In the Linux kernel, the following vulnerability has been resolved:
smb: Log an error when close_all_cached_dirs fails
Under low-memory conditions, close_all_cached_dirs() can't move the dentries to a separate list to dput() them once the locks are dropped. This will result in a "Dentry still in use" error, so add an error message that makes it clear this is what happened:
[ 495.281119] CIFS: VFS: \\otters.example.com\share Out of memory while dropping dentries [ 495.281595] ------------[ cut here ]------------ [ 495.281887] BUG: Dentry ffff888115531138{i=78,n=/} still in use (2) [unmount of cifs cifs] [ 495.282391] WARNING: CPU: 1 PID: 2329 at fs/dcache.c:1536 umount_check+0xc8/0xf0
Also, bail out of looping through all tcons as soon as a single allocation fails, since we're already in trouble, and kmalloc() attempts for subseqeuent tcons are likely to fail just like the first one did.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12-modules-extraUpgrade python3-perf6.12Upgrade kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel-tools-develUpgrade kernel6.12Upgrade kernel-headersUpgrade perf6.12Upgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-debuginfoUpgrade kernel-libbpfUpgrade kernel-libbpf-develUpgrade kernel-livepatch-6.12.35-55.103Upgrade perf6.12-debuginfoUpgrade kernel-libbpf-staticUpgrade kernel-toolsUpgrade kernel-modules-extra-commonUpgrade kernel-libbpf-debuginfoUpgrade kernel-develUpgrade bpftoolUpgrade python3-perf6.12-debuginfo | Sep 9, 2025 | Jul 10, 2025 |
| Debian | — | Upgrade linux | Jul 11, 2025 | Jul 11, 2025 |
| Redhat_linux | — | No solution exists | Jul 14, 2025 | Jul 10, 2025 |
| Ubuntu | — | Upgrade linux-image-kvmUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-generic-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.14.0-1014-realtimeUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-oem-22.04aUpgrade linux-image-aws-64k-6.8Upgrade linux-image-virtualUpgrade linux-image-oem-24.04aUpgrade linux-image-6.14.0-1015-awsUpgrade linux-image-generic-64k-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-6.14.0-1015-aws-64kUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-xilinxUpgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-gcpUpgrade linux-image-azure-lts-24.04Upgrade linux-image-azure-nvidia-6.14Upgrade linux-image-virtual-6.14Upgrade linux-image-ibm-classicUpgrade linux-image-oem-24.04Upgrade linux-image-oem-22.04cUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-gcp-6.14Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-azure-nvidiaUpgrade linux-image-oem-24.04bUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-ibm-6.8Upgrade linux-image-fips-6.8Upgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-gke-6.8Upgrade linux-image-aws-fips-6.8Upgrade linux-image-oracle-64kUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-oem-24.04cUpgrade linux-image-nvidia-64kUpgrade linux-image-6.14.0-1007-azure-nvidiaUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-lowlatencyUpgrade linux-image-aws-64k-6.14Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.14.0-1018-gcpUpgrade linux-image-generic-6.8Upgrade linux-image-raspi-realtimeUpgrade linux-image-azure-fipsUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-oracleUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-aws-64kUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-azure-fips-6.8Upgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-ibmUpgrade linux-image-gkeUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-1046-azureUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-6.14.0-1015-oracleUpgrade linux-image-oem-6.14Upgrade linux-image-aws-fipsUpgrade linux-image-raspi-6.8Upgrade linux-image-oracle-6.14Upgrade linux-image-gcp-fipsUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-realtime-6.8.1Upgrade linux-image-nvidiaUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-realtime-6.14Upgrade linux-image-generic-64k-6.14Upgrade linux-image-gcp-64k-6.14Upgrade linux-image-azure-6.14Upgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1046-awsUpgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-oem-22.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-raspiUpgrade linux-image-aws-6.14Upgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-generic-6.14Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-gkeopUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-fipsUpgrade linux-image-realtimeUpgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-xilinx-6.8Upgrade linux-image-6.14.0-34-genericUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-gke-64k-6.8Upgrade linux-image-gke-64kUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-lowlatency-64kUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-oracle-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-6.14.0-1014-oemUpgrade linux-image-6.14.0-1014-azureUpgrade linux-image-virtual-6.8Upgrade linux-image-awsUpgrade linux-image-oem-22.04dUpgrade linux-image-gcp-64kUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-lowlatency-6.8Upgrade linux-image-6.14.0-34-generic-64kUpgrade linux-image-genericUpgrade linux-image-gcp-6.8Upgrade linux-image-azureUpgrade linux-image-raspi-6.14Upgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-6.14.0-1016-raspiUpgrade linux-image-6.14.0-1015-oracle-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-6.14.0-1018-gcp-64k | Jul 14, 2025 | Jul 10, 2025 |
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