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Security fix - do not allow anyone but root to choose the interrupts used

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in the the randomising process.
(This is a change to the /dev/random ioctl()))
This commit is contained in:
Mark Murray 1995-10-30 22:39:34 +00:00
parent 026d3dc8e3
commit a0135d7e95
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=11946
2 changed files with 18 additions and 2 deletions
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10
sys/amd64/amd64/mem.c
View File

@ -38,7 +38,7 @@
*
* from: Utah $Hdr: mem.c 1.13 89/10/08$
* from: @(#)mem.c 7.2 (Berkeley) 5/9/91
* $Id: mem.c,v 1.15 1995/10/28 16:57:55 markm Exp $
* $Id: mem.c,v 1.16 1995/10/29 11:37:56 bde Exp $
*/
/*
@ -351,12 +351,20 @@ mmioctl(dev, cmd, cmdarg, flags, p)
struct proc *p;
{
#ifdef DEVRANDOM
int error;
if (minor(dev) != 3 && minor(dev) != 4)
return (ENODEV);
if (*(u_int16_t *)cmdarg >= 16)
return (EINVAL);
/* Only root can do this */
error = suser(p->p_ucred, &p->p_acflag);
if (error != 0) {
return (error);
}
switch (cmd){
case MEM_SETIRQ:

10
sys/i386/i386/mem.c
View File

@ -38,7 +38,7 @@
*
* from: Utah $Hdr: mem.c 1.13 89/10/08$
* from: @(#)mem.c 7.2 (Berkeley) 5/9/91
* $Id: mem.c,v 1.15 1995/10/28 16:57:55 markm Exp $
* $Id: mem.c,v 1.16 1995/10/29 11:37:56 bde Exp $
*/
/*
@ -351,12 +351,20 @@ mmioctl(dev, cmd, cmdarg, flags, p)
struct proc *p;
{
#ifdef DEVRANDOM
int error;
if (minor(dev) != 3 && minor(dev) != 4)
return (ENODEV);
if (*(u_int16_t *)cmdarg >= 16)
return (EINVAL);
/* Only root can do this */
error = suser(p->p_ucred, &p->p_acflag);
if (error != 0) {
return (error);
}
switch (cmd){
case MEM_SETIRQ: