File _patchinfo of Package patchinfo.11530

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File _patchinfo of Package patchinfo.11530

<patchinfo incident="11530">
  <issue id="1099658" tracker="bnc">kGraft: migration to fast handlers can cause temporary relapse to unpatched functions</issue>
  <issue id="1106284" tracker="bnc">kernel panic NULL pointer dereference 0000000000000038 on smb2_push_mandatory_locks</issue>
  <issue id="1110785" tracker="bnc">CVE-2018-17972: kernel-source: proc_pid_stack could be exploited by a local attacker to leak kernel task stack contents</issue>
  <issue id="1113769" tracker="bnc">CVE-2018-18281: kernel-source: TLB flush happens too late on mremap</issue>
  <issue id="1120843" tracker="bnc">CVE-2019-5489: kernel-source: new pagecache side-channel attack</issue>
  <issue id="1120885" tracker="bnc">CVE-2019-5489: kernel live patch: new pagecache side-channel attack</issue>
  <issue id="1131543" tracker="bnc">kernel-source: local generic ASLR bypass before calling setuid binaries</issue>
  <issue id="1131565" tracker="bnc">VM on Azure with cifs mount hungs randomly</issue>
  <issue id="1132374" tracker="bnc">CVE-2019-11191: kernel-source: Linux kernel &lt; 4.8 local generic ASLR bypass for setuid binaries</issue>
  <issue id="1132472" tracker="bnc">CVE-2019-11190: kernel-source: Linux kernel &lt; 4.8 local generic ASLR bypass for setuid binaries</issue>
  <issue id="1134537" tracker="bnc">CVE-2019-11815: kernel-source: race condition leading to a use-after-free, related to net namespace cleanup.</issue>
  <issue id="1134596" tracker="bnc">Backport and PTF request for bsc#1107508 patch to SLES 12 SP2 LTSS</issue>
  <issue id="1134848" tracker="bnc">CVE-2019-11884: kernel-source: The do_hidp_sock_ioctl function allows a potential information leak</issue>
  <issue id="1135281" tracker="bnc">CVE-2019-11833: kernel-source: fs/ext4/extents.c  does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitia</issue>
  <issue id="1135603" tracker="bnc">CVE-2018-7191: kernel-source: tun subsystem, dev_get_valid_name is not called before register_netdevice. This allows local users to cause a denial of service (NULL pointer dereference and pan</issue>
  <issue id="1136424" tracker="bnc">CVE-2019-3846: kernel-source: Heap Overflow in mwifiex_update_bss_desc_with_ie function of Marvell Wifi Driver in Linux kernel</issue>
  <issue id="1136446" tracker="bnc">CVE-2019-3846: kernel live patch: Heap Overflow in mwifiex_update_bss_desc_with_ie function of Marvell Wifi Driver in Linux kernel</issue>
  <issue id="1136586" tracker="bnc">CVE-2019-12382: kernel-source: An issue was discovered in drm_load_edid_firmware in drivers/gpu/drm/drm_edid_load.c in the Linux kernel through 5.1.5. There is an unchecked kstrdup of fwstr, which might allow an attacker to cause a d</issue>
  <issue id="1136935" tracker="bnc">kernel-source: Heap Overflow in mwifiex_uap_parse_tail_ies function of Marvell Wifi Driver</issue>
  <issue id="1137586" tracker="bnc">kernel-source: multiple remote denial of service issues (SACK Panic)</issue>
  <issue id="2019-11477" tracker="cve" />
  <issue id="2019-11479" tracker="cve" />
  <issue id="2019-11478" tracker="cve" />
  <issue id="2019-3846" tracker="cve" />
  <issue id="2019-12382" tracker="cve" />
  <issue id="2019-5489" tracker="cve" />
  <issue id="2019-11833" tracker="cve" />
  <issue id="2018-7191" tracker="cve" />
  <issue id="2019-11190" tracker="cve" />
  <issue id="2019-11815" tracker="cve" />
  <issue id="2019-11884" tracker="cve" />
  <issue id="2018-17972" tracker="cve" />
  <category>security</category>
  <rating>important</rating>
  <packager>osalvador</packager>
  <reboot_needed/>
  <description>
The SUSE Linux Enterprise 12 SP2 kernel version 4.4.121 was updated to receive
various security and bugfixes.

The following security bugs were fixed:

- CVE-2019-11477: A sequence of SACKs may have been crafted by a remote
  attacker such that one can trigger an integer overflow, leading to a kernel
  panic. (bsc#1137586).

- CVE-2019-11478: It was possible to send a crafted sequence of SACKs which
  would fragment the TCP retransmission queue. A remote attacker may have been
  able to further exploit the fragmented queue to cause an expensive linked-list
  walk for subsequent SACKs received for that same TCP connection.

- CVE-2019-11479: It was possible to send a crafted sequence of SACKs which
  would fragment the RACK send map. A remote attacker may be able to further
  exploit the fragmented send map to cause an expensive linked-list walk for
  subsequent SACKs received for that same TCP connection. This would have
  resulted in excess resource consumption due to low mss values.

- CVE-2019-3846: A flaw that allowed an attacker to corrupt memory and possibly
  escalate privileges was found in the mwifiex kernel module while connecting
  to a malicious wireless network. (bnc#1136424)

- CVE-2019-12382: An issue was discovered in drm_load_edid_firmware in
  drivers/gpu/drm/drm_edid_load.c in the Linux kernel There is an unchecked
  kstrdup of fwstr, which may have allowed an attacker to cause a denial of service
  (NULL pointer dereference and system crash). (bnc#1136586)

- CVE-2019-5489: The mincore() implementation in mm/mincore.c in the Linux
  kernel allowed local attackers to observe page cache access patterns of other
  processes on the same system, potentially allowing sniffing of secret
  information. (Fixing this affects the output of the fincore program.) Limited
  remote exploitation may have been possible, as demonstrated by latency differences
  in accessing public files from an Apache HTTP Server. (bnc#1120843)

- CVE-2019-11833: fs/ext4/extents.c in the Linux kernel did not zero out the
  unused memory region in the extent tree block, which might have allowed local users
  to obtain sensitive information by reading uninitialized data in the
  filesystem. (bnc#1135281)

- 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. This is similar to CVE-2013-4343. (bnc#1135603)

- CVE-2019-11190: The Linux kernel allowed local users to bypass ASLR on setuid
  programs (such as /bin/su) because install_exec_creds() is called too late in
  load_elf_binary() in fs/binfmt_elf.c, and thus the ptrace_may_access() check
  had a race condition when reading /proc/pid/stat. (bnc#1131543)

- CVE-2019-11815: An issue was discovered in rds_tcp_kill_sock in net/rds/tcp.c
  in the Linux kernel There was a race condition leading to a use-after-free,
  related to net namespace cleanup. (bnc#1134537)

- CVE-2019-11884: The do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c
  in the Linux kernel allowed a local user to obtain potentially sensitive
  information from kernel stack memory via a HIDPCONNADD command, because a
  name field may not have ended with a '\0' character. (bnc#1134848)

- CVE-2018-17972: An issue was discovered in the proc_pid_stack function in
  fs/proc/base.c in the Linux kernel It did not ensure that only root may
  inspect the kernel stack of an arbitrary task, allowing a local attacker to
  exploit racy stack unwinding and leak kernel task stack contents.
  (bnc#1110785)

The following non-security bugs were fixed:

- cifs: keep FileInfo handle live during oplock break (bsc#1106284, bsc#1131565).
- ftrace/x86_64: Emulate call function while updating in breakpoint handler (bsc#1099658).
- kabi: drop LINUX_MIB_TCPWQUEUETOOBIG snmp counter (bsc#1137586).
- kabi: move sysctl_tcp_min_snd_mss to preserve struct net layout (bsc#1137586).
- mwifiex: Fix heap overflow in mwifiex_uap_parse_tail_ies() (bsc#1136935).
- tcp: add tcp_min_snd_mss sysctl (bsc#1137586).
- tcp: enforce tcp_min_snd_mss in tcp_mtu_probing() (bsc#1137586).
- tcp: limit payload size of sacked skbs (bsc#1137586).
- tcp: tcp_fragment() should apply sane memory limits (bsc#1137586).
- x86_64: Add gap to int3 to allow for call emulation (bsc#1099658).
- x86_64: Allow breakpoints to emulate call instructions (bsc#1099658).
- xen-swiotlb: fix the check condition for xen_swiotlb_free_coherent (bnc#1134596).
- xen-swiotlb: use actually allocated size on check physical continuous (bnc#1134596).
</description>
<summary>Security update for the Linux Kernel</summary>
</patchinfo>

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