glibc: signed comparison vulnerability in the ARMv7 memcpy function
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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| n/a | GNU glibc | affected |
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| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-3152-1 | glibc security update |
EUVD |
EUVD-2020-27250 | An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a signed comparison vulnerability. If an attacker underflows the 'num' parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows for program execution to continue in scenarios where a segmentation fault or crash should have occurred. The dangers occur in that subsequent execution and iterations of this code will be executed with this corrupted data. |
Ubuntu USN |
USN-4954-1 | GNU C Library vulnerabilities |
Ubuntu USN |
USN-5310-1 | GNU C Library vulnerabilities |
No CVSS v4.0
This CVE is not in the KEV list.
Exploit prediction score: 5.5% (5.477% probability within 30 days)
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