CVE-2025-47712
published 2025-06-09CVE-2025-47712: A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for…
PriorityP433medium6.5CVSS 3.1
AVNACLPRLUINSUCNINAH
EPSS
0.37%
29.3th percentile
A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | nbdkit | < nbdkit 1.42.3-1 (forky) | nbdkit 1.42.3-1 (forky) |
| msrc | azl3_kernel_6.6.51.1-5_on_azure_linux_3.0 | — | — |
| msrc | azl3_kernel_6.6.56.1-5_on_azure_linux_3.0 | — | — |
| msrc | azl3_nbdkit_1.35.3-7_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl2_kernel_5.15.167.1-2_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.173.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_nbdkit_1.35.3-4_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| msrc | cm2_nbdkit_1.35.3-4_on_cbl_mariner_2.0 | — | — |
| nbdkit_project | nbdkit | >= 0 < 1.42.3-1 | 1.42.3-1 |
| nbdkit_project | nbdkit | >= 0 < 1.42.3-1 | 1.42.3-1 |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv6.5MEDIUM
vendor_debian6.5MEDIUM
vendor_redhat6.5MEDIUM
vendor_msrc5.5MEDIUM
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Microsoft
Nbd: nbdkit: integer overflow triggers an assertion resulting in denial of service
vendor_msrc·2025-06-10·CVSS 4.3
CVE-2025-47712 [MEDIUM] CWE-190 Nbd: nbdkit: integer overflow triggers an assertion resulting in denial of service
Nbd: nbdkit: integer overflow triggers an assertion resulting in denial of service
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
redhat: redhat
Customer Action Required: Yes
Remediation: CBL-Mariner Relea
Red Hat
nbd: nbdkit: Integer overflow triggers an assertion resulting in Denial of Service
vendor_redhat·2025-04-23·CVSS 6.5
CVE-2025-47712 [MEDIUM] CWE-190 nbd: nbdkit: Integer overflow triggers an assertion resulting in Denial of Service
nbd: nbdkit: Integer overflow triggers an assertion resulting in Denial of Service
A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.
A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.
Statement: This flaw was rated as having a Moderate severity by Red Hat Product Security team. While it can be triggered remotely (AV:N) with
Debian
CVE-2025-47712: nbdkit - A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specif...
vendor_debian·2025·CVSS 6.5
CVE-2025-47712 [MEDIUM] CVE-2025-47712: nbdkit - A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specif...
A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.
Scope: local
bookworm: open
bullseye: open
forky: resolved (fixed in 1.42.3-1)
sid: resolved (fixed in 1.42.3-1)
trixie: resolved (fixed in 1.42.3-1)
Microsoft
wifi: wilc1000: fix potential RCU dereference issue in wilc_parse_join_bss_param
vendor_msrc·2024-10-08·CVSS 5.5
CVE-2024-47712 [MEDIUM] CWE-476 wifi: wilc1000: fix potential RCU dereference issue in wilc_parse_join_bss_param
wifi: wilc1000: fix potential RCU dereference issue in wilc_parse_join_bss_param
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
OSV
CVE-2025-47712: A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request
osv·2025-06-09·CVSS 6.5
CVE-2025-47712 [MEDIUM] CVE-2025-47712: A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request
A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.
GHSA
GHSA-fpfc-3gjg-hfhp: A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request
ghsa_unreviewed·2025-06-09
CVE-2025-47712 [MEDIUM] CWE-190 GHSA-fpfc-3gjg-hfhp: A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request
A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-06-09
Published