CVEvulnerability

CVE-2021-47159

5.5 MEDIUM Published 2024-03-25 Modified 2026-08-04 Official page ↗
Status
Modified
Published
2024-03-25
Last modified
2026-08-04
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-835

Description

In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix a crash if ->get_sset_count() fails If ds->ops->get_sset_count() fails then it "count" is a negative error code such as -EOPNOTSUPP. Because "i" is an unsigned int, the negative error code is type promoted to a very high value and the loop will corrupt memory until the system crashes. Fix this by checking for error codes and changing the type of "i" to just int.

Affected configurations

• linux linux kernel (>= 4.7 < 4.19.193) • linux linux kernel (>= 4.20 < 5.4.124) • linux linux kernel (>= 5.5 < 5.10.42) • linux linux kernel (>= 5.11 < 5.12.9) • linux linux kernel 5.13

Related

Weakness · CWE (1)

  • CWE-835 Loop with Unreachable Exit Condition weakness

References