CVE-2024-41077: null_blk: fix validation of block size
First published: Mon Jul 29 2024(Updated: )
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]
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.10.223 | 5.10.223 |
| redhat/kernel | <5.15.164 | 5.15.164 |
| redhat/kernel | <6.1.101 | 6.1.101 |
| redhat/kernel | <6.6.42 | 6.6.42 |
| redhat/kernel | <6.9.11 | 6.9.11 |
| redhat/kernel | <6.10 | 6.10 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.112-1 6.11.7-1 6.11.9-1 |
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Reference Links
- https://git.kernel.org/stable/c/08f03186b96e25e3154916a2e70732557c770ea7
- https://git.kernel.org/stable/c/2772ed2fc075eef7df3789906fc9dae01e4e132e
- https://git.kernel.org/stable/c/9625afe1dd4a158a14bb50f81af9e2dac634c0b1
- https://git.kernel.org/stable/c/9b873bdaae64bddade9d8c6df23c8a31948d47d0
- https://git.kernel.org/stable/c/c462ecd659b5fce731f1d592285832fd6ad54053
- https://git.kernel.org/stable/c/f92409a9da02f27d05d713bff5f865e386cef9b3
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-41077
- https://nvd.nist.gov/vuln/detail/CVE-2024-41077
- https://launchpad.net/bugs/cve/CVE-2024-41077
- https://security-tracker.debian.org/tracker/CVE-2024-41077
- https://ubuntu.com/security/CVE-2024-41077
- https://git.kernel.org/linus/c462ecd659b5fce731f1d592285832fd6ad54053
- https://lore.kernel.org/linux-cve-announce/2024072910-CVE-2024-41077-9c88@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2301643
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2300454
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