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NVD / CVE Program· CNA Linux

CVE-2022-49661: can: gs_usb: gs_usb_open/close(): fix memory leak

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.26% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 0e60230bc64355c80abe993d1719fdb318094e20, 2bda24ef95c0311ab93bda00db40486acf30bd0a, 339fa9f80d3b94177a7a459c6d115d3b56007d5a.

Low priority for now. Upgrade to Linux Linux 0e60230bc64355c80abe993d1719fdb318094e20, 2bda24ef95c0311ab93bda00db40486acf30bd0a, 339fa9f80d3b94177a7a459c6d115d3b56007d5a 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: can: gs_usb: gs_usb_open/close(): fix memory leak The gs_usb driver appears to suffer from a malady common to many USB CAN adapter drivers in that it performs usb_alloc_coherent() to allocate a number of USB request blocks (URBs) for RX, and then later relies on usb_kill_anchored_urbs() to free them, but this doesn't actually free them. As a result, this may be leaking DMA memory that's been used by the driver. This commit is an adaptation of the techniques found in the esd_usb2 driver where a similar design pattern led to a memory leak. It explicitly frees the RX URBs and their DMA memory via a call to usb_free_coherent(). Since the RX URBs were allocated in the gs_can_open(), we remove them in gs_can_close() rather than in the disconnect function as was done in esd_usb2. For more information, see the 928150fad41b ("can: esd_usb2: fix memory leak").

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 19th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel3.16 and later · before 4.9.323
  • linux linux kernel4.10 and later · before 4.14.288
  • linux linux kernel4.15 and later · before 4.19.252
  • linux linux kernel4.20 and later · before 5.4.205
  • linux linux kernel5.5 and later · before 5.10.130
  • linux linux kernel5.11 and later · before 5.15.54
  • linux linux kernel5.16 and later · before 5.18.11
  • linux linux kernel5.19

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

    • 3.16affected
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before 339fa9f80d3b94177a7a459c6d115d3b56007d5aaffected · git
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before c1d806bc29ff7ffe0e2a023583c8720ed96cb0b0affected · git
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before d91492638b054f4a359621ef216242be5973ed6baffected · git
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before 6f655b5e13fa4b27e915b6c209ac0da74fd75963affected · git
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before d0b8e223998866b3e7b2895927d4e9689b0a80d8affected · git
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before 0e60230bc64355c80abe993d1719fdb318094e20affected · git
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before ffb6cc6601ec7c8fa963dcf76025df4a02f2cf5caffected · git
    • d08e973a77d128b25e01a08c34d89593fdf222da and later · before 2bda24ef95c0311ab93bda00db40486acf30bd0aaffected · git
    • before 3.16not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.14-15.18.14-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-49657Feb 26, 2025 · usbnet: fix memory leak in error case
    22Monitor
  • ← EarlierCVE-2022-49659Feb 26, 2025 · can: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits
    22Monitor
  • Later →CVE-2022-49663Feb 26, 2025 · tunnels: do not assume mac header is set in skb_tunnel_check_pmtu()
    22Monitor

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 Linux0e60230bc64355c80abe993d1719fdb318094e20Vendor (CNA)
Linux Linux2bda24ef95c0311ab93bda00db40486acf30bd0aVendor (CNA)
Linux Linux339fa9f80d3b94177a7a459c6d115d3b56007d5aVendor (CNA)
Linux Linux6f655b5e13fa4b27e915b6c209ac0da74fd75963Vendor (CNA)
Linux Linuxc1d806bc29ff7ffe0e2a023583c8720ed96cb0b0Vendor (CNA)
Linux Linuxd0b8e223998866b3e7b2895927d4e9689b0a80d8Vendor (CNA)
Linux Linuxd91492638b054f4a359621ef216242be5973ed6bVendor (CNA)
Linux Linuxffb6cc6601ec7c8fa963dcf76025df4a02f2cf5cVendor (CNA)
debian:linux5.18.14-1 · Debian:12Package 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.

—

Bug bounty scope

No known public program.

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

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

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