CVE-2024-41086

bcachefs: Fix sb_field_downgrade validation

MEDIUM
5.5
CVSS Score
Published: July 29, 2024 at 03:48 PM UTC
Updated: August 5, 2026 at 12:04 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: bcachefs: Fix sb_field_downgrade validation - bch2_sb_downgrade_validate() wasn't checking for a downgrade entry extending past the end of the superblock section - for_each_downgrade_entry() is used in to_text() and needs to work on malformed input; it also was missing a check for a field extending past the end of the section

Affected

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

6.7 ≤ v < 6.106.7 ≤ v < 6.9.86.7.1 ≤ v < 6.9.86.784f1638795da1ff2084597de4251e9054f1ad728
Vendor states this is fixed in 692aa7a54b2b28d59f24b3bf8250837805484b99 (fixed)
Vendor states this is fixed in bf920ed92ef24dcd6970c88881cd4700b3acf05b (fixed)
Vendor states this is fixed in 6.10 (unaffected)
Vendor states this is fixed in 6.7 (unaffected)
Vendor states this is fixed in 6.9.8 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/692aa7a54b2b28d59f24b3bf8250837805484b99
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bf920ed92ef24dcd6970c88881cd4700b3acf05b

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

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

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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