In the Linux kernel, the following vulnerability has been resolved:
cifs: client: fix memory leak in smb3_fs_context_parse_param
The user calls fsconfig twice, but when the program exits, free() only frees ctx->source for the second fsconfig, not the first. Regarding fc->source, there is no code in the fs context related to its memory reclamation.
To fix this memory leak, release the source memory corresponding to ctx or fc before each parsing.
syzbot reported: BUG: memory leak unreferenced object 0xffff888128afa360 (size 96): backtrace (crc 79c9c7ba): kstrdup+0x3c/0x80 mm/util.c:84 smb3_fs_context_parse_param+0x229b/0x36c0 fs/smb/client/fs_context.c:1444
BUG: memory leak unreferenced object 0xffff888112c7d900 (size 96): backtrace (crc 79c9c7ba): smb3_fs_context_fullpath+0x70/0x1b0 fs/smb/client/fs_context.c:629 smb3_fs_context_parse_param+0x2266/0x36c0 fs/smb/client/fs_context.c:1438
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12-headersUpgrade kernel6.12-modules-extra-commonUpgrade bpftool6.12Upgrade kernel6.12-debuginfoUpgrade kernel6.12-libbpf-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade python3-perf6.12-debuginfoUpgrade kernel6.12-toolsUpgrade kernel6.12-modules-extraUpgrade kernel6.12-tools-debuginfoUpgrade perf6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-tools-develUpgrade kernel6.12-develUpgrade kernel6.12-libbpf-staticUpgrade python3-perf6.12Upgrade kernel6.12-libbpfUpgrade bpftool6.12-debuginfoUpgrade perf6.12-debuginfoUpgrade kernel-livepatch-6.12.63-84.121Upgrade kernel6.12Upgrade kernel6.12-libbpf-debuginfo | Feb 20, 2026 | Dec 6, 2025 |
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Oracle_linux | — | Upgrade kernel-uek | Jan 15, 2026 | Dec 6, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 6, 2025 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1052-gcp-fipsUpgrade linux-image-aws-64k-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gkeUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-6.8.0-1049-nvidia-lowlatencyUpgrade linux-image-6.8.0-1052-gcpUpgrade linux-image-raspi-6.17Upgrade linux-image-6.17.0-1008-raspiUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-ibm-6.8Upgrade linux-image-oracle-6.17Upgrade linux-image-xilinxUpgrade linux-image-fips-6.8Upgrade linux-image-raspi-realtimeUpgrade linux-image-6.8.0-1049-nvidiaUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-oem-6.17Upgrade linux-image-azure-fips-6.8Upgrade linux-image-oracleUpgrade linux-image-aws-64kUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-1047-oracleUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-gcpUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-gkeop-6.8Upgrade linux-image-kvmUpgrade linux-image-6.8.0-106-generic-64kUpgrade linux-image-6.17.0-1007-oracleUpgrade linux-image-6.17.0-1006-realtimeUpgrade linux-image-oem-22.04bUpgrade linux-image-6.17.0-1007-gcp-64kUpgrade linux-image-6.8.1-1045-realtimeUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-gcp-6.8Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-fipsUpgrade linux-image-intel-iotgUpgrade linux-image-6.8.0-1049-nvidia-64kUpgrade linux-image-6.8.0-1050-raspiUpgrade linux-image-aws-fips-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-gcp-6.17Upgrade linux-image-aws-6.17Upgrade linux-image-virtualUpgrade linux-image-generic-6.8Upgrade linux-image-6.17.0-14-generic-64kUpgrade linux-image-6.8.0-1048-gkeUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-azure-6.8Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1050-awsUpgrade linux-image-oem-22.04Upgrade linux-image-awsUpgrade linux-image-realtimeUpgrade linux-image-6.8.0-1050-aws-fipsUpgrade linux-image-oracle-64kUpgrade linux-image-6.17.0-1011-oemUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-generic-6.17Upgrade linux-image-generic-lpaeUpgrade linux-image-oracle-64k-6.17Upgrade linux-image-oem-22.04aUpgrade linux-image-6.8.0-1049-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1048-gke-64kUpgrade linux-image-6.17.0-1007-awsUpgrade linux-image-6.17.0-1007-aws-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-azure-6.17Upgrade linux-image-azureUpgrade linux-image-6.8.0-106-genericUpgrade linux-image-6.8.0-1029-xilinxUpgrade linux-image-6.8.0-1035-gkeopUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.8.0-1049-ibmUpgrade linux-image-6.17.0-1007-gcpUpgrade linux-image-azure-lts-24.04Upgrade linux-image-gke-64k-6.8Upgrade linux-image-6.17.0-1007-oracle-64kUpgrade linux-image-generic-64k-6.8Upgrade linux-image-6.8.0-2040-raspi-realtimeUpgrade linux-image-gcp-fipsUpgrade linux-image-raspiUpgrade linux-image-virtual-6.8Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-6.8.0-106-lowlatencyUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-6.17.0-1008-azureUpgrade linux-image-realtime-6.17Upgrade linux-image-lowlatencyUpgrade linux-image-oem-22.04cUpgrade linux-image-6.17.0-14-genericUpgrade linux-image-azure-fipsUpgrade linux-image-nvidia-6.8Upgrade linux-image-nvidiaUpgrade linux-image-generic-64k-6.17Upgrade linux-image-6.8.0-106-lowlatency-64kUpgrade linux-image-gcp-64k-6.17Upgrade linux-image-lowlatency-6.8Upgrade linux-image-gke-64kUpgrade linux-image-ibmUpgrade linux-image-6.8.0-1052-azure-fipsUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-generic-64kUpgrade linux-image-gke-6.8Upgrade linux-image-6.8.0-1047-oracle-64kUpgrade linux-image-gkeopUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-virtual-6.17Upgrade linux-image-realtime-6.8.1Upgrade linux-image-aws-lts-24.04Upgrade linux-image-gcp-64kUpgrade linux-image-nvidia-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-ibm-classicUpgrade linux-image-aws-64k-6.17Upgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1052-gcp-64kUpgrade linux-image-6.8.0-1050-aws-64kUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-oem-22.04dUpgrade linux-image-genericUpgrade linux-image-aws-fipsUpgrade linux-image-xilinx-6.8Upgrade linux-image-6.8.0-106-fipsUpgrade linux-image-raspi-6.8Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-oracle-6.8 | Feb 13, 2026 | Feb 12, 2026 |
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