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NVD / CVE Program· CNA Linux

CVE-2022-49055: drm/amdkfd: Check for potential null return of kmalloc_array()

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: 0.27% (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 0a692c625e373fef692ffbc7fc41f8a025f01cb7, 1d7a5aae884ca727d41c7ed15d4c82fdb67c040c, 32cf90a521dcc0f136db7ee5ba32bfe5f79e460e.

Low priority for now. Upgrade to Linux Linux 0a692c625e373fef692ffbc7fc41f8a025f01cb7, 1d7a5aae884ca727d41c7ed15d4c82fdb67c040c, 32cf90a521dcc0f136db7ee5ba32bfe5f79e460e 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: drm/amdkfd: Check for potential null return of kmalloc_array() As the kmalloc_array() may return null, the 'event_waiters[i].wait' would lead to null-pointer dereference. Therefore, it is better to check the return value of kmalloc_array() to avoid this confusion.

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%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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.

Follow CVE-2022-49055

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 kernelbefore 4.9.311
  • linux linux kernel4.10 and later · before 4.14.276
  • linux linux kernel4.15 and later · before 4.19.239
  • linux linux kernel4.20 and later · before 5.4.190
  • linux linux kernel5.5 and later · before 5.10.112
  • linux linux kernel5.11 and later · before 5.15.35
  • linux linux kernel5.16 and later · before 5.17.4
  • linux linux kernel5.18

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

    • 4.2affected
    • f3a398183f7b9ef78f6b71ee9f7641e046403bcb and later · before 32cf90a521dcc0f136db7ee5ba32bfe5f79e460eaffected · git
    • f3a398183f7b9ef78f6b71ee9f7641e046403bcb and later · before 40bf32dbfef866c83a3e74800b81d79e52b6d20baffected · git
    • f3a398183f7b9ef78f6b71ee9f7641e046403bcb and later · before 94869bb0de69a812f70231b0eb480bb2f7ae73a6affected · git
    • f3a398183f7b9ef78f6b71ee9f7641e046403bcb and later · before c7a268b33882d5feaafd29c1734456f41ba41396affected · git
    • f3a398183f7b9ef78f6b71ee9f7641e046403bcb and later · before 1d7a5aae884ca727d41c7ed15d4c82fdb67c040caffected · git
    • f3a398183f7b9ef78f6b71ee9f7641e046403bcb and later · before f2658d5966bcee8c3eb487875f459756d4f7cdfcaffected · git
    • f3a398183f7b9ef78f6b71ee9f7641e046403bcb and later · before 0a692c625e373fef692ffbc7fc41f8a025f01cb7affected · git
    • f3a398183f7b9ef78f6b71ee9f7641e046403bcb and later · before ebbb7bb9e80305820dc2328a371c1b35679f2667affected · git
    • before 4.2not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.17.6-15.17.6-1
SUSE:Linux Enterprise Live Patching 12 SP5kernel-defaultbefore 4.12.14-122.258.14.12.14-122.258.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_68before 1-8.3.11-8.3.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-sourcebefore 4.12.14-122.258.14.12.14-122.258.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-symsbefore 4.12.14-122.258.14.12.14-122.258.1

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-2022-49053Feb 26, 2025 · scsi: target: tcmu: Fix possible page UAF
    31Monitor
  • ← EarlierCVE-2022-49054Feb 26, 2025 · Drivers: hv: vmbus: Deactivate sysctl_record_panic_msg by default in isolated guests
    22Monitor
  • Later →CVE-2022-49057Feb 26, 2025 · block: null_blk: end timed out poll request
    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 Linux0a692c625e373fef692ffbc7fc41f8a025f01cb7Vendor (CNA)
Linux Linux1d7a5aae884ca727d41c7ed15d4c82fdb67c040cVendor (CNA)
Linux Linux32cf90a521dcc0f136db7ee5ba32bfe5f79e460eVendor (CNA)
Linux Linux40bf32dbfef866c83a3e74800b81d79e52b6d20bVendor (CNA)
Linux Linux94869bb0de69a812f70231b0eb480bb2f7ae73a6Vendor (CNA)
Linux Linuxc7a268b33882d5feaafd29c1734456f41ba41396Vendor (CNA)
Linux Linuxebbb7bb9e80305820dc2328a371c1b35679f2667Vendor (CNA)
Linux Linuxf2658d5966bcee8c3eb487875f459756d4f7cdfcVendor (CNA)
debian:linux5.17.6-1 · Debian:12Package registry (OSV)
suse:kernel-default4.12.14-122.258.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package registry (OSV)
suse:kernel-source4.12.14-122.258.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kernel-syms4.12.14-122.258.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kgraft-patch-SLE12-SP5_Update_681-8.3.1 · 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.

—

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-476 · NULL Pointer Dereference

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