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Vulnerability · Published May 6, 2021 · Assigned by redhat

CVE-2020-35519

High 7.8

In plain English

A high-severity out-of-bounds read in kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.4%top 64.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.9.15-1DEBIAN-CVE-2020-35519
Debian:13linux5.9.15-1DEBIAN-CVE-2020-35519
Debian:14linux5.9.15-1DEBIAN-CVE-2020-35519
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2020-35519
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2020-35519
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2020-35519

Affected products (as reported)

VendorProductVersions
n/a kernel v5.12-rc5

Weakness: CWE-125

References