CVE-2026-53021
Published Jun 24, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: target: core: Fix integer overflow in UNMAP bounds check sbc_execute_unmap() checks LBA + range does not exceed the device capacity, but does not guard against LBA + range wrapping around on 64-bit overflow. Add an overflow check matching the pattern already used for WRITE_SAME in the same file.
EPSS — Exploit Prediction
0.0018
Probability of exploitation
0.07%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other References
https://git.kernel.org/stable/c/02115986d027ade793e7f6be87e91d6a796d0aa3
https://git.kernel.org/stable/c/2bf2d65f76697820dbc4227d13866293576dd90a
https://git.kernel.org/stable/c/2e1ed9a7b6ea5bfefb5d80a02b1c71c7dee1f0dd
https://git.kernel.org/stable/c/3facdecc3fcf115cc4f9b3d8f118d6705e2456a8
https://git.kernel.org/stable/c/51075df70c46e60a9773f2dcd28299e40dac36fb
https://git.kernel.org/stable/c/5efc3ef4758f8d98c257419fa21daca3227de61a
https://git.kernel.org/stable/c/c08ab702c4699c6efb9d60bdb15b73e7a627ee7e
https://git.kernel.org/stable/c/d7aef29573c7c5cdb2dfad939253287a6329c2a4
Frequently Asked Questions
What is CVE-2026-53021? +
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: core: Fix integer overflow in UNMAP bounds check
sbc_execute_unmap() checks LBA + range does not exceed the device capacity,
but does not guard against LBA + range wrapping around on 64-bit overflow.
Add an overflow check matching the pattern already used for WRITE_SAME in
the same file.
How do I check if I'm vulnerable to CVE-2026-53021? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.