CVE-2026-53021
scsi: target: core: Fix integer overflow in UNMAP bounds check
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.
INFO
Published Date :
June 24, 2026, 5:17 p.m.
Last Modified :
July 15, 2026, 2:12 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel to the patched version.
- Apply the specific kernel patch for scsi: target: core.
- Verify the integrity of the UNMAP bounds check.
- Reboot the system after applying the patch.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53021.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53021 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53021
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53021 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53021 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Jul. 15, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-190 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.141 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.91 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.33 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.175 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.209 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.10 up to (excluding) 5.10.258 Added Reference Type kernel.org: https://git.kernel.org/stable/c/02115986d027ade793e7f6be87e91d6a796d0aa3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2bf2d65f76697820dbc4227d13866293576dd90a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2e1ed9a7b6ea5bfefb5d80a02b1c71c7dee1f0dd Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/3facdecc3fcf115cc4f9b3d8f118d6705e2456a8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/51075df70c46e60a9773f2dcd28299e40dac36fb Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5efc3ef4758f8d98c257419fa21daca3227de61a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c08ab702c4699c6efb9d60bdb15b73e7a627ee7e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d7aef29573c7c5cdb2dfad939253287a6329c2a4 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 24, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '86d7182985d25900929adce14fffd729cc8c6fb8', 'lessThan': 'c08ab702c4699c6efb9d60bdb15b73e7a627ee7e', 'versionType': 'git'}, {'status': 'affected', 'version': '86d7182985d25900929adce14fffd729cc8c6fb8', 'lessThan': '2e1ed9a7b6ea5bfefb5d80a02b1c71c7dee1f0dd', 'versionType': 'git'}, {'status': 'affected', 'version': '86d7182985d25900929adce14fffd729cc8c6fb8', 'lessThan': '5efc3ef4758f8d98c257419fa21daca3227de61a', 'versionType': 'git'}, {'status': 'affected', 'version': '86d7182985d25900929adce14fffd729cc8c6fb8', 'lessThan': 'd7aef29573c7c5cdb2dfad939253287a6329c2a4', 'versionType': 'git'}, {'status': 'affected', 'version': '86d7182985d25900929adce14fffd729cc8c6fb8', 'lessThan': '3facdecc3fcf115cc4f9b3d8f118d6705e2456a8', 'versionType': 'git'}, {'status': 'affected', 'version': '86d7182985d25900929adce14fffd729cc8c6fb8', 'lessThan': '51075df70c46e60a9773f2dcd28299e40dac36fb', 'versionType': 'git'}, {'status': 'affected', 'version': '86d7182985d25900929adce14fffd729cc8c6fb8', 'lessThan': '02115986d027ade793e7f6be87e91d6a796d0aa3', 'versionType': 'git'}, {'status': 'affected', 'version': '86d7182985d25900929adce14fffd729cc8c6fb8', 'lessThan': '2bf2d65f76697820dbc4227d13866293576dd90a', 'versionType': 'git'}], 'programFiles': ['drivers/target/target_core_sbc.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.258', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.209', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.175', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/target/target_core_sbc.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/02115986d027ade793e7f6be87e91d6a796d0aa3 Added Reference https://git.kernel.org/stable/c/2bf2d65f76697820dbc4227d13866293576dd90a Added Reference https://git.kernel.org/stable/c/2e1ed9a7b6ea5bfefb5d80a02b1c71c7dee1f0dd Added Reference https://git.kernel.org/stable/c/3facdecc3fcf115cc4f9b3d8f118d6705e2456a8 Added Reference https://git.kernel.org/stable/c/51075df70c46e60a9773f2dcd28299e40dac36fb Added Reference https://git.kernel.org/stable/c/5efc3ef4758f8d98c257419fa21daca3227de61a Added Reference https://git.kernel.org/stable/c/c08ab702c4699c6efb9d60bdb15b73e7a627ee7e Added Reference https://git.kernel.org/stable/c/d7aef29573c7c5cdb2dfad939253287a6329c2a4