Description
In the Linux kernel, the following vulnerability has been resolved:
Avoid hw_desc array overrun in dw-axi-dmac
I have a use case where nr_buffers = 3 and in which each descriptor is composed by 3
segments, resulting in the DMA channel descs_allocated to be 9. Since axi_desc_put()
handles the hw_desc considering the descs_allocated, this scenario would result in a
kernel panic (hw_desc array will be overrun).
To fix this, the proposal is to add a new member to the axi_dma_desc structure,
where we keep the number of allocated hw_descs (axi_desc_alloc()) and use it in
axi_desc_put() to handle the hw_desc array correctly.
Additionally I propose to remove the axi_chan_start_first_queued() call after completing
the transfer, since it was identified that unbalance can occur (started descriptors can
be interrupted and transfer ignored due to DMA channel not being enabled).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 5.12 | 5.15.162 |
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 | 6.9.7-1 | — |
| Debian 13 | linux | 6.9.7-1 | — |
| Debian 12 | linux | 6.1.99-1 | DSA-5731-1 |
| Debian 11 | linux-6.1 | 6.1.119-1~deb11u1 | DLA-4008-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1052.54 | — |
| Ubuntu 24.04 LTS | linux | 6.8.0-44.44 | USN-6999-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1015.16 | USN-6999-1 |
| Ubuntu 24.04 LTS | linux-gcp +1 | 6.8.0-1014.16 | USN-7004-1, USN-6999-1 |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1010.13 | USN-6999-1 |
| Ubuntu 24.04 LTS | linux-ibm +2 | 6.8.0-1012.12 | USN-6999-1 |
| Ubuntu 24.04 LTS | linux-nvidia | 6.8.0-1013.14 | USN-7005-1 |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1013.14.1 | USN-7005-1 |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1011.12 | USN-6999-2 |
| Ubuntu 24.04 LTS | linux-riscv +1 | 6.8.0-44.44.1 | USN-6999-1 |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-121.131 | USN-7007-3, USN-7007-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1069.75 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1015.16~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1072.81 | USN-7009-1 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1072.81.1 | USN-7009-1 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1068.76 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-gcp-6.8 +1 | 6.8.0-1014.16~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1066.72 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1052.59 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-hwe-6.8 | 6.8.0-45.45~22.04.1 | USN-7029-1 |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1062.65 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-ibm-6.8 +1 | 6.8.0-1012.12~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1064.70 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1066.71 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1064.65 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | 6.8.0-1013.14~22.04.1 | USN-7005-2 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1028.28 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1016.16 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1067.73 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-riscv +31 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv-6.8 +1 | 6.8.0-44.44.1~22.04.1 | USN-7008-1 |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1035.39 | USN-7019-1 |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1069.75~20.04.1 | USN-7007-1 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1072.81~20.04.1 | USN-7009-1 |
| Ubuntu 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1072.81~20.04.1.1 | USN-7009-2 |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1068.76~20.04.1 | USN-7007-1 |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1052.59~20.04.1 | USN-7007-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-121.131~20.04.1 | USN-7007-3, USN-7007-1 |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1062.65~20.04.1 | USN-7007-2 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1064.70~20.04.1 | USN-7007-1 |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1030.30~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1067.73~20.04.1 | USN-7007-2 |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1065.69~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2010.10 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1008.8 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1063.65 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1070.78 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime-6.8 | 6.8.1-1008.8~22.04.1 | — |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-fips | 6.8.0-78.78+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | 5.15.0-1069.75+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | 5.15.0-1072.81+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-121.131+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1068.76+fips1 | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | kernel-64kb +5 | 6.4.0-150600.23.17.1 | SUSE-SU-2024:2802-1 |
| SLES 15 SP6 | kernel-azure +1 | 6.4.0-150600.8.8.2 | SUSE-SU-2024:2896-1 |
| SLES 15 SP6 | kernel-default-base | 6.4.0-150600.23.17.1.150600.12.6.2 | SUSE-SU-2024:2802-1 |
| SLES 15 SP6 | kernel-docs | 6.4.0-150600.23.17.3 | SUSE-SU-2024:2802-1 |
| SLES 15 SP6 | kernel-syms-azure | 6.4.0-150600.8.8.1 | SUSE-SU-2024:2896-1 |
| SLES 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.63.1 | SUSE-SU-2024:2947-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| SLES 15 SP5 | kernel-docs | 5.14.21-150500.55.73.2 | SUSE-SU-2024:2939-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 6.0 | kernel-default-base | 6.4.0-17.1.1.51 | SUSE-SU-2025:20008-1 |
| SLE Micro 6.0 | kernel-rt +1 | 6.4.0-9.1 | SUSE-SU-2025:20028-1 |
| SLE Micro 6.0 | kernel-source +2 | 6.4.0-18.1 | SUSE-SU-2025:20008-1 |
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
| SLE Live Patching 15 SP6 | kernel-default | 6.4.0-150600.23.17.1 | SUSE-SU-2024:2802-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6-RT_Update_1 | 1-150600.1.5.1 | SUSE-SU-2024:2973-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_3 | 1-150600.13.3.1 | SUSE-SU-2024:2802-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_17 +1 | 1-150500.11.3.1 | SUSE-SU-2024:2939-1, SUSE-SU-2024:2894-1 |
| SUSE Real Time Module 15 SP6 | kernel-rt +3 | 6.4.0-150600.10.5.1 | SUSE-SU-2024:2973-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +3 | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | dtb-aarch64 +9 | 6.4.0-150600.23.17.1 | SUSE-SU-2024:2802-1 |
| openSUSE Leap 15.6 | kernel-azure +1 | 6.4.0-150600.8.8.2 | SUSE-SU-2024:2896-1 |
| openSUSE Leap 15.6 | kernel-default-base | 6.4.0-150600.23.17.1.150600.12.6.2 | SUSE-SU-2024:2802-1 |
| openSUSE Leap 15.6 | kernel-docs | 6.4.0-150600.23.17.3 | SUSE-SU-2024:2802-1 |
| openSUSE Leap 15.6 | kernel-rt +3 | 6.4.0-150600.10.5.1 | SUSE-SU-2024:2973-1 |
| openSUSE Leap 15.6 | kernel-syms-azure | 6.4.0-150600.8.8.1 | SUSE-SU-2024:2896-1 |
| openSUSE Leap 15.5 | dtb-aarch64 +9 | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.63.1 | SUSE-SU-2024:2947-1 |
| openSUSE Leap 15.5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| openSUSE Leap 15.5 | kernel-docs | 5.14.21-150500.55.73.2 | SUSE-SU-2024:2939-1 |
| openSUSE Leap 15.5 | kernel-rt +3 | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.5 | kernel-default | 5.14.21-150500.55.73.1 | SUSE-SU-2024:2939-1 |
| openSUSE Leap Micro 5.5 | kernel-default-base | 5.14.21-150500.55.73.1.150500.6.33.8 | SUSE-SU-2024:2939-1 |
| openSUSE Leap Micro 5.5 | kernel-rt | 5.14.21-150500.13.64.1 | SUSE-SU-2024:2894-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | bpftool +13 | 5.15.0-210.163.7.el9uek | ELSA-2024-12618 |
Advisories 25
- WID-SEC-2024-1607 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 5, 2026
- USN-7007-1 linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-gkeop-5.15, linux-hwe-5.15, linux-ibm, linux-intel-iotg, linux-intel-iotg-5.15, linux-kvm, linux-nvidia, linux-oracle, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6999-1 linux, linux-aws, linux-gcp, linux-gke, linux-ibm, linux-lowlatency, linux-oem-6.8, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7009-1 linux-azure, linux-azure-5.15, linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7007-3 linux-lowlatency, linux-lowlatency-hwe-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7029-1 linux-hwe-6.8 Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7005-1 linux-nvidia, linux-nvidia-lowlatency vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7005-2 linux-nvidia-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7004-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7008-1 linux-lowlatency-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7019-1 linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6999-2 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7007-2 linux-ibm-5.15, linux-oracle-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7009-2 linux-azure-fde-5.15 vulnerabilities Ubuntu Security Notices (USN) · Aug 6, 2026
- SUSE-SU-2025:20008-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20028-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-4008-1 linux-6.1 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5731-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2024:2973-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2947-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2939-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2896-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2802-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2024:2894-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2024-12618 Important: Unbreakable Enterprise kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 12, 2024
References
- https://git.kernel.org/stable/c/7c3bb96a20cd8db3b8824b2ff08b6cde4505c7e5
- https://git.kernel.org/stable/c/dd42570018f5962c10f215ad9c21274ed5d3541e
- https://git.kernel.org/stable/c/e151ae1ee065cf4b8ce4394ddb9d9c8df6370c66
- https://git.kernel.org/stable/c/9004784e8d68bcd1ac1376407ba296fa28f04dbe
- https://git.kernel.org/stable/c/333e11bf47fa8d477db90e2900b1ed3c9ae9b697