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CVE-2019-18675

HIGH
7.8
CVSS Score
Published: November 25, 2019 at 01:44 PM UTC
Updated: June 17, 2026 at 02:25 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.5%

Description

The Linux kernel through 5.3.13 has a start_offset+size Integer Overflow in cpia2_remap_buffer in drivers/media/usb/cpia2/cpia2_core.c because cpia2 has its own mmap implementation. This allows local users (with /dev/video0 access) to obtain read and write permissions on kernel physical pages, which can possibly result in a privilege escalation.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
v < 3.16.603.17 ≤ v < 3.18.1133.19 ≤ v < 4.4.1374.10 ≤ v < 4.14.494.15 ≤ v < 4.16.154.5 ≤ v < 4.9.108
Affected range stops below 3.16.60, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.18.113, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.14.49, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.16.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.137, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.108, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://deshal3v.github.io/blog/kernel-research/mmap_exploitation
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=be83bbf806822b1b89e0a0f23cd87cddc409e429
x_refsource_MISCVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/media/usb/cpia2/cpia2_core.c
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20200103-0001/

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190

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