CVE-2023-53003 [High] | Use-After-Free in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: EDAC/qcom: Do not pass llcc_driv_data as edac_device_ctl_info's pvt_info The memory for llcc_driv_data is allocated by the LLCC driver. But when it is passed as the private driver info to the EDAC core, it will get freed during the qcom_edac driver release. So when the qcom_edac driver gets probed again, it will try to use the freed data leading to the use-after-free bug. Hence, do not pass llcc_driv_data as pvt_info but rather reference it using the platform_data pointer in the qcom_edac driver.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-05-07	0.06%	0.27%	+0.21%
2	2026-01-21	0.02%	0.06%	+0.05%
3	2025-03-28	—	0.02%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-05-07

0.06%

0.27%

+0.21%

2026-01-21

0.02%

0.06%

+0.05%

2025-03-28

—

0.02%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.8

3.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

5.9

134c704f-9b21-4f2e-91b3-4a467353bcc0

OS Trackers for CVE-2023-53003

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2023-53003 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2023-53003
`redhat`	high	—	https://access.redhat.com/security/cve/CVE-2023-53003
`suse`	medium	CVE-2023-53003 severity moderate: SUSE including 25 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 154 product×package rows across 26 product lines (SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS, SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS, … (26 product lines)): Known Not Affected 154.	https://www.suse.com/security/cve/CVE-2023-53003/
`ubuntu`	medium	CVE-2023-53003 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, ignored 146, released 138, not-affected 121, needs-triage 1.	https://ubuntu.com/security/CVE-2023-53003

Affected software / configurations for CVE-2023-53003

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 4.20, < 5.4.231	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.166	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.91	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 6.1.9	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc1::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc2::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc3::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc4::::::
linux	linux_kernel	6.2	cpe:2.3:o:linux:linux_kernel:6.2:rc5::::::

References for CVE-2023-53003

URL	Tags
https://git.kernel.org/stable/c/66e10d5f399629ef7877304d9ba2b35d0474e7eb	Patch
https://git.kernel.org/stable/c/6f0351d0c311951b8b3064db91e61841e85b2b96	Patch
https://git.kernel.org/stable/c/76d9ebb7f0bc10fbc78b6d576751552edf743968	Patch
https://git.kernel.org/stable/c/977c6ba624f24ae20cf0faee871257a39348d4a9	Patch
https://git.kernel.org/stable/c/bff5243bd32661cf9ce66f6d9210fc8f89bda145	Patch

URL

CVE-2023-53003 | EDAC/qcom: Do not pass llcc_driv_data as edac_device_ctl_info's pvt_info

Exploit prediction scoring system (EPSS) score for CVE-2023-53003

Common vulnerability scoring system (CVSS) metrics for CVE-2023-53003

Weakness enumeration for CVE-2023-53003

OS Trackers for CVE-2023-53003

Affected software / configurations for CVE-2023-53003

References for CVE-2023-53003