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NVD / CVE Program· CNA Linux

CVE-2022-50740: wifi: ath9k: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs()

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: 0.28% (FIRST EPSS).
  • Fixed version: Linux Linux 08aa0537ec8cf29ceccae98acc1a534fc12598c1, 134ae5eba41294eff76e4be20d6001b8f0192207, 4.14.303.

Low priority for now. Upgrade to Linux Linux 08aa0537ec8cf29ceccae98acc1a534fc12598c1, 134ae5eba41294eff76e4be20d6001b8f0192207, 4.14.303 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: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs() Syzkaller reports a long-known leak of urbs in ath9k_hif_usb_dealloc_tx_urbs(). The cause of the leak is that usb_get_urb() is called but usb_free_urb() (or usb_put_urb()) is not called inside usb_kill_urb() as urb->dev or urb->ep fields have not been initialized and usb_kill_urb() returns immediately. The patch removes trying to kill urbs located in hif_dev->tx.tx_buf because hif_dev->tx.tx_buf is not supposed to contain urbs which are in pending state (the pending urbs are stored in hif_dev->tx.tx_pending). The tx.tx_lock is acquired so there should not be any changes in the list. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

—No exploit Fix available
Published
Dec 24, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 21th 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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  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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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

    • b92e116ae36f498858dbb18e29a066c3f5348965, 7f5972267295fe49f8da8eb42bc2eb3d140860c0, 2d72d5ce63c92f56b9f978e8befb5838144176b9, 5.10affected
    • 6f0706ef39fecc6bf56d67728fe0c94e26b43e9d and later · before 134ae5eba41294eff76e4be20d6001b8f0192207affected · git
    • 795d57a558d106b8a5bc2bd7aeaf707d9a099244 and later · before 472312fef2b9eccaa03bd59e0ab2527da945e736affected · git
    • df4318440c1568b7dedc5f7d4e617d0e297a1313 and later · before eddbb8f7620f9f8008b090a6e10c460074ca575aaffected · git
    • a9990ed2d7ca9339d37c7f67d6f5cb298c3f1b34 and later · before 9850791d389b342ae6e573fe8198db0b4d338352affected · git
    • 03fb92a432ea5abe5909bca1455b7e44a9380480 and later · before c3fb3e9a2c0c1a0fa492d90eb19bcfa92a5f884daffected · git
    • 03fb92a432ea5abe5909bca1455b7e44a9380480 and later · before d856f7574bcc1d81de565a857caf32f122cd7ce0affected · git
    • 03fb92a432ea5abe5909bca1455b7e44a9380480 and later · before c05189a429fdb371dd455c3c466d67ac2ebff152affected · git
    • 03fb92a432ea5abe5909bca1455b7e44a9380480 and later · before 08aa0537ec8cf29ceccae98acc1a534fc12598c1affected · git
    • 03fb92a432ea5abe5909bca1455b7e44a9380480 and later · before c2a94de38c74e86f49124ac14f093d6a5c377a90affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1
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 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-2022-50738Dec 24, 2025 · vhost-vdpa: fix an iotlb memory leak
    0Monitor
  • ← EarlierCVE-2022-50739Dec 24, 2025 · fs/ntfs3: Add null pointer check for inode operations
    0Monitor
  • Later →CVE-2022-50741Dec 24, 2025 · media: imx-jpeg: Disable useless interrupt to avoid kernel panic
    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 Linux08aa0537ec8cf29ceccae98acc1a534fc12598c1Vendor (CNA)
Linux Linux134ae5eba41294eff76e4be20d6001b8f0192207Vendor (CNA)
Linux Linux4.14.303Vendor (CNA)
Linux Linux4.19.270Vendor (CNA)
Linux Linux4.5Vendor (CNA)
Linux Linux4.9.337Vendor (CNA)
Linux Linux472312fef2b9eccaa03bd59e0ab2527da945e736Vendor (CNA)
Linux Linux5.10Vendor (CNA)
Linux Linux5.4.229Vendor (CNA)
Linux Linux5.9Vendor (CNA)
Linux Linux9850791d389b342ae6e573fe8198db0b4d338352Vendor (CNA)
Linux Linuxc05189a429fdb371dd455c3c466d67ac2ebff152Vendor (CNA)
Linux Linuxc2a94de38c74e86f49124ac14f093d6a5c377a90Vendor (CNA)
Linux Linuxc3fb3e9a2c0c1a0fa492d90eb19bcfa92a5f884dVendor (CNA)
Linux Linuxd856f7574bcc1d81de565a857caf32f122cd7ce0Vendor (CNA)
Linux Linuxeddbb8f7620f9f8008b090a6e10c460074ca575aVendor (CNA)
debian:linux6.1.4-1 · Debian:12Package registry (OSV)
suse:kernel-default4.12.14-122.293.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package registry (OSV)
suse:kernel-source4.12.14-122.293.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage 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.

No history yet (it accumulates with the daily EPSS job).

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.

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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✗ → ✓

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References

Show all references (8 more)

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

All records