CVE-2026-99266
Published Nov 3, 2026
CVSS n/a
EPSS n/a
KEV · Not listed
Description
This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Affected Products
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CVE record
No data
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NVD configurations
No data
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Red Hat packages
No data
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OpenCVE enrichment
No data
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No data available yet.
Remediation
Tracking
Advisories
Metrics
No CVSS v4.0
No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
No EPSS score available.
Key SSVC decision points have not yet been added.
References
No reference.
History
Nov 4, 2026 6:30 PM
Description updated. Title updated. Affected versions updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix buffer offsets in areas above 4GB io_zcrx_queue_cqe() computes the offset of the buffer in its area from net_iov_idx(), which is an unsigned int, so the shift is done in 32 bits and only the result is widened to the u64 that goes into the CQE. An area can be up to 1TB in size. For every niov beyond the first 4GB the CQE points the application at a buffer 4GB, or a multiple of that, below the one which has the data. It reads the wrong data, and then returns a buffer it doesn't own via the refill queue while the real one is never given back. | This CVE ID has been rejected or withdrawn by its CVE Numbering Authority. |
| Title | io_uring/zcrx: fix buffer offsets in areas above 4GB | |
| CPEs |
Nov 3, 2026 7:30 PM
Added references
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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Nov 3, 2026 3:00 PM
First appearance in the feed. Affected vendors updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Linux linux
|
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| Vendors & Products |
Linux linux
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Nov 3, 2026 2:15 PM
Weaknesses updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-125 CWE-416 |
Nov 3, 2026 12:00 PM
Description updated. Title updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix buffer offsets in areas above 4GB io_zcrx_queue_cqe() computes the offset of the buffer in its area from net_iov_idx(), which is an unsigned int, so the shift is done in 32 bits and only the result is widened to the u64 that goes into the CQE. An area can be up to 1TB in size. For every niov beyond the first 4GB the CQE points the application at a buffer 4GB, or a multiple of that, below the one which has the data. It reads the wrong data, and then returns a buffer it doesn't own via the refill queue while the real one is never given back. | |
| Title | io_uring/zcrx: fix buffer offsets in areas above 4GB | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
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