CVE-2020-7053

kernel: use-after-free in i915_ppgtt_close in drivers/gpu/drm/i915/i915_gem_gtt.c

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux kernel 4.14 longterm through 4.14.165 and 4.19 longterm through 4.19.96 (and 5.x before 5.2), there is a use-after-free (write) in the i915_ppgtt_close function in drivers/gpu/drm/i915/i915_gem_gtt.c, aka CID-7dc40713618c. This is related to i915_gem_context_destroy_ioctl in drivers/gpu/drm/i915/i915_gem_context.c.

En el kernel de Linux versión 4.14 a largo plazo versiones hasta 4.14.165 y versiones 4.19 a largo plazo hasta 4.19.96 (y versiones 5.x anteriores a 5.2), se presenta un uso de la memoria previamente liberada (escribir) en la función i915_ppgtt_close en el archivo drivers/gpu/drm/i915/i915_gem_gtt.c, también se conoce como CID-7dc40713618c. Esto está relacionado con la función i915_gem_context_destroy_ioctl en el archivo drivers/gpu/drm/i915/i915_gem_context.c.

A use-after-free flaw was found in the Linux kernel’s GPU driver functionality when destroying GEM context. A local user could use this flaw to crash the system or potentially escalate their privileges.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-01-14 CVE Reserved
2020-01-14 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (14)

URL	Tag	Source
http://packetstormsecurity.com/files/156455/Kernel-Live-Patch-Security-Notice-LSN-0063-1.html	X_refsource_misc
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1859522	Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2	Third Party Advisory
https://lore.kernel.org/stable/20200114183937.12224-1-tyhicks%40canonical.com	X_refsource_misc
https://security.netapp.com/advisory/ntap-20200204-0002	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7dc40713618c884bf07c030d1ab1f47a9dc1f310	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html	2023-11-07
https://usn.ubuntu.com/4255-1	2023-11-07
https://usn.ubuntu.com/4255-2	2023-11-07
https://usn.ubuntu.com/4285-1	2023-11-07
https://usn.ubuntu.com/4287-1	2023-11-07
https://usn.ubuntu.com/4287-2	2023-11-07
https://access.redhat.com/security/cve/CVE-2020-7053	2021-03-16
https://bugzilla.redhat.com/show_bug.cgi?id=1795624	2021-03-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.14 <= 4.14.165 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 <= 4.14.165"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.19 <= 4.19.96 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.19 <= 4.19.96"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.0 <= 5.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.0 <= 5.2"		-		Affected