CVE-2022-49871 is a memory leak vulnerability in the Linux kernel's TUN (network tunnel) driver. Specifically, it affects the napi_get_frags function, leading to unreferenced memory objects when the NAPI (New API) receive list is not properly cleared. This vulnerability impacts Linux kernel versions. Rated as Medium severity (CVSS 5.5), this vulnerability has a local attack vector (AV:L) and low attack complexity (AC:L), meaning an attacker would need local access to exploit it. The primary impact is high availability degradation (A:H) due to memory exhaustion, with no impact on confidentiality or integrity. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal, indicating a low level of public awareness or concern.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.15, < 4.19.267CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 4.20, < 5.4.225CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.5, < 5.10.155CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.11, < 5.15.79CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.16, < 6.0.9CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.