{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2022-48919", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-48919", "idYear": 2022, "status": "PUBLISHED", "publishedAt": "2024-08-22T01:32:43.390Z", "updatedAt": "2026-08-05T08:52:54.791Z", "importedAt": "2026-10-24T01:56:45.230Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "cifs: fix double free race when mount fails in cifs_get_root()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix double free race when mount fails in cifs_get_root()\n\nWhen cifs_get_root() fails during cifs_smb3_do_mount() we call\ndeactivate_locked_super() which eventually will call delayed_free() which\nwill free the context.\nIn this situation we should not proceed to enter the out: section in\ncifs_smb3_do_mount() and free the same resources a second time.\n\n[Thu Feb 10 12:59:06 2022] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022] Read of size 8 at addr ffff888364f4d110 by task swapper/1/0\n\n[Thu Feb 10 12:59:06 2022] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G OE 5.17.0-rc3+ #4\n[Thu Feb 10 12:59:06 2022] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.0 12/17/2019\n[Thu Feb 10 12:59:06 2022] Call Trace:\n[Thu Feb 10 12:59:06 2022] \n[Thu Feb 10 12:59:06 2022] dump_stack_lvl+0x5d/0x78\n[Thu Feb 10 12:59:06 2022] print_address_description.constprop.0+0x24/0x150\n[Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022] kasan_report.cold+0x7d/0x117\n[Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022] __asan_load8+0x86/0xa0\n[Thu Feb 10 12:59:06 2022] rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022] rcu_core+0x547/0xca0\n[Thu Feb 10 12:59:06 2022] ? call_rcu+0x3c0/0x3c0\n[Thu Feb 10 12:59:06 2022] ? __this_cpu_preempt_check+0x13/0x20\n[Thu Feb 10 12:59:06 2022] ? lock_is_held_type+0xea/0x140\n[Thu Feb 10 12:59:06 2022] rcu_core_si+0xe/0x10\n[Thu Feb 10 12:59:06 2022] __do_softirq+0x1d4/0x67b\n[Thu Feb 10 12:59:06 2022] __irq_exit_rcu+0x100/0x150\n[Thu Feb 10 12:59:06 2022] irq_exit_rcu+0xe/0x30\n[Thu Feb 10 12:59:06 2022] sysvec_hyperv_stimer0+0x9d/0xc0\n...\n[Thu Feb 10 12:59:07 2022] Freed by task 58179:\n[Thu Feb 10 12:59:07 2022] kasan_save_stack+0x26/0x50\n[Thu Feb 10 12:59:07 2022] kasan_set_track+0x25/0x30\n[Thu Feb 10 12:59:07 2022] kasan_set_free_info+0x24/0x40\n[Thu Feb 10 12:59:07 2022] ____kasan_slab_free+0x137/0x170\n[Thu Feb 10 12:59:07 2022] __kasan_slab_free+0x12/0x20\n[Thu Feb 10 12:59:07 2022] slab_free_freelist_hook+0xb3/0x1d0\n[Thu Feb 10 12:59:07 2022] kfree+0xcd/0x520\n[Thu Feb 10 12:59:07 2022] cifs_smb3_do_mount+0x149/0xbe0 [cifs]\n[Thu Feb 10 12:59:07 2022] smb3_get_tree+0x1a0/0x2e0 [cifs]\n[Thu Feb 10 12:59:07 2022] vfs_get_tree+0x52/0x140\n[Thu Feb 10 12:59:07 2022] path_mount+0x635/0x10c0\n[Thu Feb 10 12:59:07 2022] __x64_sys_mount+0x1bf/0x210\n[Thu Feb 10 12:59:07 2022] do_syscall_64+0x5c/0xc0\n[Thu Feb 10 12:59:07 2022] entry_SYSCALL_64_after_hwframe+0x44/0xae\n\n[Thu Feb 10 12:59:07 2022] Last potentially related work creation:\n[Thu Feb 10 12:59:07 2022] kasan_save_stack+0x26/0x50\n[Thu Feb 10 12:59:07 2022] __kasan_record_aux_stack+0xb6/0xc0\n[Thu Feb 10 12:59:07 2022] kasan_record_aux_stack_noalloc+0xb/0x10\n[Thu Feb 10 12:59:07 2022] call_rcu+0x76/0x3c0\n[Thu Feb 10 12:59:07 2022] cifs_umount+0xce/0xe0 [cifs]\n[Thu Feb 10 12:59:07 2022] cifs_kill_sb+0xc8/0xe0 [cifs]\n[Thu Feb 10 12:59:07 2022] deactivate_locked_super+0x5d/0xd0\n[Thu Feb 10 12:59:07 2022] cifs_smb3_do_mount+0xab9/0xbe0 [cifs]\n[Thu Feb 10 12:59:07 2022] smb3_get_tree+0x1a0/0x2e0 [cifs]\n[Thu Feb 10 12:59:07 2022] vfs_get_tree+0x52/0x140\n[Thu Feb 10 12:59:07 2022] path_mount+0x635/0x10c0\n[Thu Feb 10 12:59:07 2022] __x64_sys_mount+0x1bf/0x210\n[Thu Feb 10 12:59:07 2022] do_syscall_64+0x5c/0xc0\n[Thu Feb 10 12:59:07 2022] entry_SYSCALL_64_after_hwframe+0x44/0xae", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "d17abdf7566566fc402c31899b353044a7ff3cf4", "status": "affected", "versionType": "git", "lessThan": "546d60859ecf13380fcabcbeace53a5971493a2b" }, { "version": "d17abdf7566566fc402c31899b353044a7ff3cf4", "status": "affected", "versionType": "git", "lessThan": "563431c1f3c8f2230e4a9c445fa23758742bc4f0" }, { "version": "d17abdf7566566fc402c31899b353044a7ff3cf4", "status": "affected", "versionType": "git", "lessThan": "3d6cc9898efdfb062efb74dc18cfc700e082f5d5" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.11", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.11" }, { "version": "5.15.27", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "5.16.13", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.16.*" }, { "version": "5.17", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }