CVE-2022-48747: block: Fix wrong offset in bio_truncate()
First published: Thu Jun 20 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: block: Fix wrong offset in bio_truncate() bio_truncate() clears the buffer outside of last block of bdev, however current bio_truncate() is using the wrong offset of page. So it can return the uninitialized data. This happened when both of truncated/corrupted FS and userspace (via bdev) are trying to read the last of bdev.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.4.176 | 5.4.176 |
| redhat/kernel | <5.10.96 | 5.10.96 |
| redhat/kernel | <5.15.19 | 5.15.19 |
| redhat/kernel | <5.16.5 | 5.16.5 |
| redhat/kernel | <5.17 | 5.17 |
| Linux Kernel | <5.4.176 | |
| Linux Kernel | >=5.5<5.10.96 | |
| Linux Kernel | >=5.11<5.15.19 | |
| Linux Kernel | >=5.16<5.16.5 | |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2022-48747
- https://lore.kernel.org/linux-cve-announce/2024062004-CVE-2022-48747-c63f@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:5102
- https://access.redhat.com/errata/RHSA-2024:5101
- https://bugzilla.redhat.com/show_bug.cgi?id=2293312
- https://git.kernel.org/stable/c/6cbf4c731d7812518cd857c2cfc3da9fd120f6ae
- https://git.kernel.org/stable/c/b63e120189fd92aff00096d11e2fc5253f60248b
- https://git.kernel.org/stable/c/4633a79ff8bc82770486a063a08b55e5162521d8
- https://git.kernel.org/stable/c/941d5180c430ce5b0f7a3622ef9b76077bfa3d82
- https://git.kernel.org/stable/c/3ee859e384d453d6ac68bfd5971f630d9fa46ad3
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2022-48747?
CVE-2022-48747 has been classified as having a moderate severity level.
How do I fix CVE-2022-48747?
To fix CVE-2022-48747, update your Linux kernel to version 5.4.176, 5.10.96, 5.15.19, 5.16.5, or 5.17.
What type of vulnerability is CVE-2022-48747?
CVE-2022-48747 is a buffer handling vulnerability within the Linux kernel.
What impact does CVE-2022-48747 have on my system?
CVE-2022-48747 can lead to the exposure of uninitialized data, potentially allowing attacks.
Which Linux distributions are affected by CVE-2022-48747?
CVE-2022-48747 affects Linux distributions that use the specified vulnerable kernel versions.
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