CVE-2023-52462

Medium

In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slot_type[BPF_REG_SIZE - 1] (plus potentially few more below it, depending on actual spill size). So to check if some stack slot has spilled register we need to consult slot_type[7], not slot_type[0]. To avoid the need to remember and double-check this in the future, just use is_spilled_reg() helper.

Package Linux Kernel
Published 2024-02-23
Last modified 2024-11-21
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Weakness type

CWE-476

CVE-2023-52462 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.10.163, 5.15.86, 5.16 and later are affected. Fixed in 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2, 6.8 and their respective stable series.

Affected from
≥ 5.10.163 ≥ 5.15.86 ≥ 5.16
Fixed in
✓ 5.10.209 5.10.x ✓ 5.15.148 5.15.x ✓ 6.1.75 6.1.x ✓ 6.6.14 6.6.x ✓ 6.7.2 6.7.x ✓ 6.8

References

7 total
Showing 5 of 7 references View all on NVD

Frequently asked questions

  • What is CVE-2023-52462?

    CVE-2023-52462 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 5.10.163 onward and has been patched in 5.10.209, 5.15.148, 6.1.75 and others. CVE-2023-52462 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-52462?

    CVE-2023-52462 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N .

  • Is there a patch available for CVE-2023-52462?

    Yes. CVE-2023-52462 has been patched. Fixed versions include 5.10.209, 5.15.148, 6.1.75 and others. If you are running Linux kernel 5.10.163 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-52462 actively exploited?

    No. CVE-2023-52462 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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