An issue was discovered in klibc before 2.0.9. An integer overflow in the cpio command may result in a NULL pointer dereference on 64-bit systems.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://kernel.org/pub/linux/libs/klibc/2.0/ | third party advisory release notes |
| https://lists.zytor.com/archives/klibc/2021-April/004593.html | mailing list release notes third party advisory |
| https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=2e48a12ab1e30d43498c2d53e878a11a1b5102d5 | third party advisory patch |
| http://www.openwall.com/lists/oss-security/2021/04/30/1 | mailing list release notes third party advisory |
| https://lists.debian.org/debian-lts-announce/2021/06/msg00025.html | third party advisory mailing list |