01 Record

CVE-2021-47483

regmap: Fix possible double-free in regcache_rbtree_exit()

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

regmap: Fix possible double-free in regcache_rbtree_exit()

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

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 13.8% 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

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

2024-05-22 08:19Z2 YR AGO

Last updated

2026-08-05 08:48Z1 MO AGO

Reserved

2024-05-22

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-415Double FreeVariant

Data version

5.2

Document digest

5eb53a17527a8558fbc6e3feef2afc005b8d2bba7f954da74450b48b629fb95e

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux3f4ff561bc88b074d5e868dde4012d89cbb06c87 to < e72dce9afbdbfa70d9b44f5908a50ff6c4858999, 3f4ff561bc88b074d5e868dde4012d89cbb06c87 to < fc081477b47dfc3a6cb50a96087fc29674013fc2, 3f4ff561bc88b074d5e868dde4012d89cbb06c87 to < 758ced2c3878ff789801e6fee808e185c5cf08d6, 3f4ff561bc88b074d5e868dde4012d89cbb06c87 to < 3dae1a4eced3ee733d7222e69b8a55caf2d61091, 3f4ff561bc88b074d5e868dde4012d89cbb06c87 to < 1cead23c1c0bc766dacb900a3b0269f651ad596f, 3f4ff561bc88b074d5e868dde4012d89cbb06c87 to < 36e911a16b377bde0ad91a8c679069d0d310b1a6, 3f4ff561bc88b074d5e868dde4012d89cbb06c87 to < 50cc1462a668dc62949a1127388bc3af785ce047, 3f4ff561bc88b074d5e868dde4012d89cbb06c87 to < 55e6d8037805b3400096d621091dfbf713f97e83, 3.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/e72dce9afbdbfa70d9b44f5908a50ff6c4858999
git.kernel.orghttps://git.kernel.org/stable/c/fc081477b47dfc3a6cb50a96087fc29674013fc2
git.kernel.orghttps://git.kernel.org/stable/c/758ced2c3878ff789801e6fee808e185c5cf08d6
git.kernel.orghttps://git.kernel.org/stable/c/3dae1a4eced3ee733d7222e69b8a55caf2d61091
git.kernel.orghttps://git.kernel.org/stable/c/1cead23c1c0bc766dacb900a3b0269f651ad596f
git.kernel.orghttps://git.kernel.org/stable/c/36e911a16b377bde0ad91a8c679069d0d310b1a6
git.kernel.orghttps://git.kernel.org/stable/c/50cc1462a668dc62949a1127388bc3af785ce047
git.kernel.orghttps://git.kernel.org/stable/c/55e6d8037805b3400096d621091dfbf713f97e83

01 Record index

CVE-2021-47483

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-47483

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References