CVE-2023-52462 Affecting linux-5.10 package, versions <5.10.209-2~deb10u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-DEBIAN10-LINUX510-7371436
  • published26 Jun 2024
  • disclosed23 Feb 2024

Introduced: 23 Feb 2024

CVE-2023-52462  (opens in a new tab)

How to fix?

Upgrade Debian:10 linux-5.10 to version 5.10.209-2~deb10u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-5.10 package and not the linux-5.10 package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

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.

CVSS Scores

version 3.1