The xfer_secondary_pool function in drivers/char/random.c in the Linux kernel 2.4...

Vulnerability Description

The xfer_secondary_pool function in drivers/char/random.c in the Linux kernel 2.4 before 2.4.35 performs reseed operations on only the first few bytes of a buffer, which might make it easier for attackers to predict the output of the random number generator, related to incorrect use of the sizeof operator.

References

• http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.34.y.git%3Ba=commit%3Bh=faa3369ac2ea7feb0dd266b6a5e8d6ab153cf925
• http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.34.y.git%3Ba=commit%3Bh=bd67d4c7b11cc33ebdc346bc8926d255b354cd64
• http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.34.6
• http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.35
• http://www.debian.org/security/2008/dsa-1503
• http://secunia.com/advisories/29058
• http://www.vupen.com/english/advisories/2007/2690
• http://www.securityfocus.com/bid/25029