CVSS: 4.7EPSS: 0%CPEs: 4EXPL: 0CVE-2024-26656 – drm/amdgpu: fix use-after-free bug
https://notcve.org/view.php?id=CVE-2024-26656
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix use-after-free bug The bug can be triggered by sending a single amdgpu_gem_userptr_ioctl to the AMDGPU DRM driver on any ASICs with an invalid address and size. The bug was reported by Joonkyo Jung <joonkyoj@yonsei.ac.kr>. For example the following code: static void Syzkaller1(int fd) { struct drm_amdgpu_gem_userptr arg; int ret; arg.addr = 0xffffffffffff0000; arg.size = 0x80000000; /*2 Gb*/ arg.flags = 0x7; ret = drmIoctl(fd, 0xc1186451/*amdgpu_gem_userptr_ioctl*/, &arg); } Due to the address and size are not valid there is a failure in amdgpu_hmm_register->mmu_interval_notifier_insert->__mmu_interval_notifier_insert-> check_shl_overflow, but we even the amdgpu_hmm_register failure we still call amdgpu_hmm_unregister into amdgpu_gem_object_free which causes access to a bad address. The following stack is below when the issue is reproduced when Kazan is enabled: [ +0.000014] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020 [ +0.000009] RIP: 0010:mmu_interval_notifier_remove+0x327/0x340 [ +0.000017] Code: ff ff 49 89 44 24 08 48 b8 00 01 00 00 00 00 ad de 4c 89 f7 49 89 47 40 48 83 c0 22 49 89 47 48 e8 ce d1 2d 01 e9 32 ff ff ff <0f> 0b e9 16 ff ff ff 4c 89 ef e8 fa 14 b3 ff e9 36 ff ff ff e8 80 [ +0.000014] RSP: 0018:ffffc90002657988 EFLAGS: 00010246 [ +0.000013] RAX: 0000000000000000 RBX: 1ffff920004caf35 RCX: ffffffff8160565b [ +0.000011] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8881a9f78260 [ +0.000010] RBP: ffffc90002657a70 R08: 0000000000000001 R09: fffff520004caf25 [ +0.000010] R10: 0000000000000003 R11: ffffffff8161d1d6 R12: ffff88810e988c00 [ +0.000010] R13: ffff888126fb5a00 R14: ffff88810e988c0c R15: ffff8881a9f78260 [ +0.000011] FS: 00007ff9ec848540(0000) GS:ffff8883cc880000(0000) knlGS:0000000000000000 [ +0.000012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ +0.000010] CR2: 000055b3f7e14328 CR3: 00000001b5770000 CR4: 0000000000350ef0 [ +0.000010] Call Trace: [ +0.000006] <TASK> [ +0.000007] ? show_regs+0x6a/0x80 [ +0.000018] ? __warn+0xa5/0x1b0 [ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340 [ +0.000018] ? report_bug+0x24a/0x290 [ +0.000022] ? • https://git.kernel.org/stable/c/e87e08c94c9541b4e18c4c13f2f605935f512605 https://git.kernel.org/stable/c/af054a5fb24a144f99895afce9519d709891894c https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e https://access.redhat.com/security/cve/CVE-2024-26656 https://bugzilla.redhat.com/show_bug.cgi?id=2272692 • CWE-416: Use After Free •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-26648 – drm/amd/display: Fix variable deferencing before NULL check in edp_setup_replay()
https://notcve.org/view.php?id=CVE-2024-26648
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix variable deferencing before NULL check in edp_setup_replay() In edp_setup_replay(), 'struct dc *dc' & 'struct dmub_replay *replay' was dereferenced before the pointer 'link' & 'replay' NULL check. Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:947 edp_setup_replay() warn: variable dereferenced before check 'link' (see line 933) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: drm/amd/display: se corrigió la diferenciación de variables antes de la verificación NULL en edp_setup_replay() En edp_setup_replay(), se eliminó la referencia a 'struct dc *dc' y 'struct dmub_replay *replay' antes de la comprobación NULL del puntero 'enlace' y 'repetición'. Corrige lo siguiente: drivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:947 edp_setup_replay() advertencia: variable desreferenciada antes de marcar 'enlace' (ver línea 933) • https://git.kernel.org/stable/c/22ae604aea14756954e1c00ae653e34d2afd2935 https://git.kernel.org/stable/c/c02d257c654191ecda1dc1af6875d527e85310e7 https://git.kernel.org/stable/c/7073934f5d73f8b53308963cee36f0d389ea857c •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-26647 – drm/amd/display: Fix late derefrence 'dsc' check in 'link_set_dsc_pps_packet()'
https://notcve.org/view.php?id=CVE-2024-26647
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix late derefrence 'dsc' check in 'link_set_dsc_pps_packet()' In link_set_dsc_pps_packet(), 'struct display_stream_compressor *dsc' was dereferenced in a DC_LOGGER_INIT(dsc->ctx->logger); before the 'dsc' NULL pointer check. Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dpms.c:905 link_set_dsc_pps_packet() warn: variable dereferenced before check 'dsc' (see line 903) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: drm/amd/display: se corrigió la verificación de desrefrence tardía 'dsc' en 'link_set_dsc_pps_packet()'. En link_set_dsc_pps_packet(), se eliminó la referencia a 'struct display_stream_compressor *dsc' en un DC_LOGGER_INIT(dsc- >ctx->registrador); antes de la verificación del puntero NULL 'dsc'. Corrige lo siguiente: drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dpms.c:905 link_set_dsc_pps_packet() advertencia: variable desreferenciada antes de verificar 'dsc' (consulte la línea 903) • https://git.kernel.org/stable/c/6aa5ede6665122f4c8abce3c6eba06b49e54d25c https://git.kernel.org/stable/c/cf656fc7276e5b3709a81bc9d9639459be2b2647 https://git.kernel.org/stable/c/3bb9b1f958c3d986ed90a3ff009f1e77e9553207 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-26646 – thermal: intel: hfi: Add syscore callbacks for system-wide PM
https://notcve.org/view.php?id=CVE-2024-26646
In the Linux kernel, the following vulnerability has been resolved: thermal: intel: hfi: Add syscore callbacks for system-wide PM The kernel allocates a memory buffer and provides its location to the hardware, which uses it to update the HFI table. This allocation occurs during boot and remains constant throughout runtime. When resuming from hibernation, the restore kernel allocates a second memory buffer and reprograms the HFI hardware with the new location as part of a normal boot. The location of the second memory buffer may differ from the one allocated by the image kernel. When the restore kernel transfers control to the image kernel, its HFI buffer becomes invalid, potentially leading to memory corruption if the hardware writes to it (the hardware continues to use the buffer from the restore kernel). It is also possible that the hardware "forgets" the address of the memory buffer when resuming from "deep" suspend. Memory corruption may also occur in such a scenario. To prevent the described memory corruption, disable HFI when preparing to suspend or hibernate. Enable it when resuming. Add syscore callbacks to handle the package of the boot CPU (packages of non-boot CPUs are handled via CPU offline). • https://git.kernel.org/stable/c/28f010dc50df0f7987c04112114fcfa7e0803566 https://git.kernel.org/stable/c/019ccc66d56a696a4dfee3bfa2f04d0a7c3d89ee https://git.kernel.org/stable/c/c9d6d63b6c03afaa6f185df249af693a7939577c https://git.kernel.org/stable/c/97566d09fd02d2ab329774bb89a2cdf2267e86d9 •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2023-52625 – drm/amd/display: Refactor DMCUB enter/exit idle interface
https://notcve.org/view.php?id=CVE-2023-52625
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Refactor DMCUB enter/exit idle interface [Why] We can hang in place trying to send commands when the DMCUB isn't powered on. [How] We need to exit out of the idle state prior to sending a command, but the process that performs the exit also invokes a command itself. Fixing this issue involves the following: 1. Using a software state to track whether or not we need to start the process to exit idle or notify idle. It's possible for the hardware to have exited an idle state without driver knowledge, but entering one is always restricted to a driver allow - which makes the SW state vs HW state mismatch issue purely one of optimization, which should seldomly be hit, if at all. 2. Refactor any instances of exit/notify idle to use a single wrapper that maintains this SW state. This works simialr to dc_allow_idle_optimizations, but works at the DMCUB level and makes sure the state is marked prior to any notify/exit idle so we don't enter an infinite loop. 3. Make sure we exit out of idle prior to sending any commands or waiting for DMCUB idle. This patch takes care of 1/2. A future patch will take care of wrapping DMCUB command submission with calls to this new interface. • https://git.kernel.org/stable/c/820c3870c491946a78950cdf961bf40e28c1025f https://git.kernel.org/stable/c/8e57c06bf4b0f51a4d6958e15e1a99c9520d00fa •