util-linux libblkid DOS extended-partition overflow produces invalid partition metadata
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| util-linux | util-linux | affected |
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| Source | ID | Title |
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Ubuntu USN |
USN-8702-1 | util-linux vulnerabilities |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.178% probability within 30 days)
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ssvc
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| Description | util-linux is a random collection of Linux utilities. Before util-linux 2.41.4, `parse_dos_extended()` in `libblkid/src/partitions/dos.c` computes an extended-partition start sector with 32-bit addition and does not apply the extended-area bounds checks to the first two EBR entries. A local attacker who causes a crafted DOS extended-partition disk image or removable medium to be probed can wrap `cur_start + start` to sector zero and cause libblkid to report a false partition overlapping the MBR. This directly compromises the integrity of the reported partition metadata; disk modification or availability loss requires a separate downstream consumer to act on that metadata. This issue is fixed in 2.41.4. | |
| Title | util-linux libblkid DOS extended-partition overflow produces invalid partition metadata | |
| Weaknesses | CWE-190 | |
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| Metrics |
cvssV3_1
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