Medium severity4.4NVD Advisory· Published Dec 9, 2020· Updated Jun 17, 2026

CVE-2020-29660

Description

A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24.

AI Insight

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

Affected products

248

Linux/Linux kerneldescription
Linux/Kernelllm-fuzzy
Range: <=5.9.13
osv-coords246 versions
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pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_32&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_32&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_33&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_33&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_34&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_34&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_35&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_35&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_36&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_36&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_37&distro=HPE%20Helion%20OpenStack%208 pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_37&distro=SUSE%20Enterprise%20Storage%205 pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_37&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_37&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_37&distro=SUSE%20OpenStack%20Cloud%208 pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_37&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208 pkg:rpm/suse/kgraft-patch-SLE12-SP4_Update_12&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP4 pkg:rpm/suse/kgraft-patch-SLE12-SP4_Update_13&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP4 pkg:rpm/suse/kgraft-patch-SLE12-SP4_Update_14&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP4 pkg:rpm/suse/kgraft-patch-SLE12-SP4_Update_15&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP4 pkg:rpm/suse/kgraft-patch-SLE12-SP4_Update_16&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP4 pkg:rpm/suse/kgraft-patch-SLE12-SP4_Update_17&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP4 pkg:rpm/suse/kgraft-patch-SLE12-SP4_Update_18&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP4 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_10&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_11&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_12&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_13&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_14&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_3&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_4&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_5&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_6&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_7&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_8&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5 pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_9&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
< 4.18.0-348.el8+ 245 more
- (no CPE)range: < 4.18.0-348.el8
- (no CPE)range: < 4.12.14-lp151.28.91.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 4.12.14-lp151.28.91.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 4.12.14-lp151.28.91.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 4.12.14-lp151.28.91.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 4.12.14-lp151.28.91.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 4.12.14-lp151.28.91.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.3.18-lp152.3.5.1
- (no CPE)range: < 5.3.18-lp152.3.5.1
- (no CPE)range: < 4.12.14-lp151.28.91.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.14.6-1.4
- (no CPE)range: < 5.3.18-lp152.3.5.1
- (no CPE)range: < 4.12.14-lp151.28.91.1
- (no CPE)range: < 5.3.18-lp152.60.1
- (no CPE)range: < 5.3.18-lp152.3.5.1
- (no CPE)range: < 4.12.14-lp151.28.91.1
- (no CPE)range: < 4.12.14-8.58.1
- (no CPE)range: < 5.3.18-18.32.1
- (no CPE)range: < 4.12.14-16.41.1
- (no CPE)range: < 4.12.14-16.41.1
- (no CPE)range: < 3.0.101-108.123.1
- (no CPE)range: < 5.3.18-24.46.1.9.19.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.12.14-122.57.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-197.78.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.12.14-122.57.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-197.78.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 4.12.14-197.78.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 4.12.14-197.78.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 3.0.101-108.123.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.12.14-122.57.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.12.14-122.57.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-122.57.1
- (no CPE)range: < 4.12.14-197.78.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-197.78.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-122.57.1
- (no CPE)range: < 3.0.101-108.123.1
- (no CPE)range: < 9-2.2
- (no CPE)range: < 8-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.1
- (no CPE)range: < 6-2.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 4-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 2-2.1
- (no CPE)range: < 2-2.1
- (no CPE)range: < 1-3.3.1
- (no CPE)range: < 9-2.2
- (no CPE)range: < 7-5.2
- (no CPE)range: < 6-2.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 2-2.1
- (no CPE)range: < 1-5.3.1
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 1-1.3.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-197.78.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-122.57.1
- (no CPE)range: < 3.0.101-108.123.1
- (no CPE)range: < 3.0.101-108.123.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 4.12.14-10.28.3
- (no CPE)range: < 4.12.14-14.47.1
- (no CPE)range: < 5.3.18-22.1
- (no CPE)range: < 4.12.14-10.28.3
- (no CPE)range: < 4.12.14-14.47.1
- (no CPE)range: < 5.3.18-22.1
- (no CPE)range: < 4.12.14-8.58.1
- (no CPE)range: < 5.3.18-18.32.1
- (no CPE)range: < 4.12.14-16.41.1
- (no CPE)range: < 4.12.14-16.41.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-197.78.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 4.12.14-197.78.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 3.0.101-108.123.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.12.14-122.57.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.12.14-122.57.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.12.14-10.28.3
- (no CPE)range: < 4.12.14-14.47.1
- (no CPE)range: < 5.3.18-22.1
- (no CPE)range: < 4.12.14-8.58.1
- (no CPE)range: < 5.3.18-18.32.1
- (no CPE)range: < 4.12.14-16.41.1
- (no CPE)range: < 4.12.14-16.41.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-197.78.1
- (no CPE)range: < 5.3.18-24.46.1
- (no CPE)range: < 3.0.101-108.123.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.12.14-122.57.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.12.14-122.57.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.4.121-92.149.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.4.180-94.138.1
- (no CPE)range: < 4.12.14-95.68.1
- (no CPE)range: < 4.12.14-10.28.3
- (no CPE)range: < 4.12.14-14.47.1
- (no CPE)range: < 5.3.18-22.1
- (no CPE)range: < 3.0.101-108.123.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 3.0.101-108.123.1
- (no CPE)range: < 4.12.14-197.78.1
- (no CPE)range: < 4.12.14-150.66.1
- (no CPE)range: < 8-2.2
- (no CPE)range: < 8-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.1
- (no CPE)range: < 6-2.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 1-3.3.1
- (no CPE)range: < 1-3.3.1
- (no CPE)range: < 1-3.3.1
- (no CPE)range: < 7-2.2
- (no CPE)range: < 7-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.1
- (no CPE)range: < 6-2.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 1-4.3.1
- (no CPE)range: < 1-4.3.1
- (no CPE)range: < 1-4.3.1
- (no CPE)range: < 1-4.3.1
- (no CPE)range: < 1-4.3.1
- (no CPE)range: < 1-4.3.1
- (no CPE)range: < 9-2.2
- (no CPE)range: < 8-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.1
- (no CPE)range: < 5-2.1
- (no CPE)range: < 2-2.1
- (no CPE)range: < 1-6.3.1
- (no CPE)range: < 4-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 3-2.1
- (no CPE)range: < 2-2.1
- (no CPE)range: < 1-8.3.1
- (no CPE)range: < 9-2.2
- (no CPE)range: < 8-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.2
- (no CPE)range: < 6-2.1
- (no CPE)range: < 6-2.1
- (no CPE)range: < 5-2.1

Patches

Vulnerability mechanics

References

www.openwall.com/lists/oss-security/2020/12/10/1nvdMailing ListPatchThird Party Advisory
packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.htmlnvdExploitThird Party AdvisoryVDB Entry
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdExploitPatchVendor Advisory
lists.debian.org/debian-lts-announce/2021/02/msg00018.htmlnvdMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlnvdMailing ListThird Party Advisory
security.netapp.com/advisory/ntap-20210122-0001/nvdThird Party Advisory
www.debian.org/security/2021/dsa-4843nvdThird Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/nvd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/nvd

News mentions

No linked articles in our index yet.

cvss	0.286
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000