Medium severity5.9NVD Advisory· Published Jun 12, 2018· Updated Jun 17, 2026
CVE-2018-12232
CVE-2018-12232
Description
In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash.
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Affected products
41- osv-coords40 versionspkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Tumbleweedpkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2012%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/kernel-livepatch-SLE15_Update_0&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015pkg:rpm/suse/kernel-livepatch-SLE15_Update_1&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015pkg:rpm/suse/kernel-livepatch-SLE15_Update_8&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/kernel-vanilla&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/kgraft-patch-SLE12-SP4_Update_2&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP4
< 4.12.14-lp150.12.45.1+ 39 more
- (no CPE)range: < 4.12.14-lp150.12.45.1
- (no CPE)range: < 5.14.6-1.4
- (no CPE)range: < 4.12.14-5.19.1
- (no CPE)range: < 4.12.14-6.6.2
- (no CPE)range: < 4.12.14-6.6.2
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 9-25.2
- (no CPE)range: < 8-2.1
- (no CPE)range: < 1-1.3.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-5.19.1
- (no CPE)range: < 4.12.14-6.6.2
- (no CPE)range: < 4.12.14-6.6.2
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-5.19.1
- (no CPE)range: < 4.12.14-6.6.2
- (no CPE)range: < 4.12.14-6.6.2
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-95.6.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 4.12.14-25.28.1
- (no CPE)range: < 1-6.3.1
Patches
Vulnerability mechanics
References
9- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/nvdPatchThird Party Advisory
- github.com/torvalds/linux/commit/6d8c50dcb029872b298eea68cc6209c866fd3e14nvdPatchThird Party Advisory
- patchwork.ozlabs.org/patch/926519/nvdPatchThird Party Advisory
- www.securityfocus.com/bid/104453nvdThird Party AdvisoryVDB Entry
- lkml.org/lkml/2018/6/5/14nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2018:2948nvd
- usn.ubuntu.com/3752-1/nvd
- usn.ubuntu.com/3752-2/nvd
- usn.ubuntu.com/3752-3/nvd
News mentions
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