CVE-2025-68348
block: fix memory leak in __blkdev_issue_zero_pages
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 24, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
bf86bcdb40123ee99669ee91b67e023669433a1a < 453e4b0c84d0db1454ff0adf655d91179e6fca3a bf86bcdb40123ee99669ee91b67e023669433a1a < 7957635c679e8a01147163a3a4a1f16e1210fa03 bf86bcdb40123ee99669ee91b67e023669433a1a < 7193407bc4457212fa38ec3aff9c640e63a8dbef bf86bcdb40123ee99669ee91b67e023669433a1a < f7e3f852a42d7cd8f1af2c330d9d153e30c8adcf
Linux / Linux
6.11
References
git.kernel.org: https://git.kernel.org/stable/c/453e4b0c84d0db1454ff0adf655d91179e6fca3a git.kernel.org: https://git.kernel.org/stable/c/7957635c679e8a01147163a3a4a1f16e1210fa03 git.kernel.org: https://git.kernel.org/stable/c/7193407bc4457212fa38ec3aff9c640e63a8dbef git.kernel.org: https://git.kernel.org/stable/c/f7e3f852a42d7cd8f1af2c330d9d153e30c8adcf