CVE-2022-50709: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2022-50709DEBIAN-CVE-2022-50709
Published 24-12-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2022-50709 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11.2% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 7
SUSE-SU-2026:0263-1SUSE-SU-2026:0317-1SUSE-SU-2026:0350-1SUSE-SU-2026:0369-1SUSE-SU-2026:0411-1SUSE-SU-2026:0473-1

Timeline

  1. 24-12-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg() syzbot is reporting uninit value at ath9k_htc_rx_msg() [1], for ioctl(USB_RAW_IOCTL_EP_WRITE) can call ath9k_hif_usb_rx_stream() with pkt_len = 0 but ath9k_hif_usb_rx_stream() uses __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC) based on an assumption that pkt_len is valid. As a result, ath9k_hif_usb_rx_stream() allocates skb with uninitialized memory and ath9k_htc_rx_msg() is reading from uninitialized memory. Since bytes accessed by ath9k_htc_rx_msg() is not known until ath9k_htc_rx_msg() is called, it would be difficult to check minimal valid pkt_len at "if (pkt_len > 2 * MAX_RX_BUF_SIZE) {" line in ath9k_hif_usb_rx_stream(). We have two choices. One is to workaround by adding __GFP_ZERO so that ath9k_htc_rx_msg() sees 0 if pkt_len is invalid. The other is to let ath9k_htc_rx_msg() validate pkt_len before accessing. This patch chose the latter. Note that I'm not sure threshold condition is correct, for I can't find details on possible packet length used by this protocol.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

0.00 pp

From 0.21% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu121 products
  • linuxAll versions (No fix recorded) | < 4.15.0-204.215 | < 5.4.0-139.156 | < 5.15.0-60.66
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1150.163 | < 5.4.0-1096.104 | < 5.15.0-1030.34
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.0.3-1
Linux1 product
  • linux≥ fb9987d0f748c983bb795a86f47522313f701a08, < f3d2a3b7e290d0bdbddfcee5a6c3d922e2b7e02a | ≥ fb9987d0f748c983bb795a86f47522313f701a08, < 84242f15f911f34aec9b22f99d1e9bff19723dbe | ≥ fb9987d0f748c983bb795a86f47522313f701a08, < 2c485f4f2a64258acc5228e78ffb828c68d9e770 | ≥ fb9987d0f748c983bb795a86f47522313f701a08, < 9661724f6206bd606ecf13acada676a9975d230b | ≥ fb9987d0f748c983bb795a86f47522313f701a08, < b1b4144508adfc585e43856b31baaf9008a3beb4 | ≥ fb9987d0f748c983bb795a86f47522313f701a08, < 0d2649b288b7b9484e3d4380c0d6c4720a17e473 | ≥ fb9987d0f748c983bb795a86f47522313f701a08, < 4891a50f5ed8bfcb8f2a4b816b0676f398687783 | ≥ fb9987d0f748c983bb795a86f47522313f701a08, < b383e8abed41cc6ff1a3b34de75df9397fa4878c | 2.6.35

3 vendors · 123 products

References

11 links
Show all 11 references