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CVE-2022-49199

RDMA/nldev: Prevent underflow in nldev_stat_set_counter_dynamic_doit()

MEDIUM
5.5
CVSS Score
Published: February 26, 2025 at 01:55 AM UTC
Updated: June 17, 2026 at 05:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/nldev: Prevent underflow in nldev_stat_set_counter_dynamic_doit() This code checks "index" for an upper bound but it does not check for negatives. Change the type to unsigned to prevent underflows.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.16 ≤ v < 5.16.195.16 ≤ v < 5.17.25.16 ≤ v < 5.185.17 ≤ v < 5.17.23c3c1f1416392382faa0238e76a70d7810aab2ef5.16
Vendor states this is fixed in 2a495ef04d5f42e6f00eb2bec1ee9075e3d5a771 (fixed)
Vendor states this is fixed in 87e0eacb176f9500c2063d140c0a1d7fa51ab8a5 (fixed)
Vendor states this is fixed in f6dd8669b8299a3a536cd92a7069152a7704da1d (fixed)
Vendor states this is fixed in 5.16 (unaffected)
Vendor states this is fixed in 5.16.19 (unaffected)
Vendor states this is fixed in 5.17.2 (unaffected)
Vendor states this is fixed in 5.18 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/2a495ef04d5f42e6f00eb2bec1ee9075e3d5a771
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/87e0eacb176f9500c2063d140c0a1d7fa51ab8a5
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f6dd8669b8299a3a536cd92a7069152a7704da1d

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-191

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