The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2018-3620: Local attackers on baremetal systems     could use speculative code patterns on hyperthreaded     processors to read data present in the L1 Datacache used     by other hyperthreads on the same CPU core, potentially     leaking sensitive data. (bnc#1087081).

  - CVE-2018-3646: Local attackers in virtualized guest     systems could use speculative code patterns on     hyperthreaded processors to read data present in the L1     Datacache used by other hyperthreads on the same CPU     core, potentially leaking sensitive data, even from     other virtual machines or the host system.
    (bnc#1089343).

  - CVE-2018-5391 aka 'FragmentSmack': A flaw in the IP     packet reassembly could be used by remote attackers to     consume lots of CPU time (bnc#1103097).

  - CVE-2018-10876: A flaw was found in the ext4 filesystem     code. A use-after-free is possible in     ext4_ext_remove_space() function when mounting and     operating a crafted ext4 image. (bnc#1099811)

  - CVE-2018-10877: The ext4 filesystem is vulnerable to an     out-of-bound access in the ext4_ext_drop_refs() function     when operating on a crafted ext4 filesystem image.
    (bnc#1099846)

  - CVE-2018-10878: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bounds write and a     denial of service or unspecified other impact is     possible by mounting and operating a crafted ext4     filesystem image. (bnc#1099813)

  - CVE-2018-10879: A flaw was found in the ext4 filesystem.
    A local user can cause a use-after-free in     ext4_xattr_set_entry function and a denial of service or     unspecified other impact may occur by renaming a file in     a crafted ext4 filesystem image. (bnc#1099844)

  - CVE-2018-10880: Linux kernel is vulnerable to a     stack-out-of-bounds write in the ext4 filesystem code     when mounting and writing to a crafted ext4 image in     ext4_update_inline_data(). An attacker could use this to     cause a system crash and a denial of service.
    (bnc#1099845)

  - CVE-2018-10881: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bound access in     ext4_get_group_info function, a denial of service, and a     system crash by mounting and operating on a crafted ext4     filesystem image. (bnc#1099864)

  - CVE-2018-10882: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bound write in in     fs/jbd2/transaction.c code, a denial of service, and a     system crash by unmounting a crafted ext4 filesystem     image. (bnc#1099849)

  - CVE-2018-10883: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bounds write in     jbd2_journal_dirty_metadata(), a denial of service, and     a system crash by mounting and operating on a crafted     ext4 filesystem image. (bnc#1099863)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2018:2380-1) (Foreshadow)

high Nessus Plugin ID 120082

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