In the Linux kernel, the following vulnerability has been resolved:
cpu: hotplug: Bound hotplug states sysfs output
states_show() adds CPU hotplug state names into a single sysfs buffer
using sprintf(). With enough registered states, this can write past the
end of the PAGE_SIZE buffer.
Use sysfs_emit_at() so output is bounded.
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
References 8
https://git.kernel.org/stable/c/2408be459c70ef4250da1a9e50f5478e6b250d61
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/61a73a123ac7a7fbc57382531f8cb7092d569aba
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/631d53102da9f469c96b882b770336bec095b833
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/6cb15b81ff545840048fb0e1a6e827d560dbf367
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/86f436567f2516a0083b210bedc933544826a2c3
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/998f66e9ce320f3433f60b948e3698b744754a46
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/de4d3d8ae17dc8b4cf8c59436c4b7e2dc2491635
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/27481cf4365a6ff5c9be3590143e7ed434000266
416baaa9-dc9f-4396-8d5f-8c081fb06d67