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NVD / CVE Program· CNA Linux

CVE-2024-26900: md: fix kmemleak of rdev->serial

MediumCVSS 5.5 · v3.1—No exploit Fix available

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: 0.28% (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 4c1021ce46fc2fb6115f7e79d353941e6dcad366, 6cf350658736681b9d6b0b6e58c5c76b235bb4c4, 6d32c832a88513f65c2c2c9c75954ee8b387adea; azl3 kernel 6.6.35.1-4 on Azure Linux 3.0 6.6.35.1-4; azl3 kernel 6.6.92.2-1 on Azure Linux 3.0 6.6.35.1-4.

Low priority for now. Upgrade to Linux Linux 4c1021ce46fc2fb6115f7e79d353941e6dcad366, 6cf350658736681b9d6b0b6e58c5c76b235bb4c4, 6d32c832a88513f65c2c2c9c75954ee8b387adea; azl3 kernel 6.6.35.1-4 on Azure Linux 3.0 6.6.35.1-4; azl3 kernel 6.6.92.2-1 on Azure Linux 3.0 6.6.35.1-4 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: md: fix kmemleak of rdev->serial If kobject_add() is fail in bind_rdev_to_array(), 'rdev->serial' will be alloc not be freed, and kmemleak occurs. unreferenced object 0xffff88815a350000 (size 49152): comm "mdadm", pid 789, jiffies 4294716910 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc f773277a): [<0000000058b0a453>] kmemleak_alloc+0x61/0xe0 [<00000000366adf14>] __kmalloc_large_node+0x15e/0x270 [<000000002e82961b>] __kmalloc_node.cold+0x11/0x7f [<00000000f206d60a>] kvmalloc_node+0x74/0x150 [<0000000034bf3363>] rdev_init_serial+0x67/0x170 [<0000000010e08fe9>] mddev_create_serial_pool+0x62/0x220 [<00000000c3837bf0>] bind_rdev_to_array+0x2af/0x630 [<0000000073c28560>] md_add_new_disk+0x400/0x9f0 [<00000000770e30ff>] md_ioctl+0x15bf/0x1c10 [<000000006cfab718>] blkdev_ioctl+0x191/0x3f0 [<0000000085086a11>] vfs_ioctl+0x22/0x60 [<0000000018b656fe>] __x64_sys_ioctl+0xba/0xe0 [<00000000e54e675e>] do_syscall_64+0x71/0x150 [<000000008b0ad622>] entry_SYSCALL_64_after_hwframe+0x6c/0x74

Published
Apr 17, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 21th 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-2024-26900

When you'll hear from us

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  • 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

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

    • 5.3affected
    • 963c555e75b033202dd76cf6325a7b7c83d08d5f and later · before fb5b347efd1bda989846ffc74679d181222fb123affected · git
    • 963c555e75b033202dd76cf6325a7b7c83d08d5f and later · before f3a1787dc48213f6caea5ba7d47e0222e7fa34a9affected · git
    • 963c555e75b033202dd76cf6325a7b7c83d08d5f and later · before beaf11969fd5cbe6f09cefaa34df1ce8578e8dd9affected · git
    • 963c555e75b033202dd76cf6325a7b7c83d08d5f and later · before 9fd0198f7ef06ae0d6636fb0578560857dead995affected · git
    • 963c555e75b033202dd76cf6325a7b7c83d08d5f and later · before 6d32c832a88513f65c2c2c9c75954ee8b387adeaaffected · git
    • 963c555e75b033202dd76cf6325a7b7c83d08d5f and later · before 4c1021ce46fc2fb6115f7e79d353941e6dcad366affected · git
    • 963c555e75b033202dd76cf6325a7b7c83d08d5f and later · before 6cf350658736681b9d6b0b6e58c5c76b235bb4c4affected · git
    • before 5.3not affected · semver
    • 5.10.217 and later · up to and including 5.10.*not affected · semver

Affected versions

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

  • linux linux kernel5.3 and later · before 6.7.11
  • linux linux kernel6.8 and later · before 6.8.2

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:10linux-5.10before 5.10.218-1~deb10u15.10.218-1~deb10u1
Debian:11linuxbefore 5.10.218-15.10.218-1
Debian:12linuxbefore 6.1.94-16.1.94-1
Debian:13linuxbefore 6.7.12-16.7.12-1

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-2024-26896Apr 17, 2024 · wifi: wfx: fix memory leak when starting AP
    22Monitor
  • ← EarlierCVE-2024-26899Apr 17, 2024 · block: fix deadlock between bd_link_disk_holder and partition scan
    22Monitor
  • Later →CVE-2024-26909Apr 17, 2024 · soc: qcom: pmic_glink_altmode: fix drm bridge use-after-free
    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 Linux4c1021ce46fc2fb6115f7e79d353941e6dcad366Vendor (CNA)
Linux Linux6cf350658736681b9d6b0b6e58c5c76b235bb4c4Vendor (CNA)
Linux Linux6d32c832a88513f65c2c2c9c75954ee8b387adeaVendor (CNA)
Linux Linux9fd0198f7ef06ae0d6636fb0578560857dead995Vendor (CNA)
Linux Linuxbeaf11969fd5cbe6f09cefaa34df1ce8578e8dd9Vendor (CNA)
Linux Linuxf3a1787dc48213f6caea5ba7d47e0222e7fa34a9Vendor (CNA)
Linux Linuxfb5b347efd1bda989846ffc74679d181222fb123Vendor (CNA)
azl3 kernel 6.6.35.1-4 on Azure Linux 3.06.6.35.1-4 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.92.2-1 on Azure Linux 3.06.6.35.1-4 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.159.1-1 on CBL Mariner 2.05.15.159.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.180.1-1 on CBL Mariner 2.05.15.159.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.180.1-1 on CBL-Mariner 2.05.15.159.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.94-1 · Debian:12Package registry (OSV)
debian:linux-5.105.10.218-1~deb10u1 · Debian:10Package 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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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-401 · Missing Release of Memory after Effective Lifetime

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.

References

Show all references (8 more)

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

All records