CVE-2025-0689
published 2025-03-03CVE-2025-0689: When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain…
PriorityP341high7.8CVSS 3.1
AVLACLPRNUIRSUCHIHAH
EPSS
0.44%
35.9th percentile
When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | grub2 | < grub2 2.12-6 (forky) | grub2 2.12-6 (forky) |
| gnu | grub2 | <= 2.12 | — |
| gnu | grub2 | >= 0 < 2.12-6 | 2.12-6 |
| gnu | grub2 | >= 0 < 2.12-6 | 2.12-6 |
| msrc | azl3_grub2_2.06-24_on_azure_linux_3.0 | — | — |
| msrc | azl3_grub2_2.06-25_on_azure_linux_3.0 | — | — |
| msrc | cbl2_grub2_2.06-14_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_grub2_2.06-15_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
vendor_msrc6.4MEDIUM
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Microsoft
Grub2: udf: heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
vendor_msrc·2025-03-11·CVSS 6.4
CVE-2025-0689 [HIGH] CWE-120 Grub2: udf: heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
Grub2: udf: heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
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:
Red Hat
grub2: udf: Heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
vendor_redhat·2025-02-18·CVSS 7.8
CVE-2025-0689 [HIGH] CWE-120 grub2: udf: Heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
grub2: udf: Heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.
When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterat
Debian
CVE-2025-0689: grub2 - When reading data from disk, the grub's UDF filesystem module utilizes the user ...
vendor_debian·2025·CVSS 7.8
CVE-2025-0689 [HIGH] CVE-2025-0689: grub2 - When reading data from disk, the grub's UDF filesystem module utilizes the user ...
When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.
Scope: local
bookworm: open
bullseye: open
forky: resolved (fixed in 2.12-6)
sid: resolved (fixed in 2.12-6)
trixie: resolved (fixed in 2.12-6)
GHSA
GHSA-q7w8-q2f9-vcmh: When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers
ghsa_unreviewed·2025-03-03
CVE-2025-0689 [MEDIUM] CWE-120 GHSA-q7w8-q2f9-vcmh: When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers
When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.
OSV
CVE-2025-0689: When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers
osv·2025-03-03·CVSS 7.8
CVE-2025-0689 [HIGH] CVE-2025-0689: When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers
When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2025-40185 kernel: ice: ice_adapter: release xa entry on adapter allocation failure
bugzilla·2025-11-12
CVE-2025-40185 [MEDIUM] CVE-2025-40185 kernel: ice: ice_adapter: release xa entry on adapter allocation failure
CVE-2025-40185 kernel: ice: ice_adapter: release xa entry on adapter allocation failure
In the Linux kernel, the following vulnerability has been resolved:
ice: ice_adapter: release xa entry on adapter allocation failure
When ice_adapter_new() fails, the reserved XArray entry created by
xa_insert() is not released. This causes subsequent insertions at
the same index to return -EBUSY, potentially leading to
NULL pointer dereferences.
Reorder the operations as suggested by Przemek Kitszel:
1. Check if adapter already exists (xa_load)
2. Reserve the XArray slot (xa_reserve)
3. Allocate the adapter (ice_adapter_new)
4. Store the adapter (xa_store)
Discussion:
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025111244-CVE-2025-40185-0689@gregkh/T
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Bugzilla
CVE-2025-0689 grub2: udf: Heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
bugzilla·2025-02-17·CVSS 7.8
CVE-2025-0689 [HIGH] CVE-2025-0689 grub2: udf: Heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
CVE-2025-0689 grub2: udf: Heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.
2025-03-03
Published