In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix uaf in l2cap_connect
[Syzbot reported] BUG: KASAN: slab-use-after-free in l2cap_connect.constprop.0+0x10d8/0x1270 net/bluetooth/l2cap_core.c:3949 Read of size 8 at addr ffff8880241e9800 by task kworker/u9:0/54
CPU: 0 UID: 0 PID: 54 Comm: kworker/u9:0 Not tainted 6.11.0-rc6-syzkaller-00268-g788220eee30d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: hci2 hci_rx_work Call Trace: <TASK> __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc3/0x620 mm/kasan/report.c:488 kasan_report+0xd9/0x110 mm/kasan/report.c:601 l2cap_connect.constprop.0+0x10d8/0x1270 net/bluetooth/l2cap_core.c:3949 l2cap_connect_req net/bluetooth/l2cap_core.c:4080 [inline] l2cap_bredr_sig_cmd net/bluetooth/l2cap_core.c:4772 [inline] l2cap_sig_channel net/bluetooth/l2cap_core.c:5543 [inline] l2cap_recv_frame+0xf0b/0x8eb0 net/bluetooth/l2cap_core.c:6825 l2cap_recv_acldata+0x9b4/0xb70 net/bluetooth/l2cap_core.c:7514 hci_acldata_packet net/bluetooth/hci_core.c:3791 [inline] hci_rx_work+0xaab/0x1610 net/bluetooth/hci_core.c:4028 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ...
Freed by task 5245: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579 poison_slab_object+0xf7/0x160 mm/kasan/common.c:240 __kasan_slab_free+0x32/0x50 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2256 [inline] slab_free mm/slub.c:4477 [inline] kfree+0x12a/0x3b0 mm/slub.c:4598 l2cap_conn_free net/bluetooth/l2cap_core.c:1810 [inline] kref_put include/linux/kref.h:65 [inline] l2cap_conn_put net/bluetooth/l2cap_core.c:1822 [inline] l2cap_conn_del+0x59d/0x730 net/bluetooth/l2cap_core.c:1802 l2cap_connect_cfm+0x9e6/0xf80 net/bluetooth/l2cap_core.c:7241 hci_connect_cfm include/net/bluetooth/hci_core.h:1960 [inline] hci_conn_failed+0x1c3/0x370 net/bluetooth/hci_conn.c:1265 hci_abort_conn_sync+0x75a/0xb50 net/bluetooth/hci_sync.c:5583 abort_conn_sync+0x197/0x360 net/bluetooth/hci_conn.c:2917 hci_cmd_sync_work+0x1a4/0x410 net/bluetooth/hci_sync.c:328 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Dec 2, 2024 | Oct 21, 2024 |
| Oracle_linux | — | Upgrade kernel-uek | Feb 10, 2025 | Oct 21, 2024 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rtNo solution exists | May 15, 2025 | Oct 21, 2024 |
| Ubuntu | — | Upgrade linux-image-gcp-lts-20.04Upgrade linux-image-5.15.0-1081-gcpUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-generic-64kUpgrade linux-image-lowlatency-5.4Upgrade linux-image-xilinx-zynqmp-5.4Upgrade linux-image-5.15.0-1077-gkeUpgrade linux-image-lowlatency-64kUpgrade linux-image-gcp-lts-18.04Upgrade linux-image-realtimeUpgrade linux-image-5.15.0-1033-nvidia-tegra-rtUpgrade linux-image-generic-lts-xenialUpgrade linux-image-azure-fips-4.15Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-5.15.0-1072-ibmUpgrade linux-image-5.15.0-1076-kvmUpgrade linux-image-azure-4.15Upgrade linux-image-6.8.0-1020-oracle-64kUpgrade linux-image-genericUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-oem-22.04dUpgrade linux-image-4.15.0-2121-aws-fipsUpgrade linux-image-5.4.0-1108-bluefieldUpgrade linux-image-5.4.0-220-genericUpgrade linux-image-6.8.0-1025-azureUpgrade linux-image-5.15.0-1077-oracleUpgrade linux-image-nvidiaUpgrade linux-image-5.15.0-1086-azureUpgrade linux-image-5.15.0-1083-azure-fipsUpgrade linux-image-virtual-lts-xenialUpgrade linux-image-6.8.0-57-generic-64kUpgrade linux-image-generic-hwe-16.04Upgrade linux-image-raspi-hwe-18.04Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-6.8.0-1024-oemUpgrade linux-image-5.4.0-1147-oracleUpgrade linux-image-5.15.0-135-lowlatency-64kUpgrade linux-image-gkeop-5.15Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-oem-24.04Upgrade linux-image-5.4.0-1155-azure-fipsUpgrade linux-image-aws-fipsUpgrade linux-image-generic-lpaeUpgrade linux-image-5.4.0-1154-azureUpgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-generic-lpae-5.4Upgrade linux-image-oem-20.04cUpgrade linux-image-4.15.0-2084-gcp-fipsUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-oem-osp1Upgrade linux-image-oem-22.04Upgrade linux-image-6.8.0-1025-azure-fdeUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-oracle-lts-20.04Upgrade linux-image-virtualUpgrade linux-image-azure-lts-18.04Upgrade linux-image-6.8.0-1019-raspiUpgrade linux-image-gkeUpgrade linux-image-kvm-5.4Upgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-5.15.0-1079-gcpUpgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-1022-nvidiaUpgrade linux-image-oemUpgrade linux-image-4.4.0-1147-kvmUpgrade linux-image-4.15.0-2100-azure-fipsUpgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-aws-lts-18.04Upgrade linux-image-oracle-4.15Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-oem-20.04bUpgrade linux-image-bluefieldUpgrade linux-image-oem-22.04cUpgrade linux-image-4.15.0-1166-kvmUpgrade linux-image-nvidia-6.8Upgrade linux-image-oracle-lts-18.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-oem-24.04bUpgrade linux-image-intelUpgrade linux-image-fipsUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-oracleUpgrade linux-image-intel-iotgUpgrade linux-image-gkeopUpgrade linux-image-4.4.0-271-lowlatencyUpgrade linux-image-5.15.0-1044-xilinx-zynqmpUpgrade linux-image-oem-24.04aUpgrade linux-image-5.15.0-135-generic-lpaeUpgrade linux-image-5.15.0-1073-intel-iot-realtimeUpgrade linux-image-gcp-4.15Upgrade linux-image-5.4.0-1148-oracleUpgrade linux-image-6.8.0-57-genericUpgrade linux-image-5.4.0-1132-raspiUpgrade linux-image-5.15.0-1074-raspiUpgrade linux-image-5.15.0-1075-intel-iotgUpgrade linux-image-5.15.0-1084-azureUpgrade linux-image-azure-lts-22.04Upgrade linux-image-virtual-hwe-18.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-nvidia-tegraUpgrade linux-image-4.15.0-240-genericUpgrade linux-image-5.15.0-1080-awsUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-5.4.0-1152-gcp-fipsUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-oem-20.04Upgrade linux-image-5.15.0-135-genericUpgrade linux-image-4.4.0-271-genericUpgrade linux-image-4.15.0-1183-awsUpgrade linux-image-6.8.0-1020-oracleUpgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-5.4.0-220-generic-lpaeUpgrade linux-image-azure-fips-5.4Upgrade linux-image-5.15.0-136-generic-lpaeUpgrade linux-image-5.4.0-1067-xilinx-zynqmpUpgrade linux-image-5.15.0-1074-nvidiaUpgrade linux-image-5.4.0-220-lowlatencyUpgrade linux-image-6.11.0-1015-oemUpgrade linux-image-4.4.0-1116-fipsUpgrade linux-image-5.4.0-1152-gcpUpgrade linux-image-5.15.0-1074-nvidia-lowlatencyUpgrade linux-image-5.15.0-136-genericUpgrade linux-image-6.8.0-1022-nvidia-lowlatency-64kUpgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-raspi-5.4Upgrade linux-image-ibm-5.4Upgrade linux-image-6.8.0-1024-gcp-64kUpgrade linux-image-bluefield-5.4Upgrade linux-image-azure-fipsUpgrade linux-image-azureUpgrade linux-image-oracle-5.4Upgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1023-awsUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-raspiUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-5.15.0-1079-gcp-fipsUpgrade linux-image-aws-lts-22.04Upgrade linux-image-oem-20.04dUpgrade linux-image-5.15.0-135-lowlatencyUpgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-fips-5.4Upgrade linux-image-aws-5.4Upgrade linux-image-gcp-fips-5.4Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-nvidia-64kUpgrade linux-image-5.4.0-1095-ibmUpgrade linux-image-6.8.0-54-genericUpgrade linux-image-5.15.0-1086-azure-fdeUpgrade linux-image-5.4.0-1136-kvmUpgrade linux-image-5.15.0-136-generic-64kUpgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-6.8.0-1006-gkeopUpgrade linux-image-fips-5.4Upgrade linux-image-awsUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-virtual-hwe-16.04Upgrade linux-image-azure-fdeUpgrade linux-image-azure-5.4Upgrade linux-image-5.4.0-1149-aws-fipsUpgrade linux-image-6.8.0-1022-ibmUpgrade linux-image-raspi-nolpaeUpgrade linux-image-lowlatency-lts-xenialUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-generic-5.4Upgrade linux-image-6.8.0-54-lowlatencyUpgrade linux-image-6.8.0-1022-nvidia-lowlatencyUpgrade linux-image-5.15.0-1021-nvidia-tegra-igx-rtUpgrade linux-image-4.15.0-1191-azureUpgrade linux-image-gkeop-6.8Upgrade linux-image-gcp-fipsUpgrade linux-image-aws-fips-4.15Upgrade linux-image-6.11.0-1009-azureUpgrade linux-image-6.8.0-1024-gcpUpgrade linux-image-6.8.0-1022-nvidia-64kUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-4.15.0-240-lowlatencyUpgrade linux-image-oem-22.04bUpgrade linux-image-gcp-fips-4.15Upgrade linux-image-azure-cvmUpgrade linux-image-gcp-5.4Upgrade linux-image-raspi2Upgrade linux-image-azure-lts-24.04Upgrade linux-image-5.15.0-1021-nvidia-tegra-igxUpgrade linux-image-4.4.0-1146-awsUpgrade linux-image-kvmUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-aws-lts-20.04Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-4.4.0-1184-awsUpgrade linux-image-4.15.0-1138-fipsUpgrade linux-image-6.8.0-1019-gkeUpgrade linux-image-5.15.0-135-generic-64kUpgrade linux-image-5.15.0-1062-gkeopUpgrade linux-image-5.4.0-1149-awsUpgrade linux-image-ibmUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-gke-5.15Upgrade linux-image-azure-nvidiaUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-5.15.0-1080-aws-fipsUpgrade linux-image-4.15.0-1145-oracleUpgrade linux-image-5.15.0-1074-ibmUpgrade linux-image-oem-22.04aUpgrade linux-image-5.4.0-1053-iotUpgrade linux-image-5.15.0-1033-nvidia-tegraUpgrade linux-image-5.15.0-135-fipsUpgrade linux-image-ibm-classicUpgrade linux-image-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-54-generic-64kUpgrade linux-image-azure-lts-20.04Upgrade linux-image-6.11.0-1009-awsUpgrade linux-image-6.8.0-54-lowlatency-64kUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1077-intel-iotgUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-virtual-5.4Upgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-aws-hweUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-5.4.0-1123-fipsUpgrade linux-image-aws-4.15Upgrade linux-image-5.15.0-1080-realtimeUpgrade linux-image-snapdragon-5.4Upgrade linux-image-4.15.0-1176-gcpUpgrade linux-image-generic-hwe-22.04 | Feb 20, 2025 | Oct 21, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | Oct 21, 2024 |
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