CVE-2019-15538

Severity

78%

Complexity

99%

Confidentiality

115%

An issue was discovered in xfs_setattr_nonsize in fs/xfs/xfs_iops.c in the Linux kernel through 5.2.9. XFS partially wedges when a chgrp fails on account of being out of disk quota. xfs_setattr_nonsize is failing to unlock the ILOCK after the xfs_qm_vop_chown_reserve call fails. This is primarily a local DoS attack vector, but it might result as well in remote DoS if the XFS filesystem is exported for instance via NFS.

An issue was discovered in xfs_setattr_nonsize in fs/xfs/xfs_iops.c in the Linux kernel through 5.2.9. XFS partially wedges when a chgrp fails on account of being out of disk quota. xfs_setattr_nonsize is failing to unlock the ILOCK after the xfs_qm_vop_chown_reserve call fails. This is primarily a local DoS attack vector, but it might result as well in remote DoS if the XFS filesystem is exported for instance via NFS.

CVSS 3.0 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 7.8. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C).

Overview

First reported 5 years ago

2019-08-25 16:15:00

Last updated 5 years ago

2019-09-04 05:15:00

Affected Software

Linux Kernel

References

openSUSE-SU-2019:2173

openSUSE-SU-2019:2181

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1fb254aa983bf190cfd685d40c64a480a9bafaee

Mailing List, Patch, Vendor Advisory

https://github.com/torvalds/linux/commit/1fb254aa983bf190cfd685d40c64a480a9bafaee

Patch, Third Party Advisory

[debian-lts-announce] 20190914 [SECURITY] [DLA 1919-1] linux-4.9 security update

[debian-lts-announce] 20190915 [SECURITY] [DLA 1919-2] linux-4.9 security update

FEDORA-2019-97380355ae

FEDORA-2019-4c91a2f76e

https://lore.kernel.org/linux-xfs/20190823035528.GH1037422@magnolia/

Mailing List, Patch, Vendor Advisory

https://lore.kernel.org/linux-xfs/[email protected]

Mailing List, Patch, Vendor Advisory

https://security.netapp.com/advisory/ntap-20191004-0001/

https://support.f5.com/csp/article/K32592426?utm_source=f5support&utm_medium=RSS

USN-4144-1

USN-4147-1

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