The blacklisted entry was introduced by the latest security patch to the
nvidia drivers.
nvidia-graphics-drivers-updates (295.49-0ubuntu0.2) precise-security;
urgency=low
* SECURITY UPDATE: privilege escalation via kernel memory access
- debian/dkms/patches/blacklist-vga-pmu-registers.patch: blacklist
more offsets in nv.{c,h}.
- debian/dkms.conf{.in}: added new patch.
- CVE number pending
-- Marc Deslauriers <marc.deslauri...@ubuntu.com> Sun, 05 Aug 2012 09:49:25
-0400
The code:
diff -ur kernel/nv.h kernel/nv.h
--- kernel/nv.h 2012-08-02 18:19:37.000000000 -0700
+++ kernel/nv.h 2012-08-02 18:19:37.000000000 -0700
@@ -448,7 +448,20 @@
#define IS_BLACKLISTED_REG_OFFSET(nv, offset, length)
\
((IS_REG_RANGE_WITHIN_MAPPING(nv, 0x1000, 0x1000, offset,
length)) ||\
- (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x700000, 0x100000, offset,
length)))
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x84000, 0x1000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x85000, 0x1000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x86000, 0x1000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x87000, 0x1000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x89000, 0x1000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0xa0000, 0x20000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x104000, 0x1000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x105000, 0x1000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x10a000, 0x1000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x1c2000, 0x1000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x1c3000, 0x1000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x618000, 0x2000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x627000, 0x1000, offset,
length)) ||\
+ (IS_REG_RANGE_WITHIN_MAPPING(nv, 0x700000, 0x100000, offset,
length)))
/* duplicated from nvos.h for external builds */
#ifndef NVOS_AGP_CONFIG_DISABLE_AGP
** Also affects: nvidia-graphics-drivers-updates (Ubuntu)
Importance: Undecided
Status: New
--
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1039916
Title:
Nvidia driver causing SIGSEGV in nvclock and smartdimmer
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