Mitre evaluation:

> Linux kernel built with the Btrfs Filesystem support(CONFIG_BTRFS_FS) is
> vulnerable to a race condition which leaves the extended attribute(xattr)
> empty for a short time window. This could be leveraged to bypass set ACLs and
> potentially escalate user privileges.
> 
> An unprivileged user could use this flaw to potentially escalate privileges on
> a system.
> 
> https://git.kernel.org/linus/5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339

We would like to restate the security issue somewhat. The commit
mentions two separate concerns: (1) "This leaves a time window where
readers (getxattr, listxattrs) won't see any value for the xattr" and
(2) "Deleting the old xattr value without verifying first if the new
xattr will fit." In both cases, apparently the underlying problem is
that the code is attempting to accomplish a transition between a
previously acceptable state of an object and a new acceptable state of
an object, but does this in a way that an intermediate state becomes
visible. Because the intermediate state is, for a security-relevant
reason, not known to be acceptable, the transition code has a
vulnerability (related, in general, to CWE-371). We feel that (1) and
(2) are therefore the same type of vulnerability, even though the
attack methodology might rely on a race condition only in case (1).

Use CVE-2014-9710 for this vulnerability involving improper management
of xattr state.

> Returning -EEXIST when the flag XATTR_CREATE is given and the xattr
> doesn't exist

We don't know whether this third concern is a vulnerability. Presumably
it would depend on what callers do after the -EEXIST.

- -- 
CVE assignment team, MITRE CVE Numbering Authority

In SLE12 tree as: patches.suse/btrfs-8167-make-xattr-replace-operations-atomic.patch

Committed on: Fri Jan 16 16:58:41 2015 +0000 so it's been probably already released.

bugbot adjusting priority

is the issue in the SLE11 codebase?

SLE11SP3 (inherited to SP4): patches.suse/btrfs-8306-make-xattr-replace-operations-atomic.patch

pushed to SLE11-SP3-TD branch as well.

SUSE-SU-2015:1224-1: An update that contains security fixes can now be installed.

Category: security (important)
Bug References: 915517,919007,922583,923908,927355,929525,929647,930786,933429,933896,933904,933907,935705,936831
CVE References: 
Sources used:
SUSE Linux Enterprise Server 11-SP3-TERADATA (src):    kernel-source-3.0.101-57.TDC.2, kernel-syms-3.0.101-57.TDC.2

released i think

.

SUSE-SU-2019:14089-1: An update that solves 9 vulnerabilities and has 9 fixes is now available.

Category: security (important)
Bug References: 1110785,1113769,1119314,1120326,1120843,1120885,1131295,1131543,1132374,1132472,1132580,1133188,1134102,1134729,1134848,1137586,923908,939260
CVE References: CVE-2014-9710,CVE-2018-17972,CVE-2019-11190,CVE-2019-11477,CVE-2019-11478,CVE-2019-11479,CVE-2019-11486,CVE-2019-11884,CVE-2019-5489
Sources used:
SUSE Linux Enterprise Server 11-SP4-LTSS (src):    kernel-bigmem-3.0.101-108.95.2, kernel-default-3.0.101-108.95.2, kernel-ec2-3.0.101-108.95.2, kernel-pae-3.0.101-108.95.2, kernel-ppc64-3.0.101-108.95.2, kernel-source-3.0.101-108.95.1, kernel-syms-3.0.101-108.95.1, kernel-trace-3.0.101-108.95.2, kernel-xen-3.0.101-108.95.2
SUSE Linux Enterprise Server 11-EXTRA (src):    kernel-default-3.0.101-108.95.2, kernel-pae-3.0.101-108.95.2, kernel-ppc64-3.0.101-108.95.2, kernel-trace-3.0.101-108.95.2, kernel-xen-3.0.101-108.95.2
SUSE Linux Enterprise Debuginfo 11-SP4 (src):    kernel-bigmem-3.0.101-108.95.2, kernel-default-3.0.101-108.95.2, kernel-ec2-3.0.101-108.95.2, kernel-pae-3.0.101-108.95.2, kernel-ppc64-3.0.101-108.95.2, kernel-trace-3.0.101-108.95.2, kernel-xen-3.0.101-108.95.2

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.