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CVE.org (no NVD analysis yet)· CNA Linux

CVE-2026-98353: RDMA/erdma: Use IRQ-safe XArray helpers for QP and CQ tables

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.15% (FIRST EPSS).
  • Fixed version: Linux Linux 00baeade709fb66da647e8327e8398bb532e30f7, 6.13, 6.18.58; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1.

Low priority for now. Upgrade to Linux Linux 00baeade709fb66da647e8327e8398bb532e30f7, 6.13, 6.18.58; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1 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: RDMA/erdma: Use IRQ-safe XArray helpers for QP and CQ tables Locked QP and CQ lookups from EQ interrupts can deadlock with create-path XArray updates. If an interrupt arrives while the create path holds the plain xa_lock, the lookup spins forever trying to acquire the same lock. Use IRQ-safe XArray helpers for all QP and CQ create-path updates, including the GSI QP store and error paths. Initialize both arrays with XA_FLAGS_LOCK_IRQ so sleeping allocations preserve interrupt state.

—No exploit Fix available
Published
Oct 6, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 4th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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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.

—

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

    • 610ef81797bb4f709e8675c1d8d093bb9ccdcbd8, c0a83f29a24c7e7f8516630848ef6db4c174deed, 05b8ca493dd02319bca93c640b259c2ba51ef321, 92101d7bd67cf313d65baede27118614a283f6bf, 233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8, 6e32f84b63c054e09392153125d7202abab2d14b, ec987c0654651036dad6a42f7fa2a6d7c16a3687, c92686867638cda954fdb2bdbac8a75e3aa6eaaeaffected
    • 1fc9c1933959d2776a1ce7bf424251b8b5b586cd and later · before e32aa1d85126e6d5ef6efd594ced3f75178886ceaffected · git
    • 4545f355654d044d35a31cd01cc46f491a8a7c36 and later · before 74d4085221a7ec5440996af199ccadfa75b9eb0eaffected · git
    • 98df2aee1459ee1c62c70cbe9b370d2a532aea36 and later · before 00baeade709fb66da647e8327e8398bb532e30f7affected · git
    • 6.1.188 and later · before 6.2affected · semver
    • 6.6.157 and later · before 6.7affected · semver
    • 6.12.110 and later · before 6.13affected · semver
    • 6.1.191 and later · before 6.2affected · semver
    • 6.6.160 and later · before 6.7affected · semver
    • 6.18.52 and later · before 6.18.58affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:14linuxbefore 7.2.8-17.2.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-98351Oct 6, 2026 · wifi: virt_wifi: free skb when disconnected
    0Monitor
  • ← EarlierCVE-2026-98352Oct 6, 2026 · RDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted
    0Monitor
  • Later →CVE-2026-98354Oct 6, 2026 · RDMA/mad: Fix receive buffer leak when PKey enforcement fails
    0Monitor

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 Linux00baeade709fb66da647e8327e8398bb532e30f7Vendor (CNA)
Linux Linux6.13Vendor (CNA)
Linux Linux6.18.58Vendor (CNA)
Linux Linux6.2Vendor (CNA)
Linux Linux6.7Vendor (CNA)
Linux Linux7.2.8Vendor (CNA)
Linux Linux74d4085221a7ec5440996af199ccadfa75b9eb0eVendor (CNA)
Linux Linuxe32aa1d85126e6d5ef6efd594ced3f75178886ceVendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.159.1-1 · Release NotesMicrosoft (MSRC)
debian:linux7.2.8-1 · Debian:14Package 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.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 2, 2026+27 d
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.

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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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. Exploit maturity— → none
  2. 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