5.5

CVE-2021-47601: tee: amdtee: fix an IS_ERR() vs NULL bug

Modified
AliasesUBUNTU-CVE-2021-47601DEBIAN-CVE-2021-47601
Published 19-06-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-47601 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 15% 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

Advisory lineage

Upstream 0 · Downstream 5 · Related 5
SUSE-SU-2024:2372-1SUSE-SU-2024:2394-1SUSE-SU-2024:2902-1SUSE-SU-2024:2929-1SUSE-SU-2024:2939-1

Timeline

  1. 19-06-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: tee: amdtee: fix an IS_ERR() vs NULL bug The __get_free_pages() function does not return error pointers it returns NULL so fix this condition to avoid a NULL dereference.

CVSS metrics

3 scores · 3 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≥ 757cc3e9ff1d72d014096399d6e2bf03974d9da1, < 640e28d618e82be78fb43b4bf5113bc90d6aa442 | ≥ 757cc3e9ff1d72d014096399d6e2bf03974d9da1, < 832f3655c6138c23576ed268e31cc76e0f05f2b1 | ≥ 757cc3e9ff1d72d014096399d6e2bf03974d9da1, < 9d7482771fac8d8e38e763263f2ca0ca12dd22c6 | 5.6
  • linux_kernel≥ 5.6, < 5.10.88 | ≥ 5.11, < 5.15.11
Debian1 product
  • linux< 5.15.15-1

3 vendors · 65 products

References

7 links