{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-54308", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:06:44.530Z", "datePublished": "2025-12-30T12:23:41.163Z", "dateUpdated": "2026-08-05T09:19:08.567Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:19:08.567Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ymfpci: Create card with device-managed snd_devm_card_new()\n\nsnd_card_ymfpci_remove() was removed in commit c6e6bb5eab74 (\"ALSA:\nymfpci: Allocate resources with device-managed APIs\"), but the call to\nsnd_card_new() was not replaced with snd_devm_card_new().\n\nSince there was no longer a call to snd_card_free, unloading the module\nwould eventually result in Oops:\n\n[697561.532887] BUG: unable to handle page fault for address: ffffffffc0924480\n[697561.532893] #PF: supervisor read access in kernel mode\n[697561.532896] #PF: error_code(0x0000) - not-present page\n[697561.532899] PGD ae1e15067 P4D ae1e15067 PUD ae1e17067 PMD 11a8f5067 PTE 0\n[697561.532905] Oops: 0000 [#1] PREEMPT SMP NOPTI\n[697561.532909] CPU: 21 PID: 5080 Comm: wireplumber Tainted: G W OE 6.2.7 #1\n[697561.532914] Hardware name: System manufacturer System Product Name/TUF GAMING X570-PLUS, BIOS 4408 10/28/2022\n[697561.532916] RIP: 0010:try_module_get.part.0+0x1a/0xe0\n[697561.532924] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 41 55 41 54 49 89 fc bf 01 00 00 00 e8 56 3c f8 ff <41> 83 3c 24 02 0f 84 96 00 00 00 41 8b 84 24 30 03 00 00 85 c0 0f\n[697561.532927] RSP: 0018:ffffbe9b858c3bd8 EFLAGS: 00010246\n[697561.532930] RAX: ffff9815d14f1900 RBX: ffff9815c14e6000 RCX: 0000000000000000\n[697561.532933] RDX: 0000000000000000 RSI: ffffffffc055092c RDI: ffffffffb3778c1a\n[697561.532935] RBP: ffffbe9b858c3be8 R08: 0000000000000040 R09: ffff981a1a741380\n[697561.532937] R10: ffffbe9b858c3c80 R11: 00000009d56533a6 R12: ffffffffc0924480\n[697561.532939] R13: ffff9823439d8500 R14: 0000000000000025 R15: ffff9815cd109f80\n[697561.532942] FS: 00007f13084f1f80(0000) GS:ffff9824aef40000(0000) knlGS:0000000000000000\n[697561.532945] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[697561.532947] CR2: ffffffffc0924480 CR3: 0000000145344000 CR4: 0000000000350ee0\n[697561.532949] Call Trace:\n[697561.532951] \n[697561.532955] try_module_get+0x13/0x30\n[697561.532960] snd_ctl_open+0x61/0x1c0 [snd]\n[697561.532976] snd_open+0xb4/0x1e0 [snd]\n[697561.532989] chrdev_open+0xc7/0x240\n[697561.532995] ? fsnotify_perm.part.0+0x6e/0x160\n[697561.533000] ? __pfx_chrdev_open+0x10/0x10\n[697561.533005] do_dentry_open+0x169/0x440\n[697561.533009] vfs_open+0x2d/0x40\n[697561.533012] path_openat+0xa9d/0x10d0\n[697561.533017] ? debug_smp_processor_id+0x17/0x20\n[697561.533022] ? trigger_load_balance+0x65/0x370\n[697561.533026] do_filp_open+0xb2/0x160\n[697561.533032] ? _raw_spin_unlock+0x19/0x40\n[697561.533036] ? alloc_fd+0xa9/0x190\n[697561.533040] do_sys_openat2+0x9f/0x160\n[697561.533044] __x64_sys_openat+0x55/0x90\n[697561.533048] do_syscall_64+0x3b/0x90\n[697561.533052] entry_SYSCALL_64_after_hwframe+0x72/0xdc\n[697561.533056] RIP: 0033:0x7f1308a40db4\n[697561.533059] Code: 24 20 eb 8f 66 90 44 89 54 24 0c e8 46 68 f8 ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 32 44 89 c7 89 44 24 0c e8 78 68 f8 ff 8b 44\n[697561.533062] RSP: 002b:00007ffcce664450 EFLAGS: 00000293 ORIG_RAX: 0000000000000101\n[697561.533066] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1308a40db4\n[697561.533068] RDX: 0000000000080000 RSI: 00007ffcce664690 RDI: 00000000ffffff9c\n[697561.533070] RBP: 00007ffcce664690 R08: 0000000000000000 R09: 0000000000000012\n[697561.533072] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080000\n[697561.533074] R13: 00007f13054b069b R14: 0000565209f83200 R15: 0000000000000000\n[697561.533078] " } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable dereference is reached by opening the still-registered ALSA character devices (/dev/snd/controlC*, pcmC*) via the open()/ioctl syscall path, and the underlying stale state is created by local driver detach. No network or adjacent-network input is involved.\nAC:L - There is no race to win and no memory-layout precondition: once the driver detaches, the card, its minors and its dangling module/iomap/DMA pointers persist indefinitely, so a single open() deterministically hits the freed module struct. The reporter hit it accidentally with an ordinary userspace audio daemon.\nPR:L - The fatal use-after-free is performed by whoever opens /dev/snd/controlC0, which any unprivileged user in the audio group or holding the standard udev/logind ACL can do (pipewire/wireplumber do it automatically). Only the setup step (module unload/unbind) is administrative; no privilege is needed to perform the dereference itself.\nUI:N - Exploitation requires only the attacker's own open() syscall on the leftover device node; no victim action, file, or mount is needed. In the reported case the crash occurred with no interactive user involvement at all.\nS:U - The corruption and the crash are entirely within the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary. This is a standard in-kernel memory-safety defect.\nC:H - This is a use-after-free: try_module_get() reads the freed and potentially reallocated module structure, and the chip's still-enabled DSP keeps DMAing into pages already returned to the page allocator, exposing recycled kernel memory contents through the still-live PCM/control interfaces. Per UAF guidance this is High.\nI:H - try_module_get() performs atomic_inc_not_zero() into freed module memory, and, because snd_ymfpci_free() never runs, the hardware continues DMA-writing into DMA pages that devres already released back to the allocator — arbitrary corruption of reallocated kernel memory that is leverageable beyond a mere crash.\nA:H - The commit message documents a reproducible kernel Oops (page fault in try_module_get from snd_ctl_open) on any open of the leftover control device, and the orphaned shared IRQ plus ongoing DMA add further instability. Any kernel oops or panic is High." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "sound/pci/ymfpci/ymfpci.c" ], "versions": [ { "version": "c6e6bb5eab7457a938c0405d5ccf319d3ee735c1", "lessThan": "95642872c466030240199ba796a40771c493ed0c", "status": "affected", "versionType": "git" }, { "version": "c6e6bb5eab7457a938c0405d5ccf319d3ee735c1", "lessThan": "db7d7782677ff998c06997903d5400a0ba91cebb", "status": "affected", "versionType": "git" }, { "version": "c6e6bb5eab7457a938c0405d5ccf319d3ee735c1", "lessThan": "255a81a89501df77379b51a81c7a2e8e7c359bc6", "status": "affected", "versionType": "git" }, { "version": "c6e6bb5eab7457a938c0405d5ccf319d3ee735c1", "lessThan": "f33fc1576757741479452255132d6e3aaf558ffe", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "sound/pci/ymfpci/ymfpci.c" ], "versions": [ { "version": "5.15", "status": "affected" }, { "version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.106", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.23", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.10", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.15.106" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.1.23" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.2.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/95642872c466030240199ba796a40771c493ed0c" }, { "url": "https://git.kernel.org/stable/c/db7d7782677ff998c06997903d5400a0ba91cebb" }, { "url": "https://git.kernel.org/stable/c/255a81a89501df77379b51a81c7a2e8e7c359bc6" }, { "url": "https://git.kernel.org/stable/c/f33fc1576757741479452255132d6e3aaf558ffe" } ], "title": "ALSA: ymfpci: Create card with device-managed snd_devm_card_new()", "x_generator": { "engine": "bippy-1.2.0" } } } }