What’s Vulnerable › Vulnerabilities

CVE-2023-52686: powerpc/powernv: Add a null pointer check in opal_event_init()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-17 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/powernv: Add a null pointer check in opal_event_init() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure.

Affected products

• Debian Linux: 10.0
• Linux kernel: from 4.11 before 4.19.306; from 4.20 before 5.4.268; from 5.5 before 5.10.209; from 5.11 before 5.15.148; from 5.16 before 6.1.75; from 6.2 before 6.6.14 — fixed in 4.19.306, 5.10.209, 5.15.148, 5.4.268, 6.1.75, 6.6.14

How to fix

Upgrade to a fixed version: Linux kernel 4.19.306, 5.10.209, 5.15.148, 5.4.268. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/8422d179cf46889c15ceff9ede48c5bfa4e7f0b4
• https://git.kernel.org/stable/c/8649829a1dd25199bbf557b2621cedb4bf9b3050
• https://git.kernel.org/stable/c/9a523e1da6d88c2034f946adfa4f74b236c95ca9
• https://git.kernel.org/stable/c/a14c55eb461d630b836f80591d8caf1f74e62877
• https://git.kernel.org/stable/c/c0b111ea786ddcc8be0682612830796ece9436c7
• https://git.kernel.org/stable/c/e08c2e275fa1874de945b87093f925997722ee42
• https://git.kernel.org/stable/c/e6ad05e3ae9c84c5a71d7bb2d44dc845ae7990cf
• https://git.kernel.org/stable/c/e93d7cf4c1ddbcd846739e7ad849f955a4f18031
• https://git.kernel.org/stable/c/8422d179cf46889c15ceff9ede48c5bfa4e7f0b4
• https://git.kernel.org/stable/c/8649829a1dd25199bbf557b2621cedb4bf9b3050
• https://git.kernel.org/stable/c/9a523e1da6d88c2034f946adfa4f74b236c95ca9
• https://git.kernel.org/stable/c/a14c55eb461d630b836f80591d8caf1f74e62877

Get alerted when CVE-2023-52686 or the next vulnerability affects your stack