CVE-2019-9857

MEDIUM

Linux kernel <5.0.2 - Memory Corruption

Title source: llm

Description

In the Linux kernel through 5.0.2, the function inotify_update_existing_watch() in fs/notify/inotify/inotify_user.c neglects to call fsnotify_put_mark() with IN_MASK_CREATE after fsnotify_find_mark(), which will cause a memory leak (aka refcount leak). Finally, this will cause a denial of service.

References (6)

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/107527

[Patch, Vendor Advisory] https://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git/commit/?h=fsnotify&id=62c9d2674b31d4c8a674bee86b7edc6da2803aea

[Patch, Vendor Advisory] https://patchwork.kernel.org/patch/10836283/

[Vendor Advisory] https://security.netapp.com/advisory/ntap-20190404-0002/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NXLZ2V2ES37A3J7DMK4MZYIWV2LEZFLM/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PPH3B7FJOMWD5JWUPZKB6T44KNT4PX2L/

Scores

CVSS v3 5.5

EPSS 0.0007

EPSS Percentile 20.9%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-401

Status published

Affected Products (1)

linux/linux_kernel < 5.0.2

Timeline

Published Mar 21, 2019

Tracked Since Feb 18, 2026