In the Linux kernel, the following vulnerability has been resolved:
perf: Fix __perf_event_overflow() vs perf_remove_from_context() race
Make sure that __perf_event_overflow() runs with IRQs disabled for all
possible callchains. Specifically the software events can end up running
it with only preemption disabled.
This opens up a race vs perf_event_exit_event() and friends that will go
and free various things the overflow path expects to be present, like
the BPF program.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Vulnerable Products 4
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.31
|
6.12.77
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.31
|
6.18.17
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.31
|
6.19.7
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.31
|
7.0-rc2
|
References 6
https://git.kernel.org/stable/c/5c48fdc4b4623533d86e279f51531a7ba212eb87
NVD
https://git.kernel.org/stable/c/3f89b61dd504c5b6711de9759e053b082f9abf12
NVD
https://git.kernel.org/stable/c/bb190628fe5f2a73ba762a9972ba16c5e895f73e
NVD
https://git.kernel.org/stable/c/c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae
NVD
https://git.kernel.org/stable/c/4df1a45819e50993cb351682a6ae8e7ed2d233a0
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/4f8d5812337871227bb2c98669a87c306a2f86ef
416baaa9-dc9f-4396-8d5f-8c081fb06d67