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NVD / CVE Program· CNA Linux

CVE-2022-49333: net/mlx5: E-Switch, pair only capable devices

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: 0.25% (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 0cef0b7eb044bb8cfdaff4c1db55a8fd442f6bc9, 3008e6a0049361e731b803c60fe8f3ab44e1d73f, 5.14.

Low priority for now. Upgrade to Linux Linux 0cef0b7eb044bb8cfdaff4c1db55a8fd442f6bc9, 3008e6a0049361e731b803c60fe8f3ab44e1d73f, 5.14 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: net/mlx5: E-Switch, pair only capable devices OFFLOADS paring using devcom is possible only on devices that support LAG. Filter based on lag capabilities. This fixes an issue where mlx5_get_next_phys_dev() was called without holding the interface lock. This issue was found when commit bc4c2f2e0179 ("net/mlx5: Lag, filter non compatible devices") added an assert that verifies the interface lock is held. WARNING: CPU: 9 PID: 1706 at drivers/net/ethernet/mellanox/mlx5/core/dev.c:642 mlx5_get_next_phys_dev+0xd2/0x100 [mlx5_core] Modules linked in: mlx5_vdpa vringh vhost_iotlb vdpa mlx5_ib mlx5_core xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat br_netfilter rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_iscsi rdma_cm iw_cm ib_umad ib_ipoib ib_cm ib_uverbs ib_core overlay fuse [last unloaded: mlx5_core] CPU: 9 PID: 1706 Comm: devlink Not tainted 5.18.0-rc7+ #11 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:mlx5_get_next_phys_dev+0xd2/0x100 [mlx5_core] Code: 02 00 75 48 48 8b 85 80 04 00 00 5d c3 31 c0 5d c3 be ff ff ff ff 48 c7 c7 08 41 5b a0 e8 36 87 28 e3 85 c0 0f 85 6f ff ff ff <0f> 0b e9 68 ff ff ff 48 c7 c7 0c 91 cc 84 e8 cb 36 6f e1 e9 4d ff RSP: 0018:ffff88811bf47458 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88811b398000 RCX: 0000000000000001 RDX: 0000000080000000 RSI: ffffffffa05b4108 RDI: ffff88812daaaa78 RBP: ffff88812d050380 R08: 0000000000000001 R09: ffff88811d6b3437 R10: 0000000000000001 R11: 00000000fddd3581 R12: ffff88815238c000 R13: ffff88812d050380 R14: ffff8881018aa7e0 R15: ffff88811d6b3428 FS: 00007fc82e18ae80(0000) GS:ffff88842e080000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9630d1b421 CR3: 0000000149802004 CR4: 0000000000370ea0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> mlx5_esw_offloads_devcom_event+0x99/0x3b0 [mlx5_core] mlx5_devcom_send_event+0x167/0x1d0 [mlx5_core] esw_offloads_enable+0x1153/0x1500 [mlx5_core] ? mlx5_esw_offloads_controller_valid+0x170/0x170 [mlx5_core] ? wait_for_completion_io_timeout+0x20/0x20 ? mlx5_rescan_drivers_locked+0x318/0x810 [mlx5_core] mlx5_eswitch_enable_locked+0x586/0xc50 [mlx5_core] ? mlx5_eswitch_disable_pf_vf_vports+0x1d0/0x1d0 [mlx5_core] ? mlx5_esw_try_lock+0x1b/0xb0 [mlx5_core] ? mlx5_eswitch_enable+0x270/0x270 [mlx5_core] ? __debugfs_create_file+0x260/0x3e0 mlx5_devlink_eswitch_mode_set+0x27e/0x870 [mlx5_core] ? mutex_lock_io_nested+0x12c0/0x12c0 ? esw_offloads_disable+0x250/0x250 [mlx5_core] ? devlink_nl_cmd_trap_get_dumpit+0x470/0x470 ? rcu_read_lock_sched_held+0x3f/0x70 devlink_nl_cmd_eswitch_set_doit+0x217/0x620

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

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%

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

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  • when exploit code appears or is weaponized
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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 kernel5.13.8 and later · before 5.14
  • linux linux kernel5.14.1 and later · before 5.17.15
  • linux linux kernel5.18 and later · before 5.18.4
  • linux linux kernel5.14
  • 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

    • 4d253ea99fbac316cbe4bafaf36087b592c2cd49, 5.14affected
    • dd3fddb82780bfa24124834edd90bbc63bd689cc and later · before 0cef0b7eb044bb8cfdaff4c1db55a8fd442f6bc9affected · git
    • dd3fddb82780bfa24124834edd90bbc63bd689cc and later · before cdbcdddb8076a09aa6ddaf20fd911fc787dca0e5affected · git
    • dd3fddb82780bfa24124834edd90bbc63bd689cc and later · before 3008e6a0049361e731b803c60fe8f3ab44e1d73faffected · git
    • 5.13.8 and later · before 5.14affected · semver
    • before 5.14not affected · semver
    • 5.17.15 and later · up to and including 5.17.*not affected · semver
    • 5.18.4 and later · up to and including 5.18.*not affected · semver
    • 5.19 and laternot affected · original_commit_for_fix

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.5-15.18.5-1

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-2022-49331Feb 26, 2025 · nfc: st21nfca: fix memory leaks in EVT_TRANSACTION handling
    22Monitor
  • ← EarlierCVE-2022-49332Feb 26, 2025 · scsi: lpfc: Address NULL pointer dereference after starget_to_rport()
    22Monitor
  • Later →CVE-2022-49334Feb 26, 2025 · mm/huge_memory: Fix xarray node memory leak
    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 Linux0cef0b7eb044bb8cfdaff4c1db55a8fd442f6bc9Vendor (CNA)
Linux Linux3008e6a0049361e731b803c60fe8f3ab44e1d73fVendor (CNA)
Linux Linux5.14Vendor (CNA)
Linux Linuxcdbcdddb8076a09aa6ddaf20fd911fc787dca0e5Vendor (CNA)
cbl2 kernel 5.15.202.1-1 on CBL-Mariner 2.0—Microsoft (MSRC)
debian:linux5.18.5-1 · 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)

—

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 (2 more)

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

All records