Description
In the Linux kernel, the following vulnerability has been resolved:
block: fix memory leak in __blkdev_issue_zero_pages
Move the fatal signal check before bio_alloc() to prevent a memory leak when BLKDEV_ZERO_KILLABLE is set and a fatal signal is pending.
Previously, the bio was allocated before checking for a fatal signal. If a signal was pending, the code would break out of the loop without freeing or chaining the just-allocated bio, causing a memory leak.
This matches the pattern already used in __blkdev_issue_write_zeroes() where the signal check precedes the allocation.
Metrics
No CVSS score has been published yet.
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= bf86bcdb40123ee99669ee91b67e023669433a1a, < 453e4b0c84d0db1454ff0adf655d91179e6fca3a; >= bf86bcdb40123ee99669ee91b67e023669433a1a, < 7957635c679e8a01147163a3a4a1f16e1210fa03; >= bf86bcdb40123ee99669ee91b67e023669433a1a, < 7193407bc4457212fa38ec3aff9c640e63a8dbef; >= bf86bcdb40123ee99669ee91b67e023669433a1a, < f7e3f852a42d7cd8f1af2c330d9d153e30c8adcf |
| Linux | Linux | 6.11 |
References
Timeline
- Published
- Dec 24, 2025
- Last modified
- Oct 19, 2026
- NVD status
- Deferred