{ "schema_version": "1.6.1", "id": "RPI-CVE-2024-35927", "modified": "2026-10-07T17:22:01Z", "upstream": [ "CVE-2024-35927" ], "published": "2024-05-19T10:11:49Z", "summary": "drm: Check output polling initialized before disabling", "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Check output polling initialized before disabling\n\nIn drm_kms_helper_poll_disable() check if output polling\nsupport is initialized before disabling polling. If not flag\nthis as a warning.\nAdditionally in drm_mode_config_helper_suspend() and\ndrm_mode_config_helper_resume() calls, that re the callers of these\nfunctions, avoid invoking them if polling is not initialized.\nFor drivers like hyperv-drm, that do not initialize connector\npolling, if suspend is called without this check, it leads to\nsuspend failure with following stack\n[ 770.719392] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.\n[ 770.720592] printk: Suspending console(s) (use no_console_suspend to debug)\n[ 770.948823] ------------[ cut here ]------------\n[ 770.948824] WARNING: CPU: 1 PID: 17197 at kernel/workqueue.c:3162 __flush_work.isra.0+0x212/0x230\n[ 770.948831] Modules linked in: rfkill nft_counter xt_conntrack xt_owner udf nft_compat crc_itu_t nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables nfnetlink vfat fat mlx5_ib ib_uverbs ib_core mlx5_core intel_rapl_msr intel_rapl_common kvm_amd ccp mlxfw kvm psample hyperv_drm tls drm_shmem_helper drm_kms_helper irqbypass pcspkr syscopyarea sysfillrect sysimgblt hv_balloon hv_utils joydev drm fuse xfs libcrc32c pci_hyperv pci_hyperv_intf sr_mod sd_mod cdrom t10_pi sg hv_storvsc scsi_transport_fc hv_netvsc serio_raw hyperv_keyboard hid_hyperv crct10dif_pclmul crc32_pclmul crc32c_intel hv_vmbus ghash_clmulni_intel dm_mirror dm_region_hash dm_log dm_mod\n[ 770.948863] CPU: 1 PID: 17197 Comm: systemd-sleep Not tainted 5.14.0-362.2.1.el9_3.x86_64 #1\n[ 770.948865] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022\n[ 770.948866] RIP: 0010:__flush_work.isra.0+0x212/0x230\n[ 770.948869] Code: 8b 4d 00 4c 8b 45 08 89 ca 48 c1 e9 04 83 e2 08 83 e1 0f 83 ca 02 89 c8 48 0f ba 6d 00 03 e9 25 ff ff ff 0f 0b e9 4e ff ff ff <0f> 0b 45 31 ed e9 44 ff ff ff e8 8f 89 b2 00 66 66 2e 0f 1f 84 00\n[ 770.948870] RSP: 0018:ffffaf4ac213fb10 EFLAGS: 00010246\n[ 770.948871] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8c992857\n[ 770.948872] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff9aad82b00330\n[ 770.948873] RBP: ffff9aad82b00330 R08: 0000000000000000 R09: ffff9aad87ee3d10\n[ 770.948874] R10: 0000000000000200 R11: 0000000000000000 R12: ffff9aad82b00330\n[ 770.948874] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001\n[ 770.948875] FS: 00007ff1b2f6bb40(0000) GS:ffff9aaf37d00000(0000) knlGS:0000000000000000\n[ 770.948878] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 770.948878] CR2: 0000555f345cb666 CR3: 00000001462dc005 CR4: 0000000000370ee0\n[ 770.948879] Call Trace:\n[ 770.948880] \n[ 770.948881] ? show_trace_log_lvl+0x1c4/0x2df\n[ 770.948884] ? show_trace_log_lvl+0x1c4/0x2df\n[ 770.948886] ? __cancel_work_timer+0x103/0x190\n[ 770.948887] ? __flush_work.isra.0+0x212/0x230\n[ 770.948889] ? __warn+0x81/0x110\n[ 770.948891] ? __flush_work.isra.0+0x212/0x230\n[ 770.948892] ? report_bug+0x10a/0x140\n[ 770.948895] ? handle_bug+0x3c/0x70\n[ 770.948898] ? exc_invalid_op+0x14/0x70\n[ 770.948899] ? asm_exc_invalid_op+0x16/0x20\n[ 770.948903] ? __flush_work.isra.0+0x212/0x230\n[ 770.948905] __cancel_work_timer+0x103/0x190\n[ 770.948907] ? _raw_spin_unlock_irqrestore+0xa/0x30\n[ 770.948910] drm_kms_helper_poll_disable+0x1e/0x40 [drm_kms_helper]\n[ 770.948923] drm_mode_config_helper_suspend+0x1c/0x80 [drm_kms_helper]\n[ 770.948933] ? __pfx_vmbus_suspend+0x10/0x10 [hv_vmbus]\n[ 770.948942] hyperv_vmbus_suspend+0x17/0x40 [hyperv_drm]\n[ 770.948944] ? __pfx_vmbus_suspend+0x10/0x10 [hv_vmbus]\n[ 770.948951] dpm_run_callback+0x4c/0x140\n[ 770.948954] __device_suspend_noir\n---truncated---", "affected": [ { "package": { "ecosystem": "Raspberry Pi OS:12", "name": "linux" }, "versions": [ "1:6.6.20-1+rpt1" ], "ecosystem_specific": { "binaries": [ { "binary_name": "linux-image-6.6.20+rpt-rpi-2712", "binary_version": "1:6.6.20-1+rpt1" }, { "binary_name": "linux-image-6.6.20+rpt-rpi-v6", "binary_version": "1:6.6.20-1+rpt1" }, { "binary_name": "linux-image-6.6.20+rpt-rpi-v7", "binary_version": "1:6.6.20-1+rpt1" }, { "binary_name": "linux-image-6.6.20+rpt-rpi-v7l", "binary_version": "1:6.6.20-1+rpt1" }, { "binary_name": "linux-image-6.6.20+rpt-rpi-v8", "binary_version": "1:6.6.20-1+rpt1" } ] }, "database_specific": { "per_version": { "1:6.6.20-1+rpt1": { "linux_commit": "6f16847710cc0502450788b9f12f0a14d3429668", "upstream_version": "6.6.20", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.27" } } } } ], "references": [ { "type": "ADVISORY", "url": "https://www.cve.org/CVERecord?id=CVE-2024-35927" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/3d1b47e3a935abd4f258a945db87e7267ff4079c" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/18451798f4a4e7418b9fad7e7dd313fe84b1f545" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/5abffb66d12bcac84bf7b66389c571b8bb6e82bd" } ], "database_specific": { "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git", "upstream_modified": "2026-05-12T04:54:46Z" } }