| ID |
CVE-2026-97990
|
| Sažetak |
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. |
| Reference |
|
| CVSS |
| Base: | 7.5 |
| Impact: | 5.8 |
| Exploitability: | 1.1 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| LOCAL |
HIGH |
LOW |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| HIGH |
NONE |
HIGH |
|
| CVSS vektor |
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:H |
| Zadnje važnije ažuriranje |
25-09-2026 - 15:18 |
| Objavljeno |
25-09-2026 - 11:17 |
