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CVE-2022-49320· NVD / CVE Program· CNA Linux

dmaengine: zynqmp_dma: In struct zynqmp_dma_chan fix desc_size data type

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 4838969e4d95d2bd2995d1605b20d3144fcb3e74, 7b5488f4721fed6e121e661e165bab06ae2f8675, 83960276ffc9bf5570d4106490346b61e61be5f3.

Low priority for now. Upgrade to Linux Linux 4838969e4d95d2bd2995d1605b20d3144fcb3e74, 7b5488f4721fed6e121e661e165bab06ae2f8675, 83960276ffc9bf5570d4106490346b61e61be5f3 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: dmaengine: zynqmp_dma: In struct zynqmp_dma_chan fix desc_size data type In zynqmp_dma_alloc/free_chan_resources functions there is a potential overflow in the below expressions. dma_alloc_coherent(chan->dev, (2 * chan->desc_size * ZYNQMP_DMA_NUM_DESCS), &chan->desc_pool_p, GFP_KERNEL); dma_free_coherent(chan->dev,(2 * ZYNQMP_DMA_DESC_SIZE(chan) * ZYNQMP_DMA_NUM_DESCS), chan->desc_pool_v, chan->desc_pool_p); The arguments desc_size and ZYNQMP_DMA_NUM_DESCS were 32 bit. Though this overflow condition is not observed but it is a potential problem in the case of 32-bit multiplication. Hence fix it by changing the desc_size data type to size_t. In addition to coverity fix it also reuse ZYNQMP_DMA_DESC_SIZE macro in dma_alloc_coherent API argument. Addresses-Coverity: Event overflow_before_widen.

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

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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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  • 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 kernel4.8 and later · before 5.4.198
  • linux linux kernel5.5 and later · before 5.10.122
  • linux linux kernel5.11 and later · before 5.15.47
  • linux linux kernel5.16 and later · before 5.17.15
  • linux linux kernel5.18 and later · before 5.18.4

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

    • 4.8affected
    • b0cc417c1637192be658e68a74c8d1568e3d35f6 and later · before 83960276ffc9bf5570d4106490346b61e61be5f3affected · git
    • b0cc417c1637192be658e68a74c8d1568e3d35f6 and later · before 95a0ba85c1b51b36e909841c02d205cd223ab753affected · git
    • b0cc417c1637192be658e68a74c8d1568e3d35f6 and later · before 7b5488f4721fed6e121e661e165bab06ae2f8675affected · git
    • b0cc417c1637192be658e68a74c8d1568e3d35f6 and later · before 4838969e4d95d2bd2995d1605b20d3144fcb3e74affected · git
    • b0cc417c1637192be658e68a74c8d1568e3d35f6 and later · before 90aefae2e3a770a6909d339f5d8a988c0b0ceaf0affected · git
    • b0cc417c1637192be658e68a74c8d1568e3d35f6 and later · before f9a9f43a62a04ec3183fb0da9226c7706eed0115affected · git
    • before 4.8not affected · semver
    • 5.4.198 and later · up to and including 5.4.*not affected · semver
    • 5.10.122 and later · up to and including 5.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.5-15.18.5-1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-64kbbefore 5.3.18-150300.59.207.15.3.18-150300.59.207.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-default-basebefore 5.3.18-150300.59.207.1.150300.18.124.15.3.18-150300.59.207.1.150300.18.124.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-docsbefore 5.3.18-150300.59.207.15.3.18-150300.59.207.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-obs-buildbefore 5.3.18-150300.59.207.15.3.18-150300.59.207.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-preemptbefore 5.3.18-150300.59.207.15.3.18-150300.59.207.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-sourcebefore 5.3.18-150300.59.207.15.3.18-150300.59.207.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-symsbefore 5.3.18-150300.59.207.15.3.18-150300.59.207.1
SUSE:Linux Enterprise Live Patching 12 SP5kernel-defaultbefore 4.12.14-122.261.14.12.14-122.261.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_69before 1-8.3.11-8.3.1
SUSE:Linux Enterprise Live Patching 15 SP3kernel-defaultbefore 5.3.18-150300.59.207.15.3.18-150300.59.207.1
SUSE:Linux Enterprise Live Patching 15 SP3kernel-livepatch-SLE15-SP3_Update_58before 1-150300.7.3.11-150300.7.3.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-sourcebefore 4.12.14-122.261.14.12.14-122.261.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-symsbefore 4.12.14-122.261.14.12.14-122.261.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-zfcpdumpbefore 5.3.18-150300.59.207.15.3.18-150300.59.207.1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • 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
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-49318Feb 26, 2025 · f2fs: remove WARN_ON in f2fs_is_valid_blkaddr
    22Monitor
  • ← EarlierCVE-2022-49319Feb 26, 2025 · iommu/arm-smmu-v3: check return value after calling platform_get_resource()
    22Monitor
  • Later →CVE-2022-49321Feb 26, 2025 · xprtrdma: treat all calls not a bcall when bc_serv is NULL
    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 Linux4838969e4d95d2bd2995d1605b20d3144fcb3e74Vendor (CNA)
Linux Linux7b5488f4721fed6e121e661e165bab06ae2f8675Vendor (CNA)
Linux Linux83960276ffc9bf5570d4106490346b61e61be5f3Vendor (CNA)
Linux Linux90aefae2e3a770a6909d339f5d8a988c0b0ceaf0Vendor (CNA)
Linux Linux95a0ba85c1b51b36e909841c02d205cd223ab753Vendor (CNA)
Linux Linuxf9a9f43a62a04ec3183fb0da9226c7706eed0115Vendor (CNA)
debian:linux5.18.5-1 · Debian:12Package registry (OSV)
suse:kernel-64kb5.3.18-150300.59.207.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-default5.3.18-150300.59.207.1 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-default-base5.3.18-150300.59.207.1.150300.18.124.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-docs5.3.18-150300.59.207.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP3_Update_581-150300.7.3.1 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-obs-build5.3.18-150300.59.207.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-preempt5.3.18-150300.59.207.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-source5.3.18-150300.59.207.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-syms5.3.18-150300.59.207.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-zfcpdump5.3.18-150300.59.207.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kgraft-patch-SLE12-SP5_Update_691-8.3.1 · 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

  • CVE-2026-31633422 days apartrxrpc: Fix integer overflow in rxgk_verify_response()
    39Monitor
  • CVE-2026-31649422 days apartnet: stmmac: fix integer underflow in chain mode
    39Monitor
  • CVE-2026-31659422 days apartbatman-adv: reject oversized global TT response buffers
    39Monitor
  • CVE-2026-43341436 days apartnet/ipv6: ioam6: prevent schema length wraparound in trace fill
    39Monitor
  • CVE-2026-46039455 days apartrxgk: Fix potential integer overflow in length check
    39Monitor
  • CVE-2026-46325468 days apartRDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE
    39Monitor

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-190 · Integer Overflow or Wraparound

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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (5 more)

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

All records