7.8

CVE-2020-35519: linux linux_kernel Out-of-bounds Read

Modified
AliasesUBUNTU-CVE-2020-35519DEBIAN-CVE-2020-35519
Published 06-05-2021Last modified 04-08-2024

Vulnerability summary

CVE-2020-35519 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in linux linux_kernel. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 35.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.41%
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 20 · Related 20
OPENSUSE-SU-2021:0532-1OPENSUSE-SU-2021:0758-1OPENSUSE-SU-2021:1975-1OPENSUSE-SU-2021:1977-1SUSE-SU-2021:1175-1SUSE-SU-2021:1176-1

Timeline

  1. 06-05-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An out-of-bounds (OOB) memory access flaw was found in x25_bind in net/x25/af_x25.c in the Linux kernel version v5.12-rc5. A bounds check failure allows a local attacker with a user account on the system to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

35%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.41% 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.

Ubuntu47 products
  • linuxAll versions (No fix recorded) | < 4.4.0-203.235 | < 4.15.0-136.140 | < 5.4.0-66.74
  • linux-aws< 4.4.0-1086.90 | < 4.4.0-1122.136 | < 4.15.0-1094.101 | < 5.4.0-1038.40
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.3All versions (No fix recorded)
  • linux-aws-5.4< 5.4.0-1038.40~18.04.1
Netapp10 products
Debian1 product
  • linux< 5.9.15-1
Linux1 product
  • linux_kernel≥ 2.6.12, < 4.4.248 | ≥ 4.5, < 4.9.248 | ≥ 4.10, < 4.14.211 | ≥ 4.15, < 4.19.162 | ≥ 4.20, < 5.4.82 | ≥ 5.5, < 5.9.13

4 vendors · 59 products

References

8 links