CVE-2021-47403ipack: ipoctal: fix module reference leak
- 7.1HighCVSS base score
- 0.25%Exploitation in 30 daysEPSS · top 84% 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: ipack: ipoctal: fix module reference leak A reference to the carrier module was taken on every open but was only released once when the final reference to the tty struct was dropped. Fix this by taking the module reference and initialising the tty driver data when installing the tty.
Timeline
ID reserved
By Linux
Published
- 24 months later
· 24 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 |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.25% · top 84% of all CVEs (14 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: High 7.1.
Affected products
- affected 82a82340bab6c251e0705339f60763718eaa2a22 – < 31398849b84ebae0d43a1cf379cb9895597f221a
- affected 82a82340bab6c251e0705339f60763718eaa2a22 – < c0adb5a947dec6cff7050ec56d78ecd3916f9ce6
- affected 82a82340bab6c251e0705339f60763718eaa2a22 – < dde4c1429b97383689f755ce92b4ed1e84a9c92b
- affected 82a82340bab6c251e0705339f60763718eaa2a22 – < 9c5b77a7ffc983b2429ce158b50497c5d3c86a69
- affected 82a82340bab6c251e0705339f60763718eaa2a22 – < 3253c87e1e5bc0107aab773af2f135ebccf38666
- affected 82a82340bab6c251e0705339f60763718eaa2a22 – < 7cea848678470daadbfdaa6a112b823c290f900c
- affected 82a82340bab6c251e0705339f60763718eaa2a22 – < 811178f296b16af30264def74c8d2179a72d5562
- affected 82a82340bab6c251e0705339f60763718eaa2a22 – < bb8a4fcb2136508224c596a7e665bdba1d7c3c27
- affected 3.18
- unaffected < 3.18
- unaffected 4.4.286 – ≤ 4.4.*
- unaffected 4.9.285 – ≤ 4.9.*
- unaffected 4.14.249 – ≤ 4.14.*
- unaffected 4.19.209 – ≤ 4.19.*
- unaffected 5.4.151 – ≤ 5.4.*
- unaffected 5.10.71 – ≤ 5.10.*
- unaffected 5.14.10 – ≤ 5.14.*
- unaffected 5.15 – ≤ *
References
References8
- https://git.kernel.org/stable/c/31398849b84ebae0d43a1cf379cb9895597f221a (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/c0adb5a947dec6cff7050ec56d78ecd3916f9ce6 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/dde4c1429b97383689f755ce92b4ed1e84a9c92b (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/9c5b77a7ffc983b2429ce158b50497c5d3c86a69 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/3253c87e1e5bc0107aab773af2f135ebccf38666 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/7cea848678470daadbfdaa6a112b823c290f900c (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/811178f296b16af30264def74c8d2179a72d5562 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/bb8a4fcb2136508224c596a7e665bdba1d7c3c27 (opens in a new tab)x_transferred
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-2021-34408 (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-2021-47403)Record last updated .