File _patchinfo of Package patchinfo.11885

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File _patchinfo of Package patchinfo.11885

<patchinfo incident="11885">
  <issue id="1130159" tracker="bnc">VUL-0: kernel-source: no permission check during open() time of /proc/&lt;pid&gt;/maps in kernels &lt; 3.18</issue>
  <issue id="1136922" tracker="bnc">VUL-0: CVE-2019-12456: kernel-source: MPT3COMMAND case in _ctl_ioctl_main in drivers/scsi/mpt3sas/mpt3sas_ctl.c in the Linux kernel through 5.1.5. It allows local users to cause a denial of service or possibly</issue>
  <issue id="2018-5390" tracker="cve" />
  <issue id="2018-7191" tracker="cve" />
  <issue id="2018-20836" tracker="cve" />
  <issue id="2019-12614" tracker="cve" />
  <issue id="2019-12818" tracker="cve" />
  <issue id="2019-12456" tracker="cve" />
  <issue id="2019-11487" tracker="cve" />
  <issue id="1102340" tracker="bnc" />
  <issue id="1112824" tracker="bnc"></issue>
  <issue id="1133190" tracker="bnc"></issue>
  <issue id="1134395" tracker="bnc"></issue>
  <issue id="1135603" tracker="bnc"></issue>
  <issue id="1137194" tracker="bnc"></issue>
  <issue id="1138293" tracker="bnc"></issue>
  <issue id="1139751" tracker="bnc">L3: possible bug in kernel 4.4.121-92.114.1 applications tcp socket get stuck</issue>
  <category>security</category>
  <rating>important</rating>
  <packager>alnovak</packager>
  <reboot_needed/>
  <description>

The SUSE Linux Enterprise 12 SP1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

- CVE-2018-5390 aka "SegmentSmack": A remote attacker even with relatively low bandwidth could have caused lots of CPU usage
  by triggering the worst case scenario during IP and/or TCP fragment reassembly (bsc#1102340)
- CVE-2018-7191: In the tun subsystem in the Linux kernel, dev_get_valid_name was not called before register_netdevice. This allowed local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. (bnc#1135603)
- CVE-2018-20836: A race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, could have lead to a use-after-free. (bnc#1134395)
- CVE-2019-12614: An unchecked kstrdup might have allowed an attacker to cause denial of service (a NULL pointer dereference and system crash). (bnc#1137194)
- CVE-2019-12818: The nfc_llcp_build_tlv function in net/nfc/llcp_commands.c may have returned NULL. If the caller did not check for this, it would trigger a NULL pointer dereference. This would cause denial of service. (bnc#1138293)
- CVE-2019-12456: An issue in the MPT3COMMAND case in _ctl_ioctl_main() allowed local users to cause a denial of service or possibly have unspecified other impact by changing the value of ioc_number between two kernel reads of that value, aka a "double fetch" vulnerability. (bsc#1136922)
- CVE-2019-11487: An attacker could have triggered use-after-free via page reference count overflow on slow filesystems with at least of 140 GiB of RAM available. (bnc#1133190)

The following non-security bugs were fixed:

- fuse: Don't access pipe->buffers without pipe_lock() (Prerequisity for CVE-2019-11487, bsc#1133190).
- fuse: call pipe_buf_release() under pipe lock (Prerequisity for CVE-2019-11487, bsc#1133190).
- mm: /proc/pid/maps: Check permissions when opening proc pid maps (bsc#1130159).
- pipe: add pipe_buf_get() helper (Prerequisity for CVE-2019-11487, bsc#1133190).
- tcp: refine memory limit test in tcp_fragment() after CVE-2019-11478 fix (bsc#1139751).
- x86/bugs: do not default to IBRS even on SKL (bsc#1112824).

</description>
<summary>Security update for the Linux Kernel</summary>
</patchinfo>

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