CVE-2025-68348block: fix memory leak in __blkdev_issue_zero_pages
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- May 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from bf86bcdb40123ee99669ee91b67e023669433a1a before 453e4b0c84d0db1454ff0adf655d91179e6fca3a; from bf86bcdb40123ee99669ee91b67e023669433a1a before 7957635c679e8a01147163a3a4a1f16e1210fa03; from bf86bcdb40123ee99669ee91b67e023669433a1a before 7193407bc4457212fa38ec3aff9c640e63a8dbef; from bf86bcdb40123ee99669ee91b67e023669433a1a before f7e3f852a42d7cd8f1af2c330d9d153e30c8adcf | CNA record |
References
- https://git.kernel.org/stable/c/453e4b0c84d0db1454ff0adf655d91179e6fca3a
- https://git.kernel.org/stable/c/7957635c679e8a01147163a3a4a1f16e1210fa03
- https://git.kernel.org/stable/c/7193407bc4457212fa38ec3aff9c640e63a8dbef
- https://git.kernel.org/stable/c/f7e3f852a42d7cd8f1af2c330d9d153e30c8adcf
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.