net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.79 % · percentile 56 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send In emac_mac_tx_buf_send, it calls emac_tx_fill_tpd(..,skb,..). If some error happens in emac_tx_fill_tpd(), the skb will be freed via dev_kfree_skb(skb) in error branch of emac_tx_fill_tpd(). But the freed skb is still used via skb->len by netdev_sent_queue(,skb->len). As i observed that emac_tx_fill_tpd() haven't modified the value of skb->len, thus my patch assigns skb->len to 'len' before the possible free and use 'len' instead of skb->len later.
Weaknesses (CWE)
- CWE-416 — Use After Free
References
- https://git.kernel.org/stable/c/c7f75d11fe72913d2619f97b2334b083cd7bb955
- https://git.kernel.org/stable/c/dc1b438a35773d030be0ee80d9c635c3e558a322
- https://git.kernel.org/stable/c/16d8c44be52e3650917736d45f5904384a9da834
- https://git.kernel.org/stable/c/55fcdd1258faaecca74b91b88cc0921f9edd775d
- https://git.kernel.org/stable/c/9dc373f74097edd0e35f3393d6248eda8d1ba99d
- https://git.kernel.org/stable/c/8c06f34785068b87e2b560534c77c163d6c6dca7
- https://git.kernel.org/stable/c/e407495ba6788a67d1bd41714158c079e340879b
- https://git.kernel.org/stable/c/6d72e7c767acbbdd44ebc7d89c6690b405b32b57
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-33661
- GCVE · GCVE-0-2021-47013
CERT-FR advisories
- CERTFR-2024-AVI-0741 — Multiples vulnérabilités dans Juniper Secure Analytics · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0646 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0497 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0471 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0457 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0363 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0265 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0242 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.9 < 4.9.269cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.10 < 4.14.233cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.191cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.119cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.37cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.11.21cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.12 < 5.12.4
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected b9b17debc69d27cd55e21ee51a5ba7fc50a426cf < c7f75d11fe72913d2619f97b2334b083cd7bb955 ; affected b9b17debc69d27cd55e21ee51a5ba7fc50a426cf < dc1b438a35773d030be0ee80d9c635c3e558a322 ; affected b9b17debc69d27cd55e21ee51a5ba7fc50a426cf < 16d8c44be52e3650917736d45f5904384a9da834 ; affected b9b17debc69d27cd55e21ee51a5ba7fc50a426cf < 55fcdd1258faaecca74b91b88cc0921f9edd775d ; affected b9b17debc69d27cd55e21ee51a5ba7fc50a426cf < 9dc373f74097edd0e35f3393d6248eda8d1ba99d ; affected b9b17debc69d27cd55e21ee51a5ba7fc50a426cf < 8c06f34785068b87e2b560534c77c163d6c6dca7 |
| Linux · Linux | affected 4.9 ; unaffected 0 < 4.9 ; unaffected 4.9.269 ≤ 4.9.* ; unaffected 4.14.233 ≤ 4.14.* ; unaffected 4.19.191 ≤ 4.19.* ; unaffected 5.4.119 ≤ 5.4.* |
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 |