CVE-2021-47432

lib/generic-radix-tree.c: Don't overflow in peek()

At a glance

Severity: MEDIUM 5.5
EPSS: EPSS 0.25 % · percentile 17 (2026-10-27)
State: PUBLISHED
Published: 2024-05-21
Updated: 2026-05-11
Assigner: Linux
NVD status: Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: lib/generic-radix-tree.c: Don't overflow in peek() When we started spreading new inode numbers throughout most of the 64 bit inode space, that triggered some corner case bugs, in particular some integer overflows related to the radix tree code. Oops.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Weaknesses (CWE)

CWE-190

European references

ENISA EUVD · EUVD-2021-34437
GCVE · GCVE-0-2021-47432

CERT-FR advisories

CERTFR-2026-AVI-1165 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-0326 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
CERTFR-2026-AVI-0316 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
CERTFR-2024-AVI-0821 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
CERTFR-2024-AVI-0717 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
CERTFR-2024-AVI-0693 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
CERTFR-2024-AVI-0632 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
CERTFR-2024-AVI-0578 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* < 6.1.64
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.2 < 6.5.13
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.6 < 6.6.3

Affected products

Product	Versions
Linux · Linux	affected ba20ba2e3743bac786dff777954c11930256075e < 784d01f9bbc282abb0c5ade5beb98a87f50343ac ; affected ba20ba2e3743bac786dff777954c11930256075e < ec298b958cb0c40d70c68079da933c8f31c5134c ; affected ba20ba2e3743bac786dff777954c11930256075e < aa7f1827953100cdde0795289a80c6c077bfe437 ; affected ba20ba2e3743bac786dff777954c11930256075e < 9492261ff2460252cf2d8de89cdf854c7e2b28a0
Linux · Linux	affected 5.1 ; unaffected 0 < 5.1 ; unaffected 6.1.64 ≤ 6.1.* ; unaffected 6.5.13 ≤ 6.5.* ; unaffected 6.6.3 ≤ 6.6.* ; unaffected 6.7 ≤ *

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD