CVE-2019-9857

Severity

49%

Complexity

39%

Confidentiality

115%

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.

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.

CVSS 3.0 Base Score 5.5. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 4.9. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C).

Overview

First reported 5 years ago

2019-03-21 16:01:00

Last updated 5 years ago

2019-04-09 04:29:00

Affected Software

Linux Kernel

References

107527

Third Party Advisory, VDB Entry

https://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git/commit/?h=fsnotify&id=62c9d2674b31d4c8a674bee86b7edc6da2803aea

Patch, Vendor Advisory

FEDORA-2019-65c6d11eba

FEDORA-2019-be9add5b77

https://patchwork.kernel.org/patch/10836283/

Patch, Vendor Advisory

https://security.netapp.com/advisory/ntap-20190404-0002/

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