Description
An issue was discovered in write_tpt_entry in drivers/infiniband/hw/cxgb4/mem.c in the Linux kernel through 5.3.2. The cxgb4 driver is directly calling dma_map_single (a DMA function) from a stack variable. This could allow an attacker to trigger a Denial of Service, exploitable if this driver is used on an architecture for which this stack/DMA interaction has security relevance.
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 | 5.3.7-1 | — |
| Debian 13 | linux | 5.3.7-1 | — |
| Debian 12 | linux | 5.3.7-1 | — |
| 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 | 4.15.0-72.81 | USN-4210-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1056.58 | USN-4210-1 |
| Ubuntu 18.04 LTS | linux-aws-5.0 | 5.0.0-1023.26~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-azure | 5.0.0-1028.30~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-azure-5.3 | 5.3.0-1008.9~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp | 5.0.0-1028.29~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.3 | 5.3.0-1009.10~18.04.1 | USN-4208-1 |
| Ubuntu 18.04 LTS | linux-gcp-edge +2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1049.52 | USN-4210-1 |
| Ubuntu 18.04 LTS | linux-gke-5.0 | 5.0.0-1027.28~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-hwe | 5.3.0-26.28~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1051.51 | USN-4210-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1065.75 | USN-4210-1 |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1033.38 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1030.33 | USN-4210-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.0 | 5.0.0-1009.14~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1052.56 | USN-4210-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1069.76 | USN-4210-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-170.199 | USN-4211-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1099.110 | USN-4211-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1056.58~16.04.1 | USN-4210-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1064.69 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1050.53 | USN-4210-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-72.81~16.04.1 | USN-4210-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1063.70 | USN-4211-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1030.33~16.04.1 | USN-4210-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1126.135 | USN-4211-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1130.138 | USN-4211-1 |
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 | 4.4.0-1026.31 | — |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1059.63 | USN-4211-2 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1064.69~14.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-170.199~14.04.1 | USN-4211-2 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.43.4.el7uek | ELSA-2020-5866, ELSA-2020-5845 |
| Oracle Linux 7 | perf +5 | 4.14.35-1902.306.2.el7uek | ELSA-2020-5845 |
Advisories 8
- USN-4210-1 linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- USN-4226-1 linux, linux-aws, linux-aws-5.0, linux-azure, linux-gcp, linux-gke-5.0, linux-kvm, linux-oem-osp1, linux-oracle, linux-oracle-5.0, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- USN-4211-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- USN-4208-1 linux, linux-aws, linux-gcp, linux-gcp-5.3, linux-kvm, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- USN-4211-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- DLA-2114-1 linux-4.9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- ELSA-2020-5866 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 6, 2020
- ELSA-2020-5845 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 11, 2020
References
- 20191108 [slackware-security] Slackware 14.2 kernel (SSA:2019-311-01) mailing-list
- USN-4211-2 vendor-advisory
- USN-4208-1 vendor-advisory
- USN-4210-1 vendor-advisory
- USN-4211-1 vendor-advisory
- USN-4226-1 vendor-advisory
- [debian-lts-announce] 20200302 [SECURITY] [DLA 2114-1] linux-4.9 security update mailing-list
- https://www.oracle.com/security-alerts/cpuApr2021.html
- http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- https://lore.kernel.org/lkml/20191001165611.GA3542072%40kroah.com