Description
In the Linux kernel, the following vulnerability has been resolved:
dma-buf/sync_file: Don't leak fences on merge failure
Each add_fence() call does a dma_fence_get() on the relevant fence. In
the error path, we weren't calling dma_fence_put() so all those fences
got leaked. Also, in the krealloc_array failure case, we weren't
freeing the fences array. Instead, ensure that i and fences are always
zero-initialized and dma_fence_put() all the fences and kfree(fences) on
every error path.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 4.9 | 4.14.241 |
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 | 5.14.6-1 | — |
| Debian 13 | linux | 5.14.6-1 | — |
| Debian 12 | linux | 5.14.6-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +22 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-88.99 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1057.60 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1059.62 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1019.22 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1053.57 | — |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1024.25 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1005.6 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1047.49 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1055.59 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1044.48 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-159.167 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1112.119 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1057.60~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1124.137 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1059.62~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1109.123 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1053.57~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-87.98~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1100.102 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1081.89 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1055.59~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1044.48~18.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | 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-fips | 5.4.0-1034.40 | — |
| 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 | 4.15.0-2054.56 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2036.40 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1070.79 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2019.21 | — |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1112.119~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1124.137~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1109.123~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-159.167~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1081.89~16.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1124.137~14.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-150200.24.194.1.150200.9.99.1 | SUSE-SU-2024:2183-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.194.1 | SUSE-SU-2024:2183-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.188.1 | SUSE-SU-2024:1979-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.219.1 | SUSE-SU-2024:2184-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
| SLES for SAP 15 SP3 | kernel-docs +5 | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SLES for SAP 15 SP2 | kernel-default-base | 5.3.18-150200.24.194.1.150200.9.99.1 | SUSE-SU-2024:2183-1 |
| SLES for SAP 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.194.1 | SUSE-SU-2024:2183-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.188.1 | SUSE-SU-2024:1979-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.219.1 | SUSE-SU-2024:2184-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.188.1 | SUSE-SU-2024:1983-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
| SLE Micro 5.2 | kernel-rt +1 | 5.3.18-150300.172.1 | SUSE-SU-2024:2010-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
| SLE Micro 5.1 | kernel-rt +1 | 5.3.18-150300.172.1 | SUSE-SU-2024:2010-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_45 | 1-150300.7.3.1 | SUSE-SU-2024:2185-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-150200.24.194.1 | SUSE-SU-2024:2183-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_49 | 1-150200.5.3.1 | SUSE-SU-2024:2183-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.219.1 | SUSE-SU-2024:2184-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_57 | 1-8.3.1 | SUSE-SU-2024:2184-1 |
| SLE HPC 15 SP3 | kernel-64kb +6 | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SLE HPC 15 SP3 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
| SLE HPC 15 SP2 | kernel-default-base | 5.3.18-150200.24.194.1.150200.9.99.1 | SUSE-SU-2024:2183-1 |
| SLE HPC 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.194.1 | SUSE-SU-2024:2183-1 |
| SUSE Enterprise Storage 7.1 | kernel-64kb +6 | 5.3.18-150300.59.164.1 | SUSE-SU-2024:2185-1 |
| SUSE Enterprise Storage 7.1 | kernel-default-base | 5.3.18-150300.59.164.1.150300.18.96.1 | SUSE-SU-2024:2185-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | kernel-livepatch-4.14.241-184.433 | 1.0-0.amzn2 | ALAS2-2021-1696 |
| Amazon Linux 2 | perf +8 | 4.14.241-184.433.amzn2 | ALAS2-2021-1696 |
Advisories 7
- SUSE-SU-2024:1979-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1983-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2010-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2183-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2184-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2021-1696 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 2, 2025
- SUSE-SU-2024:2185-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
References
- https://git.kernel.org/stable/c/19f51c2529339280d2c8c6427cd3e21ddf1ac3f8
- https://git.kernel.org/stable/c/e0355a0ad31a1d677b2a4514206de4902bd550e8
- https://git.kernel.org/stable/c/41f45e91c92c8480242ea448d54e28c753b13902
- https://git.kernel.org/stable/c/0d514185ae792d3a1903c8e1a83899aa996705ce
- https://git.kernel.org/stable/c/19edcd97727aae9362444a859a24d99a8730cb27
- https://git.kernel.org/stable/c/ffe000217c5068c5da07ccb1c0f8cce7ad767435