Bug 2300482 (CVE-2024-41086) - CVE-2024-41086 kernel: bcachefs: Fix sb_field_downgrade validation
Summary: CVE-2024-41086 kernel: bcachefs: Fix sb_field_downgrade validation
Keywords:
Status: NEW
Alias: CVE-2024-41086
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2301668
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-07-29 16:21 UTC by OSIDB Bzimport
Modified: 2024-10-08 16:24 UTC (History)
4 users (show)

Fixed In Version: kernel 6.9.8, kernel 6.10
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2024-07-29 16:21:10 UTC 
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
Comment 1 Mauro Matteo Cascella 2024-07-30 15:16:28 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024072951-CVE-2024-41086-0dba@gregkh/T
Comment 2 Mauro Matteo Cascella 2024-07-30 15:16:48 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301668]
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