can: peak_usb: peak_usb_start(): fix double free of transfer buffer on URB submit error (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.13 % · percentile 3 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: peak_usb_start(): fix double free of transfer buffer on URB submit error In peak_usb_start(), each RX URB transfer buffer is allocated with kmalloc() and the URB is flagged URB_FREE_BUFFER so that the final usb_free_urb() also frees the transfer buffer. If usb_submit_urb() fails, the error path frees the buffer explicitly with kfree(buf) and then calls usb_free_urb(urb). Because URB_FREE_BUFFER is set, usb_free_urb() -> urb_destroy() frees the same buffer a second time, a double free of the transfer buffer. BUG: KASAN: double-free in usb_free_urb.part.0+0x91/0xb0 Free of addr ffff8881069ccb80 by task trigger.sh/285 Call Trace: kfree+0x113/0x3c0 usb_free_urb.part.0+0x91/0xb0 Drop the redundant kfree(buf); usb_free_urb() already releases the transfer buffer. This mirrors commit 03819abbeb11 ("net: usb: lan78xx: Fix double free issue with interrupt buffer allocation").
References
- https://git.kernel.org/stable/c/914c3b8fa175acf8476ad31cf04e308638e3578e
- https://git.kernel.org/stable/c/5f2fa5840c34d3a558c57855781be75e03bef752
- https://git.kernel.org/stable/c/b9088d581fff971a7eb1628f8dcc30df6cfef4dc
- https://git.kernel.org/stable/c/525640b93d3e5f82f4ebea4730f4e0cf799522ba
- https://git.kernel.org/stable/c/4bb3325075138dd5346b71589a959878b564dc0b
- https://git.kernel.org/stable/c/92d0de80ca2223b9c7da78020155b6cb27824cc0
- https://git.kernel.org/stable/c/dfb17bf04a764462000f11258a7c06aa92d1f261
- https://git.kernel.org/stable/c/9b3d5a6d952c38bbcf07f903cbeadefdb56b9bc9
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| 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 | Linux |
| 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 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-59649
- GCVE · GCVE-0-2026-74456
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1232 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1163 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1090 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d < 914c3b8fa175acf8476ad31cf04e308638e3578e ; affected bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d < 5f2fa5840c34d3a558c57855781be75e03bef752 ; affected bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d < b9088d581fff971a7eb1628f8dcc30df6cfef4dc ; affected bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d < 525640b93d3e5f82f4ebea4730f4e0cf799522ba ; affected bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d < 4bb3325075138dd5346b71589a959878b564dc0b ; affected bb4785551f64e18b2c8bb15a3bd2b22f5ebf624d < 92d0de80ca2223b9c7da78020155b6cb27824cc0 |
| Linux · Linux | affected 3.4 ; unaffected 0 < 3.4 ; unaffected 5.10.265 ≤ 5.10.* ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.1.183 ≤ 6.1.* ; unaffected 6.6.151 ≤ 6.6.* |
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 |