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SUSE: 2019:1768-1 Important: Linux Kernel Fix for Reference Count Overflow

suse
Calendar Grey July 8, 2019
Dist Suse Esm H88
An important patch has been released for the Linux Kernel in SUSE, tackling a severe reference count overflow vulnerability.
An update that fixes one vulnerability is now available

Summary

This update for the Linux Kernel 4.4.180-94_97 fixes one issue. The following security issue was fixed: - CVE-2019-11487: The Linux kernel allowed page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c, include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can occur with FUSE requests (bsc#1133191). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Live Patching 12-SP3: zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2019-1768=1 Package List:

Topics%20covered

Topics Covered

security advisory buffer overflow important fix suse linux kernel reference count

References

#1133191

Cross- CVE-2019-11487

Affected Products:

SUSE Linux Enterprise Live Patching 12-SP3

https://www.suse.com/security/cve/CVE-2019-11487.html

https://bugzilla.suse.com/1133191

Severity
important
Lowest
Low
Medium
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Critical

Announcement ID: SUSE-SU-2019:1768-1
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow important fix suse linux kernel reference count

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