CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-50029 – Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync
https://notcve.org/view.php?id=CVE-2024-50029
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync This checks if the ACL connection remains valid as it could be destroyed while hci_enhanced_setup_sync is pending on cmd_sync leading to the following trace: BUG: KASAN: slab-use-after-free in hci_enhanced_setup_sync+0x91b/0xa60 Read of size 1 at addr ffff888002328ffd by task kworker/u5:2/37 CPU: 0 UID: 0 PID: 37 Comm: kworker/u5:2 Not tainted 6.11.0-rc6-01300-g810be445d8d6 #7099 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 04/01/2014 Workqueue: hci0 hci_cmd_sync_work Call Trace: <TASK> dump_stack_lvl+0x5d/0x80 ? hci_enhanced_setup_sync+0x91b/0xa60 print_report+0x152/0x4c0 ? hci_enhanced_setup_sync+0x91b/0xa60 ? __virt_addr_valid+0x1fa/0x420 ? hci_enhanced_setup_sync+0x91b/0xa60 kasan_report+0xda/0x1b0 ? • https://git.kernel.org/stable/c/e07a06b4eb417f5271d33ce2240e93c62d98b7b4 https://git.kernel.org/stable/c/867639300759e3e1c5b1e1a5ff89231f263a32a7 https://git.kernel.org/stable/c/98ccd44002d88cbf4edfc4480df532a3da5a013e https://git.kernel.org/stable/c/18fd04ad856df07733f5bb07e7f7168e7443d393 •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-50028 – thermal: core: Reference count the zone in thermal_zone_get_by_id()
https://notcve.org/view.php?id=CVE-2024-50028
In the Linux kernel, the following vulnerability has been resolved: thermal: core: Reference count the zone in thermal_zone_get_by_id() There are places in the thermal netlink code where nothing prevents the thermal zone object from going away while being accessed after it has been returned by thermal_zone_get_by_id(). To address this, make thermal_zone_get_by_id() get a reference on the thermal zone device object to be returned with the help of get_device(), under thermal_list_lock, and adjust all of its callers to this change with the help of the cleanup.h infrastructure. • https://git.kernel.org/stable/c/1ce50e7d408ef2bdc8ca021363fd46d1b8bfad00 https://git.kernel.org/stable/c/c95538b286efc6109c987e97a051bc7844ede802 https://git.kernel.org/stable/c/a42a5839f400e929c489bb1b58f54596c4535167 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-50026 – scsi: wd33c93: Don't use stale scsi_pointer value
https://notcve.org/view.php?id=CVE-2024-50026
In the Linux kernel, the following vulnerability has been resolved: scsi: wd33c93: Don't use stale scsi_pointer value A regression was introduced with commit dbb2da557a6a ("scsi: wd33c93: Move the SCSI pointer to private command data") which results in an oops in wd33c93_intr(). That commit added the scsi_pointer variable and initialized it from hostdata->connected. However, during selection, hostdata->connected is not yet valid. Fix this by getting the current scsi_pointer from hostdata->selecting. • https://git.kernel.org/stable/c/dbb2da557a6a87c88bbb4b1fef037091b57f701b https://git.kernel.org/stable/c/3afeceda855dea9b85cddd96307d4d17c8742005 https://git.kernel.org/stable/c/e04642a207f1d2ae28a08624c04c67f5681f3451 https://git.kernel.org/stable/c/b60ff1a95c7c386cdd6153de3d7d85edaeabd800 https://git.kernel.org/stable/c/9023ed8d91eb1fcc93e64dc4962f7412b1c4cbec •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-50024 – net: Fix an unsafe loop on the list
https://notcve.org/view.php?id=CVE-2024-50024
In the Linux kernel, the following vulnerability has been resolved: net: Fix an unsafe loop on the list The kernel may crash when deleting a genetlink family if there are still listeners for that family: Oops: Kernel access of bad area, sig: 11 [#1] ... NIP [c000000000c080bc] netlink_update_socket_mc+0x3c/0xc0 LR [c000000000c0f764] __netlink_clear_multicast_users+0x74/0xc0 Call Trace: __netlink_clear_multicast_users+0x74/0xc0 genl_unregister_family+0xd4/0x2d0 Change the unsafe loop on the list to a safe one, because inside the loop there is an element removal from this list. • https://git.kernel.org/stable/c/b8273570f802a7658827dcb077b0b517ba75a289 https://git.kernel.org/stable/c/464801a0f6ccb52b21faa33bac6014fd74cc5e10 https://git.kernel.org/stable/c/8e0766fcf37ad8eed289dd3853628dd9b01b58b0 https://git.kernel.org/stable/c/68ad5da6ca630a276f0a5c924179e57724d00013 https://git.kernel.org/stable/c/1cdec792b2450105b1314c5123a9a0452cb2c2f0 https://git.kernel.org/stable/c/5f03a7f601f33cda1f710611625235dc86fd8a9e https://git.kernel.org/stable/c/3be342e0332a7c83eb26fbb22bf156fdca467a5d https://git.kernel.org/stable/c/49f9b726bf2bf3dd2caf0d27cadf4bc1c •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-50022 – device-dax: correct pgoff align in dax_set_mapping()
https://notcve.org/view.php?id=CVE-2024-50022
In the Linux kernel, the following vulnerability has been resolved: device-dax: correct pgoff align in dax_set_mapping() pgoff should be aligned using ALIGN_DOWN() instead of ALIGN(). Otherwise, vmf->address not aligned to fault_size will be aligned to the next alignment, that can result in memory failure getting the wrong address. It's a subtle situation that only can be observed in page_mapped_in_vma() after the page is page fault handled by dev_dax_huge_fault. Generally, there is little chance to perform page_mapped_in_vma in dev-dax's page unless in specific error injection to the dax device to trigger an MCE - memory-failure. In that case, page_mapped_in_vma() will be triggered to determine which task is accessing the failure address and kill that task in the end. We used self-developed dax device (which is 2M aligned mapping) , to perform error injection to random address. It turned out that error injected to non-2M-aligned address was causing endless MCE until panic. Because page_mapped_in_vma() kept resulting wrong address and the task accessing the failure address was never killed properly: [ 3783.719419] Memory failure: 0x200c9742: recovery action for dax page: Recovered [ 3784.049006] mce: Uncorrected hardware memory error in user-access at 200c9742380 [ 3784.049190] Memory failure: 0x200c9742: recovery action for dax page: Recovered [ 3784.448042] mce: Uncorrected hardware memory error in user-access at 200c9742380 [ 3784.448186] Memory failure: 0x200c9742: recovery action for dax page: Recovered [ 3784.792026] mce: Uncorrected hardware memory error in user-access at 200c9742380 [ 3784.792179] Memory failure: 0x200c9742: recovery action for dax page: Recovered [ 3785.162502] mce: Uncorrected hardware memory error in user-access at 200c9742380 [ 3785.162633] Memory failure: 0x200c9742: recovery action for dax page: Recovered [ 3785.461116] mce: Uncorrected hardware memory error in user-access at 200c9742380 [ 3785.461247] Memory failure: 0x200c9742: recovery action for dax page: Recovered [ 3785.764730] mce: Uncorrected hardware memory error in user-access at 200c9742380 [ 3785.764859] Memory failure: 0x200c9742: recovery action for dax page: Recovered [ 3786.042128] mce: Uncorrected hardware memory error in user-access at 200c9742380 [ 3786.042259] Memory failure: 0x200c9742: recovery action for dax page: Recovered [ 3786.464293] mce: Uncorrected hardware memory error in user-access at 200c9742380 [ 3786.464423] Memory failure: 0x200c9742: recovery action for dax page: Recovered [ 3786.818090] mce: Uncorrected hardware memory error in user-access at 200c9742380 [ 3786.818217] Memory failure: 0x200c9742: recovery action for dax page: Recovered [ 3787.085297] mce: Uncorrected hardware memory error in user-access at 200c9742380 [ 3787.085424] Memory failure: 0x200c9742: recovery action for dax page: Recovered It took us several weeks to pinpoint this problem, but we eventually used bpftrace to trace the page fault and mce address and successfully identified the issue. Joao added: ; Likely we never reproduce in production because we always pin : device-dax regions in the region align they provide (Qemu does : similarly with prealloc in hugetlb/file backed memory). • https://git.kernel.org/stable/c/b9b5777f09be84d0de472ded2253d2f5101427f2 https://git.kernel.org/stable/c/9c4198dfdca818c5ce19c764d90eabd156bbc6da https://git.kernel.org/stable/c/b822007e8db341d6f175c645ed79866db501ad86 https://git.kernel.org/stable/c/e877427d218159ac29c9326100920d24330c9ee6 https://git.kernel.org/stable/c/7fcbd9785d4c17ea533c42f20a9083a83f301fa6 •