vdpa_sim_net: check TX pull result before RX copy (Linux Linux)
En bref
- Source
- NVD
- EPSS
- EPSS 0.12 % · centile 2 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Received
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Description
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.
Références
- https://git.kernel.org/stable/c/1b803d382cde6d85755b363f22010208a04ba40a
- https://git.kernel.org/stable/c/c001abcde865b74231da8f1412c3217dbf66781e
- https://git.kernel.org/stable/c/3af20238a09ca180d66623e3bed16b64e9975f39
- https://git.kernel.org/stable/c/2bbf1c1f69991e28787e02b0a2f826289d5fc730
- https://git.kernel.org/stable/c/0d195797a80b77f2ec56718cd26d3ee65d0093e8
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:H | Linux |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-86644
- GCVE · GCVE-0-2026-97990
Avis du CERT-FR
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected cfe226892913a448e83e7a19db93862baa3cb99c < 1b803d382cde6d85755b363f22010208a04ba40a ; affected cfe226892913a448e83e7a19db93862baa3cb99c < c001abcde865b74231da8f1412c3217dbf66781e ; affected cfe226892913a448e83e7a19db93862baa3cb99c < 3af20238a09ca180d66623e3bed16b64e9975f39 ; affected cfe226892913a448e83e7a19db93862baa3cb99c < 2bbf1c1f69991e28787e02b0a2f826289d5fc730 ; affected cfe226892913a448e83e7a19db93862baa3cb99c < 0d195797a80b77f2ec56718cd26d3ee65d0093e8 |
| Linux · Linux | affected 5.19 ; unaffected 0 < 5.19 ; unaffected 6.6.158 ≤ 6.6.* ; unaffected 6.12.111 ≤ 6.12.* ; unaffected 6.18.53 ≤ 6.18.* ; unaffected 7.2.7 ≤ 7.2.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |