🛡️ AZL-40097 — kernel

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2024-26900 affecting package kernel for versions less than 6.6.35.1-4

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

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

AZL-40097 is recorded against 1 package.

  • kernel (fixed in 6.6.35.1-4)

Timeline and source

Published on 17 April 2024 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-04-17
Updated 2026-08-12
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel — 6.6.35.1-4

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