Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: do not double complete bio on errors during compressed reads I hit some weird panics while fixing up the error handling from btrfs_lookup_bio_sums(). Turns out the compression path will complete the bio we use if we set up any of the compression bios and then return an error, and then btrfs_submit_data_bio() will also call bio_endio() on the bio. Fix this by making btrfs_submit_compressed_read() responsible for calling bio_endio() on the bio if there are any errors. Currently it was only doing it if we created the compression bios, otherwise it was depending on btrfs_submit_data_bio() to do the right thing. This creates the above problem, so fix up btrfs_submit_compressed_read() to always call bio_endio() in case of an error, and then simply return from btrfs_submit_data_bio() if we had to call btrfs_submit_compressed_read().
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.16, < 5.16.19 |
References
- https://git.kernel.org/stable/c/4a4ceb2b990771c374d85d496a1a45255dde48e3Patch
- https://git.kernel.org/stable/c/987b5df1d10355d377315a26e7fb6c72ded83c9fPatch
- https://git.kernel.org/stable/c/f9f15de85d74e7eef021af059ca53a15f041cdd8Patch
FAQ
What is CVE-2022-49167?
CVE-2022-49167 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: btrfs: do not double complete bio on errors during compressed reads I hit some weird panics while fixing up the error handling fro...
How severe is CVE-2022-49167?
CVE-2022-49167 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49167?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.