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CVE-2022-50709· NVD / CVE Program· CNA Linux

wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg()

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 0d2649b288b7b9484e3d4380c0d6c4720a17e473, 2c485f4f2a64258acc5228e78ffb828c68d9e770, 4891a50f5ed8bfcb8f2a4b816b0676f398687783.

Low priority for now. Upgrade to Linux Linux 0d2649b288b7b9484e3d4380c0d6c4720a17e473, 2c485f4f2a64258acc5228e78ffb828c68d9e770, 4891a50f5ed8bfcb8f2a4b816b0676f398687783 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Dec 24, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.35affected
    • fb9987d0f748c983bb795a86f47522313f701a08 and later · before f3d2a3b7e290d0bdbddfcee5a6c3d922e2b7e02aaffected · git
    • fb9987d0f748c983bb795a86f47522313f701a08 and later · before 84242f15f911f34aec9b22f99d1e9bff19723dbeaffected · git
    • fb9987d0f748c983bb795a86f47522313f701a08 and later · before 2c485f4f2a64258acc5228e78ffb828c68d9e770affected · git
    • fb9987d0f748c983bb795a86f47522313f701a08 and later · before 9661724f6206bd606ecf13acada676a9975d230baffected · git
    • fb9987d0f748c983bb795a86f47522313f701a08 and later · before b1b4144508adfc585e43856b31baaf9008a3beb4affected · git
    • fb9987d0f748c983bb795a86f47522313f701a08 and later · before 0d2649b288b7b9484e3d4380c0d6c4720a17e473affected · git
    • fb9987d0f748c983bb795a86f47522313f701a08 and later · before 4891a50f5ed8bfcb8f2a4b816b0676f398687783affected · git
    • fb9987d0f748c983bb795a86f47522313f701a08 and later · before b383e8abed41cc6ff1a3b34de75df9397fa4878caffected · git
    • before 2.6.35not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.3-16.0.3-1
SUSE:Linux Enterprise Live Patching 12 SP5kernel-defaultbefore 4.12.14-122.293.14.12.14-122.293.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_77before 1-8.3.11-8.3.1
SUSE:Linux Enterprise Micro 5.2kernel-defaultbefore 5.3.18-150300.59.232.15.3.18-150300.59.232.1
SUSE:Linux Enterprise Micro 5.2kernel-default-basebefore 5.3.18-150300.59.232.1.150300.18.138.15.3.18-150300.59.232.1.150300.18.138.1
SUSE:Linux Enterprise Micro 5.2kernel-rtbefore 5.3.18-150300.232.15.3.18-150300.232.1
SUSE:Linux Enterprise Micro 5.2kernel-source-rtbefore 5.3.18-150300.232.15.3.18-150300.232.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-sourcebefore 4.12.14-122.293.14.12.14-122.293.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-symsbefore 4.12.14-122.293.14.12.14-122.293.1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2022-50707Dec 24, 2025 · virtio-crypto: fix memory leak in virtio_crypto_alg_skcipher_close_session()
    0Monitor
  • ← EarlierCVE-2022-50708Dec 24, 2025 · HSI: ssi_protocol: fix potential resource leak in ssip_pn_open()
    0Monitor
  • Later →CVE-2022-50710Dec 24, 2025 · ice: set tx_tstamps when creating new Tx rings via ethtool
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux0d2649b288b7b9484e3d4380c0d6c4720a17e473Vendor (CNA)
Linux Linux2c485f4f2a64258acc5228e78ffb828c68d9e770Vendor (CNA)
Linux Linux4891a50f5ed8bfcb8f2a4b816b0676f398687783Vendor (CNA)
Linux Linux84242f15f911f34aec9b22f99d1e9bff19723dbeVendor (CNA)
Linux Linux9661724f6206bd606ecf13acada676a9975d230bVendor (CNA)
Linux Linuxb1b4144508adfc585e43856b31baaf9008a3beb4Vendor (CNA)
Linux Linuxb383e8abed41cc6ff1a3b34de75df9397fa4878cVendor (CNA)
Linux Linuxf3d2a3b7e290d0bdbddfcee5a6c3d922e2b7e02aVendor (CNA)
debian:linux6.0.3-1 · Debian:12Package registry (OSV)
suse:kernel-default5.3.18-150300.59.232.1 · SUSE:Linux Enterprise Micro 5.2Package registry (OSV)
suse:kernel-default-base5.3.18-150300.59.232.1.150300.18.138.1 · SUSE:Linux Enterprise Micro 5.2Package registry (OSV)
suse:kernel-rt5.3.18-150300.232.1 · SUSE:Linux Enterprise Micro 5.2Package registry (OSV)
suse:kernel-source4.12.14-122.293.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kernel-source-rt5.3.18-150300.232.1 · SUSE:Linux Enterprise Micro 5.2Package registry (OSV)
suse:kernel-syms4.12.14-122.293.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kgraft-patch-SLE12-SP5_Update_771-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records