CVSS: -EPSS: %CPEs: 6EXPL: 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/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/49f9b726bf2bf3dd2caf0d27cadf4bc1ccf7a7dd https://git.kernel.org/stable/c/1dae9f1187189bc09ff6d25ca97ead711f7e26f9 •
CVSS: -EPSS: %CPEs: 3EXPL: 0CVE-2024-50023 – net: phy: Remove LED entry from LEDs list on unregister
https://notcve.org/view.php?id=CVE-2024-50023
In the Linux kernel, the following vulnerability has been resolved: net: phy: Remove LED entry from LEDs list on unregister Commit c938ab4da0eb ("net: phy: Manual remove LEDs to ensure correct ordering") correctly fixed a problem with using devm_ but missed removing the LED entry from the LEDs list. This cause kernel panic on specific scenario where the port for the PHY is torn down and up and the kmod for the PHY is removed. On setting the port down the first time, the assosiacted LEDs are correctly unregistered. The associated kmod for the PHY is now removed. The kmod is now added again and the port is now put up, the associated LED are registered again. On putting the port down again for the second time after these step, the LED list now have 4 elements. With the first 2 already unregistered previously and the 2 new one registered again. This cause a kernel panic as the first 2 element should have been removed. Fix this by correctly removing the element when LED is unregistered. • https://git.kernel.org/stable/c/c938ab4da0eb1620ae3243b0b24c572ddfc318fc https://git.kernel.org/stable/c/143ffa7878e2d9d9c3836ee8304ce4930f7852a3 https://git.kernel.org/stable/c/fba363f4d244269a0ba7abb8df953a244c6749af https://git.kernel.org/stable/c/f50b5d74c68e551667e265123659b187a30fe3a5 •
CVSS: -EPSS: %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 •
CVSS: -EPSS: %CPEs: 2EXPL: 0CVE-2024-50021 – ice: Fix improper handling of refcount in ice_dpll_init_rclk_pins()
https://notcve.org/view.php?id=CVE-2024-50021
In the Linux kernel, the following vulnerability has been resolved: ice: Fix improper handling of refcount in ice_dpll_init_rclk_pins() This patch addresses a reference count handling issue in the ice_dpll_init_rclk_pins() function. The function calls ice_dpll_get_pins(), which increments the reference count of the relevant resources. However, if the condition WARN_ON((!vsi || !vsi->netdev)) is met, the function currently returns an error without properly releasing the resources acquired by ice_dpll_get_pins(), leading to a reference count leak. To resolve this, the check has been moved to the top of the function. • https://git.kernel.org/stable/c/d7999f5ea64bb10d2857b8cbfe973be373bac7c9 https://git.kernel.org/stable/c/aefecead9d08f4a35ab6f51ba2e408d2cef4e31d https://git.kernel.org/stable/c/ccca30a18e36a742e606d5bf0630e75be7711d0a •
CVSS: -EPSS: %CPEs: 3EXPL: 0CVE-2024-50020 – ice: Fix improper handling of refcount in ice_sriov_set_msix_vec_count()
https://notcve.org/view.php?id=CVE-2024-50020
In the Linux kernel, the following vulnerability has been resolved: ice: Fix improper handling of refcount in ice_sriov_set_msix_vec_count() This patch addresses an issue with improper reference count handling in the ice_sriov_set_msix_vec_count() function. First, the function calls ice_get_vf_by_id(), which increments the reference count of the vf pointer. If the subsequent call to ice_get_vf_vsi() fails, the function currently returns an error without decrementing the reference count of the vf pointer, leading to a reference count leak. The correct behavior, as implemented in this patch, is to decrement the reference count using ice_put_vf(vf) before returning an error when vsi is NULL. Second, the function calls ice_sriov_get_irqs(), which sets vf->first_vector_idx. If this call returns a negative value, indicating an error, the function returns an error without decrementing the reference count of the vf pointer, resulting in another reference count leak. The patch addresses this by adding a call to ice_put_vf(vf) before returning an error when vf->first_vector_idx < 0. This bug was identified by an experimental static analysis tool developed by our team. • https://git.kernel.org/stable/c/4d38cb44bd321c81da3457cfbc38501ed8cb6714 https://git.kernel.org/stable/c/3345e7cf0cf82027bff3b7878bd79214688e61da https://git.kernel.org/stable/c/416dbb815ca69684de148328990ba0ec53e6dbc1 https://git.kernel.org/stable/c/d517cf89874c6039e6294b18d66f40988e62502a •