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NVD / CVE Program· CNA Linux

CVE-2024-27435: nvme: fix reconnection fail due to reserved tag allocation

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: 0.39% (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 149afee5c7418ec5db9d7387b9c9a5c1eb7ea2a8, 262da920896e2f2ab0e3947d9dbee0aa09045818, 6851778504cdb49431809b4ba061903d5f592c96; Azure Linux 3.0 ARM 6.6.35.1-1; Azure Linux 3.0 x64 6.6.35.1-1.
  • Severity is disputed: the assigning authority (CNA) scores it 7.5, NVD 5.5.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 149afee5c7418ec5db9d7387b9c9a5c1eb7ea2a8, 262da920896e2f2ab0e3947d9dbee0aa09045818, 6851778504cdb49431809b4ba061903d5f592c96; Azure Linux 3.0 ARM 6.6.35.1-1; Azure Linux 3.0 x64 6.6.35.1-1 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: nvme: fix reconnection fail due to reserved tag allocation We found a issue on production environment while using NVMe over RDMA, admin_q reconnect failed forever while remote target and network is ok. After dig into it, we found it may caused by a ABBA deadlock due to tag allocation. In my case, the tag was hold by a keep alive request waiting inside admin_q, as we quiesced admin_q while reset ctrl, so the request maked as idle and will not process before reset success. As fabric_q shares tagset with admin_q, while reconnect remote target, we need a tag for connect command, but the only one reserved tag was held by keep alive command which waiting inside admin_q. As a result, we failed to reconnect admin_q forever. In order to fix this issue, I think we should keep two reserved tags for admin queue.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 17, 2024
Updated
Aug 5, 2026
EPSS
0.3% · 33th 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 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
7.5
2.0 point gap

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

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.

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 kernel5.12.1 and later · before 6.1.83
  • linux linux kernel6.2 and later · before 6.6.23
  • linux linux kernel6.7 and later · before 6.7.11
  • linux linux kernel6.8 and later · before 6.8.2
  • linux linux kernel5.12

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

    • 5.12affected
    • ed01fee283a067c72b2d6500046080dbc1bb9dae and later · before 149afee5c7418ec5db9d7387b9c9a5c1eb7ea2a8affected · git
    • ed01fee283a067c72b2d6500046080dbc1bb9dae and later · before ff2f90f88d78559802466ad1c84ac5bda4416b3aaffected · git
    • ed01fee283a067c72b2d6500046080dbc1bb9dae and later · before 6851778504cdb49431809b4ba061903d5f592c96affected · git
    • ed01fee283a067c72b2d6500046080dbc1bb9dae and later · before 262da920896e2f2ab0e3947d9dbee0aa09045818affected · git
    • ed01fee283a067c72b2d6500046080dbc1bb9dae and later · before de105068fead55ed5c07ade75e9c8e7f86a00d1daffected · git
    • before 5.12not affected · semver
    • 6.1.83 and later · up to and including 6.1.*not affected · semver
    • 6.6.23 and later · up to and including 6.6.*not affected · semver
    • 6.7.11 and later · up to and including 6.7.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:9bpftoolbefore 7.3.0-427.26.1.el9_47.3.0-427.26.1.el9_4
AlmaLinux:9kernelbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64kbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debugbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-develbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-cross-headersbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-debugbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-debug-corebefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-debug-develbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-427.26.1.el9_45.14.0-427.26.1.el9_4

+96

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-2024-27433May 17, 2024 · clk: mediatek: mt7622-apmixedsys: Fix an error handling path in clk_mt8135_apmixed_probe()
    31Monitor
  • ← EarlierCVE-2024-27434May 17, 2024 · wifi: iwlwifi: mvm: don't set the MFP flag for the GTK
    22Monitor
  • Later →CVE-2024-35785May 17, 2024 · tee: optee: Fix kernel panic caused by incorrect error handling
    28Monitor

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 Linux149afee5c7418ec5db9d7387b9c9a5c1eb7ea2a8Vendor (CNA)
Linux Linux262da920896e2f2ab0e3947d9dbee0aa09045818Vendor (CNA)
Linux Linux6851778504cdb49431809b4ba061903d5f592c96Vendor (CNA)
Linux Linuxde105068fead55ed5c07ade75e9c8e7f86a00d1dVendor (CNA)
Linux Linuxff2f90f88d78559802466ad1c84ac5bda4416b3aVendor (CNA)
Azure Linux 3.0 ARM6.6.35.1-1 · hyperv-daemonsMicrosoft (MSRC)
Azure Linux 3.0 x646.6.35.1-1 · hyperv-daemonsMicrosoft (MSRC)
almalinux:bpftool7.3.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-427.26.1.el9_4 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.85-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.3.0-427.26.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-427.26.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-427.26.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-427.26.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-427.26.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-427.26.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-427.26.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-427.26.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-427.26.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-427.26.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

+3

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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-667 · Improper Locking

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.

Change log

  1. Fix✗ → ✓

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

References

Show all references (4 more)

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

All records