PT-2026-61499 · Linux · Linux Kernel

CVE-2026-64182 · Published 2026-07-19 · Updated 2026-07-19

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A memory block reference leak occurs in poison accounting. The functions memblk nr poison inc() and memblk nr poison sub() use find memory block by id() to look up a memory block, which acquires a reference to the memory block device. However, both helper functions fail to drop this reference after updating nr hwpoison, resulting in a leaked device reference for every successful lookup.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-64182

Affected Products

Linux Kernel

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-64182 · Security Note
• https://git.kernel.org/stable/c/686b4283f82cd630fafd7ca9b03dfc080b3ec8fa · Note
• https://twitter.com/infoflowcloud/status/2078953250129068334 · Twitter Post
• https://git.kernel.org/stable/c/24840b3139d7415144b81e4f9f4c44670d15bed9 · Note
• https://git.kernel.org/stable/c/8502e2c2d0633f99d94d22ae8dabc10caae1fc2a · Note
• https://git.kernel.org/stable/c/03a2cc1756a0570f887d624cd6c535ea0cbd4951 · Note
• https://git.kernel.org/stable/c/ce60d9452a0f2effa72fd20ea270c59ca691d455 · Note
• https://twitter.com/CVEnew/status/2078951947667738673 · Twitter Post