5.5

CVE-2021-47002: SUNRPC: Fix null pointer dereference in svc_rqst_free()

Modified
AliasesUBUNTU-CVE-2021-47002
Published 28-02-2024Last modified 14-10-2026

Vulnerability summary

CVE-2021-47002 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.24%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 28-02-2024
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

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")

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.24% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu62 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ 79e4e0d489c8e72b9efa388e504a036eec1550c6, < 3de81c1e84bf84803308da3272a829a7655c5336 | ≥ 5191955d6fc65e6d4efe8f4f10a6028298f57281, < 1e10f58f1c9a6b667b045513c7a4e6111c24fe7c | ≥ 5191955d6fc65e6d4efe8f4f10a6028298f57281, < c664aaec9aee544538a78ba4893a44bc73a6d742 | ≥ 5191955d6fc65e6d4efe8f4f10a6028298f57281, < b9f83ffaa0c096b4c832a43964fe6bff3acffe10 | ≥ 5.10.220, < 5.10.221 | 5.11
  • linux_kernel< 5.10.221 | ≥ 5.11, < 5.11.22 | ≥ 5.12, < 5.12.5

2 vendors · 64 products

References

8 links