01 Record

CVE-2021-47333

misc: alcor_pci: fix null-ptr-deref when there is no PCI bridge

MediumPUBLISHEDCNA: Linux

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

View raw JSON

02 Description

misc: alcor_pci: fix null-ptr-deref when there is no PCI bridge

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

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 15.1% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/I:N/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. 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

2024-05-21 14:35Z2 YR AGO

Last updated

2026-05-11 13:52Z3 MO AGO

Reserved

2024-05-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

1e77c8d83f170771b0c6cca658fa880926b265ca407ee534e8cb78439aea4401

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux4f556bc04e3c0de2f5c69adc9e9f2bcefcad079d to < d2639ffdcad463b358b6bef8645ff81715daffcb, 4f556bc04e3c0de2f5c69adc9e9f2bcefcad079d to < 58f69684ba03e5b0e0a3ae844a845280c0f06309, 4f556bc04e3c0de2f5c69adc9e9f2bcefcad079d to < 717cf5ae52322ddbdf3ac2c584b34c5970b0d174, 4f556bc04e3c0de2f5c69adc9e9f2bcefcad079d to < 09d154990ca82d14aed2b72796f6c8845e2e605d, 4f556bc04e3c0de2f5c69adc9e9f2bcefcad079d to < 3ce3e45cc333da707d4d6eb433574b990bcc26f5, 5.0—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/d2639ffdcad463b358b6bef8645ff81715daffcb
git.kernel.orghttps://git.kernel.org/stable/c/58f69684ba03e5b0e0a3ae844a845280c0f06309
git.kernel.orghttps://git.kernel.org/stable/c/717cf5ae52322ddbdf3ac2c584b34c5970b0d174
git.kernel.orghttps://git.kernel.org/stable/c/09d154990ca82d14aed2b72796f6c8845e2e605d
git.kernel.orghttps://git.kernel.org/stable/c/3ce3e45cc333da707d4d6eb433574b990bcc26f5

01 Record index

CVE-2021-47333

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-47333

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References