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CVE-2022-49921

nvd nist
Published: May 1, 2025Modified: Jun 17, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: NVD

Description

In the Linux kernel, the following vulnerability has been resolved: net: sched: Fix use after free in red_enqueue() We can't use "skb" again after passing it to qdisc_enqueue(). This is basically identical to commit 2f09707d0c97 ("sch_sfb: Also store skb len before calling child enqueue").

Affected (11)

Products: Linux: Linux Kernel
Linux
1 product
Linux Kernel
Configuration A
11 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
4.10 ≤ version < 4.14.299
Linux Kernel
4.15 ≤ version < 4.19.265
Linux Kernel
4.20 ≤ version < 5.4.224
Linux Kernel
4.4.163 ≤ version < 4.5
Linux Kernel
4.7 ≤ version < 4.9.333
Linux Kernel
5.11 ≤ version < 5.15.78
Linux Kernel
5.16 ≤ version < 6.0.8
Linux Kernel
5.5 ≤ version < 5.10.154
Linux Kernel
Version 6.1 rc1
Linux Kernel
Version 6.1 rc2
Linux Kernel
Version 6.1 rc3

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (8)

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch

Timeline

No history available yet.