Description
A memory leak in the rtl8xxxu_submit_int_urb() function in drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures, aka CID-a2cdd07488e6.
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 | 5.4.13-1 | — |
| Debian 13 | linux | 5.4.13-1 | — |
| Debian 12 | linux | 5.4.13-1 | — |
| Debian 8 | linux-4.9 | 4.9.210-1~deb8u1 | DLA-2114-1 |
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-gke +3 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-91.92 | USN-4302-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1063.67 | USN-4302-1 |
| Ubuntu 18.04 LTS | linux-aws-5.0 | 5.0.0-1027.30 | USN-4301-1 |
| Ubuntu 18.04 LTS | linux-azure | 5.0.0-1035.37 | USN-4301-1 |
| Ubuntu 18.04 LTS | linux-azure-5.3 | 5.3.0-1016.17~18.04.1 | USN-4300-1 |
| Ubuntu 18.04 LTS | linux-gcp | 5.0.0-1033.34 | USN-4301-1 |
| Ubuntu 18.04 LTS | linux-gcp-5.3 +1 | 5.3.0-1014.15~18.04.1 | USN-4300-1 |
| Ubuntu 18.04 LTS | linux-gcp-edge +2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1055.58 | USN-4302-1 |
| Ubuntu 18.04 LTS | linux-gke-5.0 | 5.0.0-1032.33 | USN-4301-1 |
| Ubuntu 18.04 LTS | linux-hwe | 5.3.0-42.34~18.04.1 | USN-4300-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1056.57 | USN-4302-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1076.86 | USN-4302-1 |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1043.48 | USN-4301-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1035.39 | USN-4302-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.0 | 5.0.0-1013.18 | USN-4301-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1057.61 | USN-4302-1 |
| Ubuntu 18.04 LTS | linux-raspi2-5.3 | 5.3.0-1019.21~18.04.1 | USN-4300-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1074.81 | USN-4302-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-174.204 | USN-4286-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1102.113 | USN-4286-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1063.67~16.04.1 | USN-4302-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1075.80 | USN-4302-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1058.62 | USN-4302-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-91.92~16.04.1 | USN-4302-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1066.73 | USN-4286-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1035.38~16.04.1 | USN-4302-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1129.138 | USN-4286-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1133.141 | USN-4286-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 18.04 LTS | linux-aws-fips | 4.15.0-2018.18 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2006.7 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1029.34 | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1062.66 | USN-4286-2 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1074.79~14.04.1 | USN-4302-1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-174.204~14.04.1 | USN-4286-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-240.rt7.54.el8 | RHSA-2020:4609 |
| RHEL 8 | perf +26 | 4.18.0-240.el8 | RHSA-2020:4431 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | kernel-tools-libs-devel | 4.18.0-240.el8 | ALSA-2020:4431 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | kernel-azure +2 | 4.12.14-8.22.1 | SUSE-SU-2019:3372-1 |
| SLES 15 SP1 | kernel-docs | 4.12.14-197.29.2 | SUSE-SU-2019:3317-1 |
| SLES 15 SP1 | kernel-syms +4 | 4.12.14-197.29.1 | SUSE-SU-2019:3317-1 |
| SLES 15 | kernel-azure +2 | 4.12.14-5.47.1 | SUSE-SU-2019:3289-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.47.1 | SUSE-SU-2019:3381-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.7.1 | SUSE-SU-2020:0093-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.7.1 | SUSE-SU-2019:3200-1 |
| SLES 12 SP4 | kernel-azure +2 | 4.12.14-6.34.1 | SUSE-SU-2019:3316-1 |
| SLES 12 SP4 | kernel-docs +4 | 4.12.14-95.45.1 | SUSE-SU-2019:3371-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.7.1 | SUSE-SU-2020:0093-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.7.1 | SUSE-SU-2019:3200-1 |
| SLES for SAP 12 SP4 | kernel-azure +2 | 4.12.14-6.34.1 | SUSE-SU-2019:3316-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.45.1 | SUSE-SU-2019:3371-1 |
| SLE Real Time 12 SP4 | kernel-rt +3 | 4.12.14-8.12.1 | SUSE-SU-2020:0599-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.29.1 | SUSE-SU-2019:3317-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_8 | 1-3.3.1 | SUSE-SU-2019:3317-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.47.1 | SUSE-SU-2019:3381-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_17 | 1-1.3.2 | SUSE-SU-2019:3381-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.7.1 | SUSE-SU-2019:3200-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_1 | 1-8.7.1 | SUSE-SU-2019:3200-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.45.1 | SUSE-SU-2019:3371-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_11 | 1-6.5.1 | SUSE-SU-2019:3371-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.17.1 | SUSE-SU-2020:0613-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | kernel-docs +8 | 4.12.14-lp151.28.36.1 | openSUSE-SU-2019:2675-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-240.el8 | ELSA-2020-4431 |
Advisories 22
- ALSA-2020:4431 Moderate: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2020:4431 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2020:4609 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 7, 2026
- USN-4302-1 linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon, linux-azure vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4301-1 linux-aws-5.0, linux-gcp, linux-gke-5.0, linux-oracle-5.0, linux-azure vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4300-1 linux, linux-aws, linux-gcp, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-raspi2-5.3, linux-azure, linux-azure-5.3 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4286-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4286-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- DLA-2114-1 linux-4.9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2020:0599-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2675-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3372-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3316-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3381-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3289-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3371-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0093-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3317-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-0198 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Dec 9, 2025
- SUSE-SU-2020:0613-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2019:3200-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2020-4431 Moderate: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 10, 2020
References
- https://github.com/torvalds/linux/commit/a2cdd07488e666aa93a49a3fc9c9b1299e27ef3c
- FEDORA-2019-021c968423 vendor-advisory
- FEDORA-2019-34a75d7e61 vendor-advisory
- https://security.netapp.com/advisory/ntap-20191205-0001/
- openSUSE-SU-2019:2675 vendor-advisory
- USN-4286-2 vendor-advisory
- [debian-lts-announce] 20200302 [SECURITY] [DLA 2114-1] linux-4.9 security update mailing-list
- USN-4286-1 vendor-advisory
- USN-4300-1 vendor-advisory
- USN-4301-1 vendor-advisory
- USN-4302-1 vendor-advisory