In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix UAF in async decryption
Doing an async decryption (large read) crashes with a slab-use-after-free way down in the crypto API.
Reproducer: # mount.cifs -o ...,seal,esize=1 //srv/share /mnt # dd if=/mnt/largefile of=/dev/null ... [ 194.196391] ================================================================== [ 194.196844] BUG: KASAN: slab-use-after-free in gf128mul_4k_lle+0xc1/0x110 [ 194.197269] Read of size 8 at addr ffff888112bd0448 by task kworker/u77:2/899 [ 194.197707] [ 194.197818] CPU: 12 UID: 0 PID: 899 Comm: kworker/u77:2 Not tainted 6.11.0-lku-00028-gfca3ca14a17a-dirty #43 [ 194.198400] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.2-3-gd478f380-prebuilt.qemu.org 04/01/2014 [ 194.199046] Workqueue: smb3decryptd smb2_decrypt_offload [cifs] [ 194.200032] Call Trace: [ 194.200191] <TASK> [ 194.200327] dump_stack_lvl+0x4e/0x70 [ 194.200558] ? gf128mul_4k_lle+0xc1/0x110 [ 194.200809] print_report+0x174/0x505 [ 194.201040] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 194.201352] ? srso_return_thunk+0x5/0x5f [ 194.201604] ? __virt_addr_valid+0xdf/0x1c0 [ 194.201868] ? gf128mul_4k_lle+0xc1/0x110 [ 194.202128] kasan_report+0xc8/0x150 [ 194.202361] ? gf128mul_4k_lle+0xc1/0x110 [ 194.202616] gf128mul_4k_lle+0xc1/0x110 [ 194.202863] ghash_update+0x184/0x210 [ 194.203103] shash_ahash_update+0x184/0x2a0 [ 194.203377] ? __pfx_shash_ahash_update+0x10/0x10 [ 194.203651] ? srso_return_thunk+0x5/0x5f [ 194.203877] ? crypto_gcm_init_common+0x1ba/0x340 [ 194.204142] gcm_hash_assoc_remain_continue+0x10a/0x140 [ 194.204434] crypt_message+0xec1/0x10a0 [cifs] [ 194.206489] ? __pfx_crypt_message+0x10/0x10 [cifs] [ 194.208507] ? srso_return_thunk+0x5/0x5f [ 194.209205] ? srso_return_thunk+0x5/0x5f [ 194.209925] ? srso_return_thunk+0x5/0x5f [ 194.210443] ? srso_return_thunk+0x5/0x5f [ 194.211037] decrypt_raw_data+0x15f/0x250 [cifs] [ 194.212906] ? __pfx_decrypt_raw_data+0x10/0x10 [cifs] [ 194.214670] ? srso_return_thunk+0x5/0x5f [ 194.215193] smb2_decrypt_offload+0x12a/0x6c0 [cifs]
This is because TFM is being used in parallel.
Fix this by allocating a new AEAD TFM for async decryption, but keep the existing one for synchronous READ cases (similar to what is done in smb3_calc_signature()).
Also remove the calls to aead_request_set_callback() and crypto_wait_req() since it's always going to be a synchronous operation.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.15.184-125.190Upgrade kernel-debuginfoUpgrade python-perfUpgrade kernel-headersUpgrade bpftool-debuginfoUpgrade kernelUpgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade kernel-develUpgrade kernel-livepatch-5.10.237-230.949Upgrade bpftoolUpgrade perf-debuginfo | May 30, 2025 | Oct 21, 2024 |
| Amazon_linux_2023 | — | Upgrade python3-perf-debuginfoUpgrade kernel-modules-extraUpgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernel-libbpfUpgrade kernel-toolsUpgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade kernel-livepatch-6.1.128-136.201Upgrade kernel-debuginfoUpgrade python3-perfUpgrade perf-debuginfoUpgrade kernelUpgrade kernel-modules-extra-commonUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade kernel-develUpgrade kernel-libbpf-staticUpgrade kernel-libbpf-devel | Feb 26, 2025 | Oct 21, 2024 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Feb 10, 2025 | Oct 21, 2024 |
| Dell Powerstore Dsa2025223 | — | Upgrade Dell PowerStoreOS to the latest version | Oct 23, 2025 | May 27, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-tools-libsUpgrade kernel-toolsUpgrade bpftoolUpgrade python3-perfUpgrade kernelUpgrade kernel-abi-stablelists | Feb 11, 2025 | Oct 21, 2024 |
| Huawei Euleros 2_0_sp12 | — | Upgrade bpftoolUpgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel | Feb 11, 2025 | Oct 21, 2024 |
| Oracle_linux | — | Upgrade kernel-uek | Jul 17, 2025 | Oct 21, 2024 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rtNo solution exists | May 15, 2025 | Oct 21, 2024 |
| Ubuntu | — | Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-5.4.0-1135-kvmUpgrade linux-image-generic-lpaeUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-fips-5.4Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-6.8.0-56-genericUpgrade linux-image-5.15.0-143-lowlatency-64kUpgrade linux-image-nvidia-tegraUpgrade linux-image-generic-5.15Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-6.8.0-1027-awsUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-5.4.0-1153-azureUpgrade linux-image-5.15.0-1029-nvidia-tegra-igxUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-aws-lts-22.04Upgrade linux-image-oem-22.04aUpgrade linux-image-fipsUpgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-oem-24.04bUpgrade linux-image-oem-20.04dUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-bluefieldUpgrade linux-image-virtual-5.4Upgrade linux-image-lowlatency-64kUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-ibm-5.4Upgrade linux-image-5.15.0-1086-gcpUpgrade linux-image-gcp-5.4Upgrade linux-image-oem-22.04Upgrade linux-image-kvm-5.4Upgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-oem-20.04bUpgrade linux-image-gkeopUpgrade linux-image-6.8.0-1026-gcp-64kUpgrade linux-image-genericUpgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-5.15.0-1083-intel-iotgUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-azure-5.4Upgrade linux-image-fips-5.15Upgrade linux-image-oem-osp1Upgrade linux-image-gcp-lts-20.04Upgrade linux-image-6.8.0-1024-nvidia-lowlatency-64kUpgrade linux-image-5.4.0-1148-aws-fipsUpgrade linux-image-oem-24.04aUpgrade linux-image-5.15.0-1080-intel-iot-realtimeUpgrade linux-image-gkeop-6.8Upgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-aws-5.4Upgrade linux-image-azure-lts-20.04Upgrade linux-image-5.15.0-1029-nvidia-tegra-igx-rtUpgrade linux-image-5.15.0-143-genericUpgrade linux-image-kvm-5.15Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-oracleUpgrade linux-image-raspi-realtimeUpgrade linux-image-lowlatencyUpgrade linux-image-azure-lts-24.04Upgrade linux-image-6.8.0-1024-nvidia-64kUpgrade linux-image-generic-5.4Upgrade linux-image-5.15.0-1094-azure-fipsUpgrade linux-image-azure-fdeUpgrade linux-image-5.4.0-1131-raspiUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-raspi2Upgrade linux-image-oem-22.04bUpgrade linux-image-gke-5.15Upgrade linux-image-azure-nvidiaUpgrade linux-image-snapdragon-5.4Upgrade linux-image-raspi-nolpaeUpgrade linux-image-6.8.0-1024-oemUpgrade linux-image-5.15.0-1094-azureUpgrade linux-image-6.8.0-1022-oracle-64kUpgrade linux-image-5.15.0-1087-awsUpgrade linux-image-5.15.0-1069-gkeopUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-oracle-5.4Upgrade linux-image-azure-fipsUpgrade linux-image-5.15.0-1087-realtimeUpgrade linux-image-virtualUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-ibmUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-azure-lts-22.04Upgrade linux-image-gcpUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-intelUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-aws-lts-20.04Upgrade linux-image-5.15.0-1040-nvidia-tegraUpgrade linux-image-generic-64kUpgrade linux-image-6.8.0-1024-nvidia-lowlatencyUpgrade linux-image-6.8.0-57-generic-64kUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-nvidiaUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-bluefield-5.4Upgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-1026-gcpUpgrade linux-image-6.8.0-1024-nvidiaUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-5.4.0-1122-fipsUpgrade linux-image-5.15.0-1084-gkeUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1021-gkeUpgrade linux-image-6.8.0-1025-azure-fdeUpgrade linux-image-aws-64k-5.15Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-5.15.0-1082-intel-iotgUpgrade linux-image-raspiUpgrade linux-image-oracle-lts-20.04Upgrade linux-image-azure-fips-5.4Upgrade linux-image-5.4.0-1146-oracleUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-5.15.0-1084-oracleUpgrade linux-image-virtual-5.15Upgrade linux-image-5.15.0-143-generic-lpaeUpgrade linux-image-6.8.0-56-generic-64kUpgrade linux-image-realtimeUpgrade linux-image-5.4.0-1052-iotUpgrade linux-image-nvidia-6.8Upgrade linux-image-5.15.0-143-fipsUpgrade linux-image-5.15.0-1087-aws-fipsUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-5.15.0-1092-azureUpgrade linux-image-gcp-fips-5.4Upgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-kvmUpgrade linux-image-aws-lts-24.04Upgrade linux-image-oem-20.04Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-6.11.0-1009-awsUpgrade linux-image-5.15.0-1051-xilinx-zynqmpUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-5.15.0-1040-nvidia-tegra-rtUpgrade linux-image-gcp-5.15Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-5.4.0-1107-bluefieldUpgrade linux-image-generic-64k-5.15Upgrade linux-image-virtual-hwe-18.04Upgrade linux-image-6.8.0-56-lowlatencyUpgrade linux-image-nvidia-64kUpgrade linux-image-5.15.0-1079-ibmUpgrade linux-image-5.15.0-1087-aws-64kUpgrade linux-image-5.4.0-1151-gcp-fipsUpgrade linux-image-aws-5.15Upgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-xilinx-zynqmp-5.4Upgrade linux-image-oracle-64kUpgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-azure-cvmUpgrade linux-image-lowlatency-5.4Upgrade linux-image-5.15.0-143-generic-64kUpgrade linux-image-aws-fipsUpgrade linux-image-5.15.0-143-lowlatencyUpgrade linux-image-oracle-5.15Upgrade linux-image-6.8.0-1025-awsUpgrade linux-image-azureUpgrade linux-image-5.4.0-219-generic-lpaeUpgrade linux-image-6.8.1-1018-realtimeUpgrade linux-image-raspi-5.15Upgrade linux-image-oem-22.04cUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-5.4.0-1094-ibmUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-6.8.0-1022-oracleUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-azure-fips-5.15Upgrade linux-image-5.4.0-1151-gcpUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-5.4.0-219-lowlatencyUpgrade linux-image-6.8.0-1008-gkeopUpgrade linux-image-aws-fips-5.15Upgrade linux-image-oemUpgrade linux-image-5.15.0-1083-raspiUpgrade linux-image-5.4.0-1148-awsUpgrade linux-image-5.15.0-1083-kvmUpgrade linux-image-gcp-fipsUpgrade linux-image-ibm-5.15Upgrade linux-image-5.15.0-1081-nvidia-lowlatencyUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-azure-5.15Upgrade linux-image-oem-24.04Upgrade linux-image-raspi-hwe-18.04Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.8.0-57-genericUpgrade linux-image-6.8.0-56-lowlatency-64kUpgrade linux-image-oem-20.04cUpgrade linux-image-awsUpgrade linux-image-5.4.0-1154-azure-fipsUpgrade linux-image-nvidia-5.15Upgrade linux-image-6.11.0-1015-oemUpgrade linux-image-5.15.0-1086-gcp-fipsUpgrade linux-image-intel-iotgUpgrade linux-image-gkeop-5.15Upgrade linux-image-aws-fips-5.4Upgrade linux-image-gkeUpgrade linux-image-generic-lpae-5.4Upgrade linux-image-6.8.0-1022-ibmUpgrade linux-image-5.4.0-219-genericUpgrade linux-image-5.4.0-1066-xilinx-zynqmpUpgrade linux-image-6.8.0-1025-azureUpgrade linux-image-lowlatency-5.15Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-raspi-5.4Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-gcp-64kUpgrade linux-image-oem-22.04dUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-5.15.0-1081-nvidiaUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-nvidia-tegra-igx | Feb 20, 2025 | Oct 21, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Oct 21, 2024 |
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