76
git.kernel.orghttps://git.kernel.org/stable/c/affbad02bf80380a7403885b9fe4a1587d1bb4f3
git.kernel.orghttps://git.kernel.org/stable/c/3e193ef4e0a3f5bf92ede83ef214cb09d01b00aa
git.kernel.orghttps://git.kernel.org/stable/c/abb4eff3dcd2e583060082a18a8dbf31f02689d4
git.kernel.orghttps://git.kernel.org/stable/c/703dde112021c93d6e89443c070e7dbd4dea612e
git.kernel.orghttps://git.kernel.org/stable/c/6c73fc931658d8cbc8a1714b326cb31eb71d16a7
git.kernel.orghttps://git.kernel.org/stable/c/94cddf1e9227a171b27292509d59691819c458db

01 Record index

CVE-2021-47520

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-47520

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References