Description (CNA)
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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 86ccbb4d2a2af4109430df518c995a4f7d14dfd2 before 4a4ceb2b990771c374d85d496a1a45255dde48e3; affected 86ccbb4d2a2af4109430df518c995a4f7d14dfd2 before 987b5df1d10355d377315a26e7fb6c72ded83c9f; affected 86ccbb4d2a2af4109430df518c995a4f7d14dfd2 before f9f15de85d74e7eef021af059ca53a15f041cdd8 |
| Linux / Linux | affected 5.16; unaffected 0 before 5.16; unaffected 5.16.19 through 5.16.*; unaffected 5.17.2 through 5.17.*; unaffected 5.18 through * |
CWE
No CWE identifiers supplied.