Status: UPDATED | Advisory ID: CVE-2026-97990
| CVE | CVE-2026-97990 |
| CVSS Score / Version | 7.5 (High) / CVSS v3.1 |
| Updated | 2026-10-03 |
| CVSS Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:H |
| CVSS Prose | attack vector is local; attack complexity is high; privileges required is low; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is none; availability impact is high. |
| Affected products | Linux Linux |
| Vendor | Product | Affected Versions | Patch Status |
|---|---|---|---|
| Linux | Linux |
| Subsystems | General OT |
| Sectors | Multiple |
In the Linux kernel, the following vulnerability has been resolved:
vdpa_sim_net: check TX pull result before RX copy
vringh_iov_pull_iotlb() returns a signed byte count. A failed TX pull is
currently added to the unsigned byte counter and then passed as a size_t
length to receive_filter() and vringh_iov_push_iotlb(). A negative error
can therefore become a large length in the RX path.
Handle non-positive pull results before every length use. Count the TX
error and complete the consumed TX descriptor with zero bytes.
I found this bug myself, though the patch was written with AI assistance. (NVD)
Monitor Linux's web page for any future patch releases.
| Source | Reference |
|---|---|
| NVD | https://nvd.nist.gov/vuln/detail/CVE-2026-97990 |
| CVE | https://www.cve.org/CVERecord?id=CVE-2026-97990 |