What is CVE-2023-53259?

CVE-2023-53259 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Out-of-bounds Read flaw (CWE-125), affecting Linux kernel versions from 4.0 onward and patched in 5.4.296, 5.10.240, 5.15.99 and others. CVE-2023-53259 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53259?

CVE-2023-53259 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2023-53259?

Yes, CVE-2023-53259 has been patched. Fixed versions include 5.4.296, 5.10.240, 5.15.99 and others. If you are running Linux kernel 4.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53259 actively exploited?

CVE-2023-53259 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2023-53259

High

In the Linux kernel, the following vulnerability has been resolved: VMCI: check context->notify_page after call to get_user_pages_fast() to avoid GPF The call to get_user_pages_fast() in vmci_host_setup_notify() can return NULL context->notify_page causing a GPF. To avoid GPF check if context->notify_page == NULL and return error if so. general protection fault, probably for non-canonical address 0xe0009d1000000060: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0x0005088000000300- 0x0005088000000307] CPU: 2 PID: 26180 Comm: repro_34802241 Not tainted 6.1.0-rc4 #1 Hardware name: Red Hat KVM, BIOS 1.15.0-2.module+el8.6.0 04/01/2014 RIP: 0010:vmci_ctx_check_signal_notify+0x91/0xe0 Call Trace: <TASK> vmci_host_unlocked_ioctl+0x362/0x1f40 __x64_sys_ioctl+0x1a1/0x230 do_syscall_64+0x3a/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Package Linux Kernel

Published 2025-09-15

Last modified 2026-01-16

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-125

CVE-2023-53259 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.0 and later are affected. Fixed in 5.4.296, 5.10.240, 5.15.99, 6.1.16, 6.2.3, 6.3 and their respective stable series.

Affected from

≥ 4.0

Fixed in

✓ 5.4.296 5.4.x ✓ 5.10.240 5.10.x ✓ 5.15.99 5.15.x ✓ 6.1.16 6.1.x ✓ 6.2.3 6.2.x ✓ 6.3

References

7 total

Kernel Git
https://git.kernel.org/stable/c/055891397f530f9b1b22be38d7eca8b08382941f

Patch
Kernel Git
https://git.kernel.org/stable/c/1a726cb47fd204109c767409fa9ca15a96328f14

Patch
Kernel Git
https://git.kernel.org/stable/c/91b8e4f61f8f4594ee65368c8d89e6fdc29d3fb1

Patch
Kernel Git
https://git.kernel.org/stable/c/a3c89e8c69a58f62451c0a75b77fcab25979b897

Patch
Kernel Git
https://git.kernel.org/stable/c/b4239bfb260d1e6837766c41a0b241d7670f1402

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2023-53259

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2025-09-15

Modified 2026-01-16

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53259?

CVE-2023-53259 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . It affects Linux kernel versions from 4.0 onward and has been patched in 5.4.296, 5.10.240, 5.15.99 and others. CVE-2023-53259 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53259?

CVE-2023-53259 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2023-53259?

Yes. CVE-2023-53259 has been patched. Fixed versions include 5.4.296, 5.10.240, 5.15.99 and others. If you are running Linux kernel 4.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53259 actively exploited?

No. CVE-2023-53259 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.