Description
Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | linux kernel | 5.7 (verified), possibly others 4.18 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.7.6-1 | — |
| Debian 13 | linux | 5.7.6-1 | — |
| Debian 12 | linux | 5.7.6-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-45.49 | — |
| Ubuntu 20.04 LTS | linux-aws +2 | 5.4.0-1022.22 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1023.23 | — |
| Ubuntu 20.04 LTS | linux-gke +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1021.21 | — |
| Ubuntu 20.04 LTS | linux-oem-5.6 | 5.6.0-1048.52 | USN-4752-1 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1016.17 | — |
| Ubuntu 20.04 LTS | linux-riscv | 5.4.0-31.35 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-115.116 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1080.84 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 +2 | 5.4.0-1022.22~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1093.103 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1023.23~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +11 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1081.92 | — |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1067.70 | — |
| Ubuntu 18.04 LTS | linux-gke-5.0 | 5.0.0-1046.47 | — |
| Ubuntu 18.04 LTS | linux-gke-5.3 | 5.3.0-1033.35 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-45.49~18.04.2 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1072.73 | — |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1094.104 | — |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1067.72 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1051.55 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1016.17~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1068.72 | — |
| Ubuntu 18.04 LTS | linux-raspi2-5.3 | 5.3.0-1032.34 | — |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1084.92 | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-187.217 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1112.124 | — |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1080.84~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1093.103~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1081.92~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-115.116~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1078.85 | — |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1051.55~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1137.146 | — |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1141.149 | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1069.73+fips2 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1073.76+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1067.71~20.04.1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2025.25 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2007.8 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1039.44 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1044.49 | — |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1076.80 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1093.103~14.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-187.217~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel +15 | 3.10.0-1160.15.2.el7 | RHSA-2021:0354, RHSA-2021:0336 |
| RHEL 7 | kernel-alt | 4.14.0-115.35.1.el7a | RHSA-2021:0354 |
| RHEL 7 | kernel-rt +10 | 3.10.0-1160.15.2.rt56.1152.el7 | RHSA-2021:0338 |
| RHEL 7 | perf +2 | 3.10.0-957.72.1.el7 | RHSA-2021:1376, RHSA-2021:0354, RHSA-2021:0336 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7.7 EUS | perf +18 | 3.10.0-1062.51.1.el7 | RHSA-2021:2523 |
| RHEL 7.6 EUS | perf +18 | 3.10.0-957.72.1.el7 | RHSA-2021:1376 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | kernel-azure +2 | 5.3.18-18.29.1 | SUSE-SU-2020:3713-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.43.2.9.17.3 | SUSE-SU-2020:3748-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-24.43.2 | SUSE-SU-2020:3748-1 |
| SLES 15 SP1 | kernel-azure +2 | 4.12.14-8.58.1 | SUSE-SU-2021:0097-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-197.75.1 | SUSE-SU-2020:3718-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.66.1 | SUSE-SU-2021:0438-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.41.1 | SUSE-SU-2021:0098-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.54.1 | SUSE-SU-2020:3717-1 |
| SLES 12 SP4 | kernel-syms +2 | 4.12.14-95.68.1 | SUSE-SU-2021:0434-1 |
Show 24 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:0452-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_37 | 1-4.3.1 | SUSE-SU-2021:0452-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.149.1 | SUSE-SU-2021:0437-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_39 | 1-3.3.1 | SUSE-SU-2021:0437-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.120.1 | SUSE-SU-2021:14630-1 |
| SLES for SAP 15 | kernel-docs +5 | 4.12.14-150.66.1 | SUSE-SU-2021:0438-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.41.1 | SUSE-SU-2021:0098-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.54.1 | SUSE-SU-2020:3717-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.68.1 | SUSE-SU-2021:0434-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:0452-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_37 | 1-4.3.1 | SUSE-SU-2021:0452-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.149.1 | SUSE-SU-2021:0437-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_39 | 1-3.3.1 | SUSE-SU-2021:0437-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.25.1 | SUSE-SU-2020:3766-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.43.2 | SUSE-SU-2020:3748-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_8 | 1-5.3.3 | SUSE-SU-2020:3748-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.75.1 | SUSE-SU-2020:3718-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_20 | 1-3.3.1 | SUSE-SU-2020:3718-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.66.1 | SUSE-SU-2021:0438-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_22 | 1-1.3.1 | SUSE-SU-2021:0438-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.54.1 | SUSE-SU-2020:3717-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_13 | 1-8.3.1 | SUSE-SU-2020:3717-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.68.1 | SUSE-SU-2021:0434-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_18 | 1-6.3.1 | SUSE-SU-2021:0434-1 |
| SLE HPC 15 | kernel-docs +5 | 4.12.14-150.66.1 | SUSE-SU-2021:0438-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +3 | 5.3.18-19.1 | SUSE-SU-2020:3764-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.44.2 | SUSE-SU-2020:3798-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-syms +2 | 4.12.14-95.68.1 | SUSE-SU-2021:0434-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:0452-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_37 | 1-4.3.1 | SUSE-SU-2021:0452-1 |
| SUSE OpenStack Cloud 9 | kernel-syms +2 | 4.12.14-95.68.1 | SUSE-SU-2021:0434-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:0452-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_37 | 1-4.3.1 | SUSE-SU-2021:0452-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.149.1 | SUSE-SU-2021:0437-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_39 | 1-3.3.1 | SUSE-SU-2021:0437-1 |
| SUSE HPE Helion OpenStack 8 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:0452-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_37 | 1-4.3.1 | SUSE-SU-2021:0452-1 |
| SUSE Enterprise Storage 5 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:0452-1 |
| SUSE Enterprise Storage 5 | kgraft-patch-SLE12-SP3_Update_37 | 1-4.3.1 | SUSE-SU-2021:0452-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.2 | kernel-default-base | 5.3.18-lp152.54.1.lp152.8.12.1 | openSUSE-SU-2020:2260-1, openSUSE-SU-2020:2161-1 |
| openSUSE Leap 15.2 | kernel-docs | 5.3.18-lp152.54.2 | openSUSE-SU-2020:2161-1 |
| openSUSE Leap 15.2 | kernel-rt +3 | 5.3.18-lp152.3.5.1 | openSUSE-SU-2021:0242-1 |
| openSUSE Leap 15.2 | kernel-syms +7 | 5.3.18-lp152.54.1 | openSUSE-SU-2020:2161-1 |
| openSUSE Leap 15.1 | kernel-debug +5 | 4.12.14-lp151.28.87.2 | openSUSE-SU-2020:2193-1 |
| openSUSE Leap 15.1 | kernel-docs +2 | 4.12.14-lp151.28.87.1 | openSUSE-SU-2020:2193-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.46.3.el7uek | ELSA-2021-9002 |
| Oracle Linux 7 | perf +12 | 3.10.0-1160.15.2.el7 | ELSA-2021-0336 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
Trinadh465/linux-4.19.72_CVE-2020-15436 ★ 0 · Aug 29, 2023
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 28
- RHSA-2021:2523 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Aug 7, 2026
- RHSA-2021:1376 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 31, 2026
- RHSA-2021:0354 Red Hat Security Advisory: kernel-alt security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2021:0336 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2021:0338 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-4752-1 linux-oem-5.6 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- openSUSE-SU-2020:2260-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3764-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0242-1 Security update for RT kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3717-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0434-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0098-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3718-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:2161-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0097-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:2193-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3798-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0437-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:14630-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3766-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3713-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3748-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0438-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0452-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ICSA-24-074-07 Siemens SIMATIC CISA ICS & IT advisories · Mar 14, 2024
- SSA-770721 SSA-770721: Multiple Vulnerabilities in SIMATIC RF160B before V2.2 Siemens ProductCERT · Mar 12, 2024
- ELSA-2021-0336 Moderate: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 3, 2021
- ELSA-2021-9002 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 7, 2021