CVE-2026-46103can: ucan: fix devres lifetime
- 5.5MediumCVSS base score
- 0.11%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: can: ucan: fix devres lifetime USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes). Fix the control message buffer lifetime so that it is released on driver unbind.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.11% · top 98% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 – < a90f0815aaa9c629ac4750e7c71c357dd7f231d7
- affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 – < cb2e41e87a2893345859440017e7178bf7a4c70d
- affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 – < 3df5b9110ac08f67ccfe382fc172bfee95688eec
- affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 – < 4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705
- affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 – < 10b7b676b78a7bd888d19729b459aad7fc1f428b
- affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 – < c524c124e3094d2de12235a513854c03d06a2b58
- affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 – < c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae
- affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 – < fed4626501c871890da287bec62a96e52da1af89
- affected 4.19
- unaffected < 4.19
- unaffected 5.10.259 – ≤ 5.10.*
- unaffected 5.15.210 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.86 – ≤ 6.12.*
- unaffected 6.18.27 – ≤ 6.18.*
- unaffected 7.0.4 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References8
- https://git.kernel.org/stable/c/a90f0815aaa9c629ac4750e7c71c357dd7f231d7 (opens in a new tab)
- https://git.kernel.org/stable/c/cb2e41e87a2893345859440017e7178bf7a4c70d (opens in a new tab)
- https://git.kernel.org/stable/c/3df5b9110ac08f67ccfe382fc172bfee95688eec (opens in a new tab)
- https://git.kernel.org/stable/c/4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705 (opens in a new tab)
- https://git.kernel.org/stable/c/10b7b676b78a7bd888d19729b459aad7fc1f428b (opens in a new tab)
- https://git.kernel.org/stable/c/c524c124e3094d2de12235a513854c03d06a2b58 (opens in a new tab)
- https://git.kernel.org/stable/c/c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae (opens in a new tab)
- https://git.kernel.org/stable/c/fed4626501c871890da287bec62a96e52da1af89 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32486 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46103)Record last updated .