Bug 2300454 (CVE-2024-41077) - CVE-2024-41077 kernel: null_blk: fix validation of block size
Summary: CVE-2024-41077 kernel: null_blk: fix validation of block size
Keywords:
Status: NEW
Alias: CVE-2024-41077
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: 2301643
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-07-29 15:50 UTC by OSIDB Bzimport
Modified: 2024-08-22 08:19 UTC (History)
5 users (show)

Fixed In Version: kernel 5.10.223, kernel 5.15.164, kernel 6.1.101, kernel 6.6.42, kernel 6.9.11, kernel 6.10
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Description OSIDB Bzimport 2024-07-29 15:50:56 UTC 
In the Linux kernel, the following vulnerability has been resolved:

null_blk: fix validation of block size

Block size should be between 512 and PAGE_SIZE and be a power of 2. The current
check does not validate this, so update the check.

Without this patch, null_blk would Oops due to a null pointer deref when
loaded with bs=1536 [1].


[axboe: remove unnecessary braces and != 0 check]
Comment 1 Mauro Matteo Cascella 2024-07-30 14:02:13 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024072910-CVE-2024-41077-9c88@gregkh/T
Comment 2 Mauro Matteo Cascella 2024-07-30 14:02:35 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301643]
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