public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-09-18 22:14:16 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

audit/stable-5.18 PR 20220321

Browse source 
-----BEGIN PGP SIGNATURE-----
 
 iQJIBAABCAAyFiEES0KozwfymdVUl37v6iDy2pc3iXMFAmI474wUHHBhdWxAcGF1
 bC1tb29yZS5jb20ACgkQ6iDy2pc3iXPiAQ/8DM7Za/Fef1dPq2Vl/hWa3I0qfVNt
 JxlP2kuyzItkmvjoF+eXeRq0Zv32WDSCoXhKwlAaonchXuKbM7NDkyvPNXQlvQng
 Bfs5u2gPJvGWPmkrwGJNZn1I6nlujwsnVk9td4Un8OzLT9RsB4godH8eqCQEZC/M
 vj5JI+YYMo3iaciCNcKm+H6MCDr7X+rN6b8e8DK8JzYpfIwRsHmRIHix0BIVk28W
 mh8ZtFRgOY3DXdYTYMbatOpZDvtSbhKYiIBiEeHygrviUABOe/pewXGoP3myvl7L
 S7qr8msOC9c/auugeGhukrT17bGmkloTPjS84LYPm9WySN8FwkwlqD3d4kqPKghD
 fj6br/nSgV5bqa1HSh3cwyIHauC0sGOfGIoVvVZt1gIViuHBsBYM1Y2wau3Hg9y3
 BfIXiHckFmWSfzlJDj4fsS+lv9BdJwjeiMbepJQJ1btyMIUMu2V3MJwAXn2SzfuO
 91feKrn3Fbkx7Xgg6dbZbt4BZhNURWRf6ZCZXR0oiDxUNfE+tI6s8wjMKfDzaUuu
 Gj+BlvC+hOqgLczuSKQ1rK3D38uOl2qc2HwXlTuFdtCWNmF9AJ464YBT6UzrHGdB
 8OIqMp+zaTxk7Mrx2AYqnddB/tAga1F0jVaIqkpW1s3EdSrDTEgHJniW0skMz6hw
 /FouCKV8IhP7SNI=
 =0YvJ
 -----END PGP SIGNATURE-----

Merge tag 'audit-pr-20220321' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

Pull audit update from Paul Moore:
 "Just one audit patch queued for v5.18:

   - Change the AUDIT_TIME_* record generation so that they are
     generated at syscall exit time and subject to all of the normal
     syscall exit filtering.

     This should help reduce noise and ensure those records which are
     most relevant to the admin's audit configuration are recorded in
     the audit log"

* tag 'audit-pr-20220321' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
  audit: log AUDIT_TIME_* records only from rules
This commit is contained in:
Linus Torvalds 2022-03-21 20:53:11 -07:00
commit b47d5a4f6b
2 changed files with 71 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
kernel/audit.h
View file

@ -201,6 +201,10 @@ struct audit_context {
struct {
char *name;
} module;
struct {
struct audit_ntp_data ntp_data;
struct timespec64 tk_injoffset;
} time;
};
int fds[2];
struct audit_proctitle proctitle;

87
kernel/auditsc.c
View file

@ -1340,6 +1340,53 @@ static void audit_log_fcaps(struct audit_buffer *ab, struct audit_names *name)
from_kuid(&init_user_ns, name->fcap.rootid));
}
static void audit_log_time(struct audit_context *context, struct audit_buffer **ab)
{
const struct audit_ntp_data *ntp = &context->time.ntp_data;
const struct timespec64 *tk = &context->time.tk_injoffset;
static const char * const ntp_name[] = {
"offset",
"freq",
"status",
"tai",
"tick",
"adjust",
};
int type;
if (context->type == AUDIT_TIME_ADJNTPVAL) {
for (type = 0; type < AUDIT_NTP_NVALS; type++) {
if (ntp->vals[type].newval != ntp->vals[type].oldval) {
if (!*ab) {
*ab = audit_log_start(context,
GFP_KERNEL,
AUDIT_TIME_ADJNTPVAL);
if (!*ab)
return;
}
audit_log_format(*ab, "op=%s old=%lli new=%lli",
ntp_name[type],
ntp->vals[type].oldval,
ntp->vals[type].newval);
audit_log_end(*ab);
*ab = NULL;
}
}
}
if (tk->tv_sec != 0 || tk->tv_nsec != 0) {
if (!*ab) {
*ab = audit_log_start(context, GFP_KERNEL,
AUDIT_TIME_INJOFFSET);
if (!*ab)
return;
}
audit_log_format(*ab, "sec=%lli nsec=%li",
(long long)tk->tv_sec, tk->tv_nsec);
audit_log_end(*ab);
*ab = NULL;
}
}
static void show_special(struct audit_context *context, int *call_panic)
{
struct audit_buffer *ab;
@ -1454,6 +1501,11 @@ static void show_special(struct audit_context *context, int *call_panic)
audit_log_format(ab, "(null)");
break;
case AUDIT_TIME_ADJNTPVAL:
case AUDIT_TIME_INJOFFSET:
/* this call deviates from the rest, eating the buffer */
audit_log_time(context, &ab);
break;
}
audit_log_end(ab);
}
@ -2849,31 +2901,26 @@ void __audit_fanotify(unsigned int response)
void __audit_tk_injoffset(struct timespec64 offset)
{
audit_log(audit_context(), GFP_KERNEL, AUDIT_TIME_INJOFFSET,
"sec=%lli nsec=%li",
(long long)offset.tv_sec, offset.tv_nsec);
}
struct audit_context *context = audit_context();
static void audit_log_ntp_val(const struct audit_ntp_data *ad,
const char *op, enum audit_ntp_type type)
{
const struct audit_ntp_val *val = &ad->vals[type];
if (val->newval == val->oldval)
return;
audit_log(audit_context(), GFP_KERNEL, AUDIT_TIME_ADJNTPVAL,
"op=%s old=%lli new=%lli", op, val->oldval, val->newval);
/* only set type if not already set by NTP */
if (!context->type)
context->type = AUDIT_TIME_INJOFFSET;
memcpy(&context->time.tk_injoffset, &offset, sizeof(offset));
}
void __audit_ntp_log(const struct audit_ntp_data *ad)
{
audit_log_ntp_val(ad, "offset", AUDIT_NTP_OFFSET);
audit_log_ntp_val(ad, "freq", AUDIT_NTP_FREQ);
audit_log_ntp_val(ad, "status", AUDIT_NTP_STATUS);
audit_log_ntp_val(ad, "tai", AUDIT_NTP_TAI);
audit_log_ntp_val(ad, "tick", AUDIT_NTP_TICK);
audit_log_ntp_val(ad, "adjust", AUDIT_NTP_ADJUST);
struct audit_context *context = audit_context();
int type;
for (type = 0; type < AUDIT_NTP_NVALS; type++)
if (ad->vals[type].newval != ad->vals[type].oldval) {
/* unconditionally set type, overwriting TK */
context->type = AUDIT_TIME_ADJNTPVAL;
memcpy(&context->time.ntp_data, ad, sizeof(*ad));
break;
}
}
void __audit_log_nfcfg(const char *name, u8 af, unsigned int nentries,