Medium severity6.5NVD Advisory· Published Nov 28, 2020· Updated Jun 17, 2026

CVE-2020-29373

Description

An issue was discovered in fs/io_uring.c in the Linux kernel before 5.6. It unsafely handles the root directory during path lookups, and thus a process inside a mount namespace can escape to unintended filesystem locations, aka CID-ff002b30181d.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Linux/Kernelllm-fuzzy2 versions
<5.6+ 1 more
- (no CPE)range: <5.6
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: <5.6
Linux/Linux kerneldescription
osv-coords44 versions
pkg:rpm/opensuse/kernel-rt_debug&distro=openSUSE%20Leap%2015.2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_4&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_1&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP2 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP2 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP2 pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP2 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP2 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP2 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_9&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_8&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_6&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_3&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_2&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_0&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_10&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_5&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.2 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_7&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/opensuse/kernel-source-rt&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-syms-rt&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/kernel-preempt&distro=openSUSE%20Leap%2015.2
< 5.3.18-lp152.3.5.1+ 43 more
- (no CPE)range: < 5.3.18-lp152.3.5.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 5.3.18-24.46.1.9.19.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 6-2.1
- (no CPE)range: < 5.3.18-18.32.1
- (no CPE)range: < 5.3.18-18.32.1
- (no CPE)range: < 5.3.18-22.1
- (no CPE)range: < 5.3.18-22.1
- (no CPE)range: < 5.3.18-22.1
- (no CPE)range: < 5.3.18-22.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 1-5.3.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 2-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 7-5.2
- (no CPE)range: < 2-2.2
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.3.18-18.32.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 5.3.18-lp152.3.5.1
- (no CPE)range: < 5.3.18-lp152.3.5.1
- (no CPE)range: < 5.3.18-lp152.3.5.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.3.18-lp152.60.1

Patches

Vulnerability mechanics

References

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdPatchVendor Advisory
bugs.chromium.org/p/project-zero/issues/detailnvdExploitIssue TrackingThird Party Advisory
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6nvdRelease NotesVendor Advisory

News mentions

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