NVD / CVE Program· CNA Linux

CVE-2022-49535: scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI

Noroxi assessment

Priority: Monitor (action score 35/100)

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: 0.35% (FIRST EPSS).
Someone on the same network segment can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 10663ebec0ad5c78493a0dd34c9ee4d73d7ca0df, 577a942df3de2666f6947bdd3a5c9e8d30073424, c7dc74ab7975c9b96284abfe4cca756d75fa4604; cbl2 kernel 5.15.182.1-1 on CBL Mariner 2.0 CBL-Mariner Releases; cbl2 kernel 5.15.182.1-1 on CBL-Mariner 2.0 5.15.182.1-1.

Low priority for now. Upgrade to Linux Linux 10663ebec0ad5c78493a0dd34c9ee4d73d7ca0df, 577a942df3de2666f6947bdd3a5c9e8d30073424, c7dc74ab7975c9b96284abfe4cca756d75fa4604; cbl2 kernel 5.15.182.1-1 on CBL Mariner 2.0 CBL-Mariner Releases; cbl2 kernel 5.15.182.1-1 on CBL-Mariner 2.0 5.15.182.1-1 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: scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI If lpfc_issue_els_flogi() fails and returns non-zero status, the node reference count is decremented to trigger the release of the nodelist structure. However, if there is a prior registration or dev-loss-evt work pending, the node may be released prematurely. When dev-loss-evt completes, the released node is referenced causing a use-after-free null pointer dereference. Similarly, when processing non-zero ELS PLOGI completion status in lpfc_cmpl_els_plogi(), the ndlp flags are checked for a transport registration before triggering node removal. If dev-loss-evt work is pending, the node may be released prematurely and a subsequent call to lpfc_dev_loss_tmo_handler() results in a use after free ndlp dereference. Add test for pending dev-loss before decrementing the node reference count for FLOGI, PLOGI, PRLI, and ADISC handling.

HighCVSS 8.8 · v3.1—No exploit Fix available

BDU:2025-04423

Published: Feb 26, 2025
Updated: Aug 5, 2026
EPSS: 0.3% · 28th percentile
CWE: CWE-416

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 35 / 40 · 8.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · Linux: 8.8; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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

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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.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

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

linux linux kernelbefore 5.15.181
linux linux kernel5.16 and later · before 5.18.3

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
- 5.11affected
- 52edb2caf675684acf2140a125de4774c691fecd and later · before c7dc74ab7975c9b96284abfe4cca756d75fa4604affected · git
- 52edb2caf675684acf2140a125de4774c691fecd and later · before 10663ebec0ad5c78493a0dd34c9ee4d73d7ca0dfaffected · git
- 52edb2caf675684acf2140a125de4774c691fecd and later · before 577a942df3de2666f6947bdd3a5c9e8d30073424affected · git
- before 5.11not affected · semver
- 5.15.181 and later · up to and including 5.15.*not affected · semver
- 5.18.3 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.

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 5.18.5-1	5.18.5-1

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-2022-49533Feb 26, 2025 · ath11k: Change max no of active probe SSID and BSSID to fw capability
22Monitor
← EarlierCVE-2022-49534Feb 26, 2025 · scsi: lpfc: Protect memory leak for NPIV ports sending PLOGI_RJT
22Monitor
Later →CVE-2022-49536Feb 26, 2025 · scsi: lpfc: Fix SCSI I/O completion and abort handler deadlock
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 / package	Fixed version	Source
Linux Linux	10663ebec0ad5c78493a0dd34c9ee4d73d7ca0df	Vendor (CNA)
Linux Linux	577a942df3de2666f6947bdd3a5c9e8d30073424	Vendor (CNA)
Linux Linux	c7dc74ab7975c9b96284abfe4cca756d75fa4604	Vendor (CNA)
cbl2 kernel 5.15.182.1-1 on CBL Mariner 2.0	CBL-Mariner Releases	Microsoft (MSRC)
cbl2 kernel 5.15.182.1-1 on CBL-Mariner 2.0	5.15.182.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
debian:linux	5.18.5-1 · Debian:12	Package 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 on the same network segment can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Adjacent
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

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

nvd-secondary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

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

Fix✗ → ✓Sep 28, 2026, 10:10 PM UTC

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

References

git.kernel.org/stable/c/10663ebec0ad5c78493a0dd34c9ee4d73d7ca0df

Show all references (2 more)

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

All records