CVE-2021-47002SUNRPC: Fix null pointer dereference in svc_rqst_free()
- 5.5MediumCVSS base score
- 0.24%Exploitation in 30 daysEPSS · top 85% 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: SUNRPC: Fix null pointer dereference in svc_rqst_free() When alloc_pages_node() returns null in svc_rqst_alloc(), the null rq_scratch_page pointer will be dereferenced when calling put_page() in svc_rqst_free(). Fix it by adding a null check. Addresses-Coverity: ("Dereference after null check")
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 3 years later
· 3 years 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 · Modified | 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)
- 0.24% · top 85% of all CVEs (15 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 79e4e0d489c8e72b9efa388e504a036eec1550c6 – < 3de81c1e84bf84803308da3272a829a7655c5336
- affected 5191955d6fc65e6d4efe8f4f10a6028298f57281 – < 1e10f58f1c9a6b667b045513c7a4e6111c24fe7c
- affected 5191955d6fc65e6d4efe8f4f10a6028298f57281 – < c664aaec9aee544538a78ba4893a44bc73a6d742
- affected 5191955d6fc65e6d4efe8f4f10a6028298f57281 – < b9f83ffaa0c096b4c832a43964fe6bff3acffe10
- affected 5.10.220 – < 5.10.221
- affected 5.11
- unaffected < 5.11
- unaffected 5.10.221 – ≤ 5.10.*
- unaffected 5.11.22 – ≤ 5.11.*
- unaffected 5.12.5 – ≤ 5.12.*
- unaffected 5.13 – ≤ *
References
References5
- https://git.kernel.org/stable/c/3de81c1e84bf84803308da3272a829a7655c5336 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/1e10f58f1c9a6b667b045513c7a4e6111c24fe7c (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/c664aaec9aee544538a78ba4893a44bc73a6d742 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/b9f83ffaa0c096b4c832a43964fe6bff3acffe10 (opens in a new tab)x_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html (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-2021-33650 (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-2021-47002)Record last updated .