Author: dannf
Date: Tue Sep 11 05:35:58 2007
New Revision: 9497
Log:
fix a minor DoS issue having to do with spurious interrupt accounting
Added:
dists/etch/linux-2.6/debian/patches/bugfix/clear-spurious-irq.patch
Modified:
dists/etch/linux-2.6/debian/changelog
dists/etch/linux-2.6/debian/patches/series/14
Modified: dists/etch/linux-2.6/debian/changelog
==============================================================================
--- dists/etch/linux-2.6/debian/changelog (original)
+++ dists/etch/linux-2.6/debian/changelog Tue Sep 11 05:35:58 2007
@@ -7,16 +7,23 @@
* Add pci ids for Intel ICH9 controllers, see #435877
* [hppa] remove misuse of global_ack_eiem, fixing a race condition that
resulted in frequent lockups on SMP systems. See: #435878
+
+ [ Frederik Schüler ]
+ * Add support for 3ware 9650SE controllers. (closes: #402562)
+
+ [ dann frazier ]
* bugfix/reset-pdeathsig-on-suid-upstream.patch
Update fix for CVE-2007-3848 with the patch accepted upstream
* Fix ipv6 rfc conformance issue introduced in 2.6.18.dfsg.1-13 by the
fix for CVE-2007-2242. Thanks to Brian Haley for the patch.
(closes: #440127)
-
- [ Frederik Schüler ]
- * Add support for 3ware 9650SE controllers. (closes: #402562)
-
- -- dann frazier <[EMAIL PROTECTED]> Mon, 10 Sep 2007 23:22:24 -0600
+ * Fix a minor denial of service issue that allows local users to disable
+ an interrupt by causing an interrupt handler to be quickly
inserted/removed.
+ This has only been shown to happen with certain serial devices so can only
+ be triggered by a user who already has additional priveleges (dialout
+ group). (closes: #404815)
+
+ -- dann frazier <[EMAIL PROTECTED]> Mon, 10 Sep 2007 23:28:17 -0600
linux-2.6 (2.6.18.dfsg.1-13etch2) stable-security; urgency=high
Added: dists/etch/linux-2.6/debian/patches/bugfix/clear-spurious-irq.patch
==============================================================================
--- (empty file)
+++ dists/etch/linux-2.6/debian/patches/bugfix/clear-spurious-irq.patch Tue Sep
11 05:35:58 2007
@@ -0,0 +1,34 @@
+From: Linus Torvalds <[EMAIL PROTECTED]>
+Date: Tue, 23 Jan 2007 22:16:31 +0000 (-0800)
+Subject: Clear spurious irq stat information when adding irq handler
+X-Git-Tag: v2.6.20-rc6~15
+X-Git-Url:
http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=8528b0f1de1101c6002036fd53638fb21111d0ea
+
+Clear spurious irq stat information when adding irq handler
+
+Any newly added irq handler may obviously make any old spurious irq
+status invalid, since the new handler may well be the thing that is
+supposed to handle any interrupts that came in.
+
+So just clear the statistics when adding handlers.
+
+Pointed-out-by: Alan Cox <[EMAIL PROTECTED]>
+Acked-by: Thomas Gleixner <[EMAIL PROTECTED]>
+Acked-by: Ingo Molnar <[EMAIL PROTECTED]>
+Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
+---
+
+diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
+index b385878..8b961ad 100644
+--- a/kernel/irq/manage.c
++++ b/kernel/irq/manage.c
+@@ -315,6 +315,9 @@ int setup_irq(unsigned int irq, struct irqaction *new)
+ /* Undo nested disables: */
+ desc->depth = 1;
+ }
++ /* Reset broken irq detection when installing new handler */
++ desc->irq_count = 0;
++ desc->irqs_unhandled = 0;
+ spin_unlock_irqrestore(&desc->lock, flags);
+
+ new->irq = irq;
Modified: dists/etch/linux-2.6/debian/patches/series/14
==============================================================================
--- dists/etch/linux-2.6/debian/patches/series/14 (original)
+++ dists/etch/linux-2.6/debian/patches/series/14 Tue Sep 11 05:35:58 2007
@@ -12,3 +12,4 @@
- bugfix/reset-pdeathsig-on-suid.patch
+ bugfix/reset-pdeathsig-on-suid-upstream.patch
+ bugfix/ipv6-disallow-RH0-by-default-2.patch
++ bugfix/clear-spurious-irq.patch
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