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The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various
security and bug fixes.
The following security bugs were fixed:
- CVE-2020-25705: A flaw in the way reply ICMP packets are limited in was
found that allowed to quickly scan open UDP ports. This flaw allowed an
off-path remote user to effectively bypassing source port UDP
randomization. The highest threat from this vulnerability is to
confidentiality and possibly integrity, because software and services
that rely on UDP source port randomization (like DNS) are indirectly
affected as well. Kernel versions may be vulnerable to this issue
(bsc#1175721, bsc#1178782).
- CVE-2020-25704: Fixed a memory leak in perf_event_parse_addr_filter()
(bsc#1178393).
- CVE-2020-25668: Fixed a use-after-free in con_font_op() (bnc#1178123).
- CVE-2020-25656: Fixed a concurrency use-after-free in vt_do_kdgkb_ioctl
(bnc#1177766).
- CVE-2020-25285: Fixed a race condition between hugetlb sysctl handlers
in mm/hugetlb.c (bnc#1176485).
- CVE-2020-0430: Fixed an OOB read in skb_headlen of
/include/linux/skbuff.h (bnc#1176723).
- CVE-2020-14351: Fixed a race in the perf_mmap_close() function
(bsc#1177086).
- CVE-2020-16120: Fixed a permissions issue in ovl_path_open()
(bsc#1177470).
- CVE-2020-8694: Restricted energy meter to root access (bsc#1170415).
- CVE-2020-12351: Implemented a kABI workaround for bluetooth l2cap_ops
filter addition (bsc#1177724).
- CVE-2020-12352: Fixed an information leak when processing certain AMP
packets aka "BleedingTooth" (bsc#1177725).
- CVE-2020-25212: Fixed a TOCTOU mismatch in the NFS client code
(bnc#1176381).
- CVE-2020-25645: Fixed an an issue in IPsec that caused traffic between
two Geneve endpoints to be unencrypted (bnc#1177511).
- CVE-2020-14381: Fixed a UAF in the fast user mutex (futex) wait
operation (bsc#1176011).
- CVE-2020-25643: Fixed an improper input validation in the
ppp_cp_parse_cr function of the HDLC_PPP module (bnc#1177206).
- CVE-2020-25641: Fixed a zero-length biovec request issued by the block
subsystem could have caused the kernel to enter an infinite loop,
causing a denial of service (bsc#1177121).
- CVE-2020-26088: Fixed an improper CAP_NET_RAW check in NFC socket
creation could have been used by local attackers to create raw sockets,
bypassing security mechanisms (bsc#1176990).
- CVE-2020-14390: Fixed an out-of-bounds memory write leading to memory
corruption or a denial of service when changing screen size
(bnc#1176235).
- CVE-2020-0432: Fixed an out of bounds write due to an integer overflow
(bsc#1176721).
- CVE-2020-0427: Fixed an out of bounds read due to a use after free
(bsc#1176725).
- CVE-2020-0431: Fixed an out of bounds write due to a missing bounds
check (bsc#1176722).
- CVE-2020-0404: Fixed a linked list corruption due to an unusual root
cause (bsc#1176423).
- CVE-2020-25284: Fixed an incomplete permission checking for access to
rbd devices, which could have been leveraged by local attackers to map
or unmap rbd block devices (bsc#1176482).
- CVE-2020-27673: Fixed an issue where rogue guests could have caused
denial of service of Dom0 via high frequency events (XSA-332 bsc#1177411)
- CVE-2020-27675: Fixed a race condition in event handler which may crash
dom0 (XSA-331 bsc#1177410).
The following non-security bugs were fixed:
https://lists.suse.com/pipermail/sle-security-updates/2020-November/007878.html
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