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CVE-2021-47432

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

MEDIUM
5.5
CVSS Score
Published: May 21, 2024 at 03:30 PM UTC
Updated: June 17, 2026 at 04:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
v < 6.1.645.1 ≤ v < 6.1.645.1 ≤ v < 6.5.135.1 ≤ v < 6.6.35.1 ≤ v < 6.76.2 ≤ v < 6.5.136.6 ≤ v < 6.6.35.1ba20ba2e3743bac786dff777954c11930256075e
Vendor states this is fixed in 784d01f9bbc282abb0c5ade5beb98a87f50343ac (fixed)
Vendor states this is fixed in 9492261ff2460252cf2d8de89cdf854c7e2b28a0 (fixed)
Vendor states this is fixed in aa7f1827953100cdde0795289a80c6c077bfe437 (fixed)
Vendor states this is fixed in ec298b958cb0c40d70c68079da933c8f31c5134c (fixed)
Vendor states this is fixed in 5.1 (unaffected)
Vendor states this is fixed in 6.1.64 (unaffected)
Vendor states this is fixed in 6.5.13 (unaffected)
Vendor states this is fixed in 6.6.3 (unaffected)
Vendor states this is fixed in 6.7 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/784d01f9bbc282abb0c5ade5beb98a87f50343ac
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9492261ff2460252cf2d8de89cdf854c7e2b28a0
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/aa7f1827953100cdde0795289a80c6c077bfe437
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ec298b958cb0c40d70c68079da933c8f31c5134c

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-190

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