Medium severity5.5NVD Advisory· Published Sep 1, 2022· Updated Jun 17, 2026

CVE-2020-27784

Description

A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free().

AI Insight

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

Affected products

116

Linux/Kernel3 versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=4.1,<4.4.241
- (no CPE)
- (no CPE)
osv-coords113 versions
pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.4 pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%20Micro%205.2 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%20Micro%205.2 pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-preempt&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%20Micro%205.2 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.3 pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Enterprise%20Storage%207 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.1 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCL pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Proxy%204.1 pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1 pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Server%204.1 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Enterprise%20Storage%207 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.1 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.2 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCL pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Proxy%204.1 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Server%204.1 pkg:rpm/suse/kernel-docs&distro=SUSE%20Enterprise%20Storage%207 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCL pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/kernel-docs&distro=SUSE%20Manager%20Proxy%204.1 pkg:rpm/suse/kernel-docs&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1 pkg:rpm/suse/kernel-docs&distro=SUSE%20Manager%20Server%204.1 pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_30&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2 pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_24&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Enterprise%20Storage%207 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Manager%20Server%204.1 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Enterprise%20Storage%207 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOS pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCL pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Manager%20Proxy%204.1 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Manager%20Server%204.1 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.1 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.2 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/suse/kernel-source&distro=SUSE%20Enterprise%20Storage%207 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCL pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Proxy%204.1 pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1 pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Server%204.1 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/suse/kernel-syms&distro=SUSE%20Enterprise%20Storage%207 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCL pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Proxy%204.1 pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1 pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Server%204.1 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3
< 5.3.18-150300.59.93.1+ 112 more
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.38.80.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1.150300.18.54.1
- (no CPE)range: < 5.3.18-150300.59.93.1.150300.18.54.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.106.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.38.80.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.38.80.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.38.80.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150200.24.129.1
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- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1.150200.9.61.1
- (no CPE)range: < 5.3.18-150200.24.129.1.150200.9.61.1
- (no CPE)range: < 5.3.18-150200.24.129.1.150200.9.61.1
- (no CPE)range: < 5.3.18-150300.59.93.1.150300.18.54.1
- (no CPE)range: < 5.3.18-150300.59.93.1.150300.18.54.1
- (no CPE)range: < 5.3.18-150300.59.93.1.150300.18.54.1
- (no CPE)range: < 5.3.18-150200.24.129.1.150200.9.61.1
- (no CPE)range: < 5.3.18-150200.24.129.1.150200.9.61.1
- (no CPE)range: < 5.3.18-150200.24.129.1.150200.9.61.1
- (no CPE)range: < 5.3.18-150200.24.129.1.150200.9.61.1
- (no CPE)range: < 5.3.18-150200.24.129.1.150200.9.61.1
- (no CPE)range: < 5.3.18-150200.24.129.1.150200.9.61.1
- (no CPE)range: < 5.3.18-150200.24.129.1
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- (no CPE)range: < 5.3.18-150300.59.93.1
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- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 1-150200.5.3.1
- (no CPE)range: < 1-150300.7.3.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150200.24.129.1
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- (no CPE)range: < 5.3.18-150200.24.129.1
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- (no CPE)range: < 5.3.18-150300.106.1
- (no CPE)range: < 5.3.18-150300.106.1
- (no CPE)range: < 5.3.18-150300.106.1
- (no CPE)range: < 5.3.18-150300.106.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
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- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150300.38.80.1
- (no CPE)range: < 5.3.18-150300.106.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150300.59.93.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150200.24.129.1
- (no CPE)range: < 5.3.18-150300.38.80.1
- (no CPE)range: < 5.3.18-150300.106.1
- (no CPE)range: < 5.3.18-150300.59.93.1

Patches

Vulnerability mechanics

References

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdMailing ListPatchVendor Advisory

News mentions

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cvss	0.358
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000