{"vulnerability": "CVE-2024-42251", "sightings": [{"uuid": "32f04da8-ecf8-40da-a519-66fc82c317a8", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2024-42251", "type": "seen", "source": "https://t.me/cvedetector/2765", "content": "{\n  \"Source\": \"CVE FEED\",\n  \"Title\": \"CVE-2024-42251 - QEMU Linux kernel folio reference count CreateLogFile exploit\", \n  \"Content\": \"CVE ID : CVE-2024-42251 \nPublished : Aug. 8, 2024, 9:15 a.m. | 34\u00a0minutes ago \nDescription : In the Linux kernel, the following vulnerability has been resolved:  \n  \nmm: page_ref: remove folio_try_get_rcu()  \n  \nThe below bug was reported on a non-SMP kernel:  \n  \n[  275.267158][ T4335] ------------[ cut here ]------------  \n[  275.267949][ T4335] kernel BUG at include/linux/page_ref.h:275!  \n[  275.268526][ T4335] invalid opcode: 0000 [#1] KASAN PTI  \n[  275.269001][ T4335] CPU: 0 PID: 4335 Comm: trinity-c3 Not tainted 6.7.0-rc4-00061-gefa7df3e3bb5 #1  \n[  275.269787][ T4335] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014  \n[  275.270679][ T4335] RIP: 0010:try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))  \n[  275.272813][ T4335] RSP: 0018:ffffc90005dcf650 EFLAGS: 00010202  \n[  275.273346][ T4335] RAX: 0000000000000246 RBX: ffffea00066e0000 RCX: 0000000000000000  \n[  275.274032][ T4335] RDX: fffff94000cdc007 RSI: 0000000000000004 RDI: ffffea00066e0034  \n[  275.274719][ T4335] RBP: ffffea00066e0000 R08: 0000000000000000 R09: fffff94000cdc006  \n[  275.275404][ T4335] R10: ffffea00066e0037 R11: 0000000000000000 R12: 0000000000000136  \n[  275.276106][ T4335] R13: ffffea00066e0034 R14: dffffc0000000000 R15: ffffea00066e0008  \n[  275.276790][ T4335] FS:  00007fa2f9b61740(0000) GS:ffffffff89d0d000(0000) knlGS:0000000000000000  \n[  275.277570][ T4335] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033  \n[  275.278143][ T4335] CR2: 00007fa2f6c00000 CR3: 0000000134b04000 CR4: 00000000000406f0  \n[  275.278833][ T4335] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000  \n[  275.279521][ T4335] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400  \n[  275.280201][ T4335] Call Trace:  \n[  275.280499][ T4335]    \n[ 275.280751][ T4335] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447)  \n[ 275.281087][ T4335] ? do_trap (arch/x86/kernel/traps.c:112 arch/x86/kernel/traps.c:153)  \n[ 275.281463][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))  \n[ 275.281884][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))  \n[ 275.282300][ T4335] ? do_error_trap (arch/x86/kernel/traps.c:174)  \n[ 275.282711][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))  \n[ 275.283129][ T4335] ? handle_invalid_op (arch/x86/kernel/traps.c:212)  \n[ 275.283561][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))  \n[ 275.283990][ T4335] ? exc_invalid_op (arch/x86/kernel/traps.c:264)  \n[ 275.284415][ T4335] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:568)  \n[ 275.284859][ T4335] ? try_get_folio (include/linux/page_ref.h:275 (discriminator 3) mm/gup.c:79 (discriminator 3))  \n[ 275.285278][ T4335] try_grab_folio (mm/gup.c:148)  \n[ 275.285684][ T4335] __get_user_pages (mm/gup.c:1297 (discriminator 1))  \n[ 275.286111][ T4335] ? __pfx___get_user_pages (mm/gup.c:1188)  \n[ 275.286579][ T4335] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825)  \n[ 275.287034][ T4335] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 1))  \n[ 275.287416][ T4335] __gup_longterm_locked (mm/gup.c:1509 mm/gup.c:2209)  \n[ 275.288192][ T4335] ? __pfx___gup_longterm_locked (mm/gup.c:2204)  \n[ 275.288697][ T4335] ? __pfx_lock_acquire (kernel/locking/lockdep.c:5722)  \n[ 275.289135][ T4335] ? __pfx___might_resched (kernel/sched/core.c:10106)  \n[ 275.289595][ T4335] pin_user_pages_remote (mm/gup.c:3350)  \n[ 275.290041][ T4335] ? __pfx_pin_user_pages_remote (mm/gup.c:3350)  \n[ 275.290545][ T4335] ? find_held_lock (kernel/locking/lockdep.c:5244 (discriminator 1))  \n[ 275.290961][ T4335] ? mm_access (kernel/fork.c:1573)  \n[ 275.291353][ T4[...]", "creation_timestamp": "2024-08-08T12:12:52.000000Z"}]}