HIGH🇬🇧 English

CVE-2026-43178

CVSS 7.8pub. 2026-05-06upd. 2026-06-30

In the Linux kernel, the following vulnerability has been resolved: procfs: fix possible double mmput() in do_procmap_query() When user provides incorrectly sized buffer for build ID for PROCMAP_QUERY we return with -ENAMETOOLONG error. After recent changes this condition happens later, after we unlocked mmap_lock/per-VMA lock and did mmput(), so original goto out is now wrong and will double-mmput() mm_struct. Fix by jumping further to clean up only vm_file and name_buf.

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

  • Linux Kernel

    OS
    Linux
    6.196.12.70 – 6.12.75 (bez)6.18.10 – 6.18.16 (bez)6.19.1 – 6.19.6 (bez)
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CWE
Referencje

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