{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-22T21:20:35.126","vulnerabilities":[{"cve":{"id":"CVE-2024-50073","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-10-29T01:15:04.463","lastModified":"2025-11-03T23:16:47.140","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: Fix use-after-free in gsm_cleanup_mux\n\nBUG: KASAN: slab-use-after-free in gsm_cleanup_mux+0x77b/0x7b0\ndrivers/tty/n_gsm.c:3160 [n_gsm]\nRead of size 8 at addr ffff88815fe99c00 by task poc/3379\nCPU: 0 UID: 0 PID: 3379 Comm: poc Not tainted 6.11.0+ #56\nHardware name: VMware, Inc. VMware Virtual Platform/440BX\nDesktop Reference Platform, BIOS 6.00 11/12/2020\nCall Trace:\n <TASK>\n gsm_cleanup_mux+0x77b/0x7b0 drivers/tty/n_gsm.c:3160 [n_gsm]\n __pfx_gsm_cleanup_mux+0x10/0x10 drivers/tty/n_gsm.c:3124 [n_gsm]\n __pfx_sched_clock_cpu+0x10/0x10 kernel/sched/clock.c:389\n update_load_avg+0x1c1/0x27b0 kernel/sched/fair.c:4500\n __pfx_min_vruntime_cb_rotate+0x10/0x10 kernel/sched/fair.c:846\n __rb_insert_augmented+0x492/0xbf0 lib/rbtree.c:161\n gsmld_ioctl+0x395/0x1450 drivers/tty/n_gsm.c:3408 [n_gsm]\n _raw_spin_lock_irqsave+0x92/0xf0 arch/x86/include/asm/atomic.h:107\n __pfx_gsmld_ioctl+0x10/0x10 drivers/tty/n_gsm.c:3822 [n_gsm]\n ktime_get+0x5e/0x140 kernel/time/timekeeping.c:195\n ldsem_down_read+0x94/0x4e0 arch/x86/include/asm/atomic64_64.h:79\n __pfx_ldsem_down_read+0x10/0x10 drivers/tty/tty_ldsem.c:338\n __pfx_do_vfs_ioctl+0x10/0x10 fs/ioctl.c:805\n tty_ioctl+0x643/0x1100 drivers/tty/tty_io.c:2818\n\nAllocated by task 65:\n gsm_data_alloc.constprop.0+0x27/0x190 drivers/tty/n_gsm.c:926 [n_gsm]\n gsm_send+0x2c/0x580 drivers/tty/n_gsm.c:819 [n_gsm]\n gsm1_receive+0x547/0xad0 drivers/tty/n_gsm.c:3038 [n_gsm]\n gsmld_receive_buf+0x176/0x280 drivers/tty/n_gsm.c:3609 [n_gsm]\n tty_ldisc_receive_buf+0x101/0x1e0 drivers/tty/tty_buffer.c:391\n tty_port_default_receive_buf+0x61/0xa0 drivers/tty/tty_port.c:39\n flush_to_ldisc+0x1b0/0x750 drivers/tty/tty_buffer.c:445\n process_scheduled_works+0x2b0/0x10d0 kernel/workqueue.c:3229\n worker_thread+0x3dc/0x950 kernel/workqueue.c:3391\n kthread+0x2a3/0x370 kernel/kthread.c:389\n ret_from_fork+0x2d/0x70 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:257\n\nFreed by task 3367:\n kfree+0x126/0x420 mm/slub.c:4580\n gsm_cleanup_mux+0x36c/0x7b0 drivers/tty/n_gsm.c:3160 [n_gsm]\n gsmld_ioctl+0x395/0x1450 drivers/tty/n_gsm.c:3408 [n_gsm]\n tty_ioctl+0x643/0x1100 drivers/tty/tty_io.c:2818\n\n[Analysis]\ngsm_msg on the tx_ctrl_list or tx_data_list of gsm_mux\ncan be freed by multi threads through ioctl,which leads\nto the occurrence of uaf. Protect it by gsm tx lock."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tty: n_gsm: Fix use-after-free en gsm_cleanup_mux ERROR: KASAN: slab-use-after-free en gsm_cleanup_mux+0x77b/0x7b0 drivers/tty/n_gsm.c:3160 [n_gsm] Lectura de tamaño 8 en la dirección ffff88815fe99c00 por la tarea poc/3379 CPU: 0 UID: 0 PID: 3379 Comm: poc No contaminado 6.11.0+ #56 Nombre del hardware: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 12/11/2020 Seguimiento de llamadas:  gsm_cleanup_mux+0x77b/0x7b0 controladores/tty/n_gsm.c:3160 [n_gsm] __pfx_gsm_cleanup_mux+0x10/0x10 controladores/tty/n_gsm.c:3124 [n_gsm] __pfx_sched_clock_cpu+0x10/0x10 kernel/sched/clock.c:389 update_load_avg+0x1c1/0x27b0 kernel/sched/fair.c:4500 __pfx_min_vruntime_cb_rotate+0x10/0x10 kernel/sched/fair.c:846 __rb_insert_augmented+0x492/0xbf0 lib/rbtree.c:161 gsmld_ioctl+0x395/0x1450 controladores/tty/n_gsm.c:3408 [n_gsm] _raw_spin_lock_irqsave+0x92/0xf0 arquitectura/x86/include/asm/atomic.h:107 __pfx_gsmld_ioctl+0x10/0x10 controladores/tty/n_gsm.c:3822 [n_gsm] ktime_get+0x5e/0x140 núcleo/tiempo/tiempo de mantenimiento.c:195 ldsem_down_read+0x94/0x4e0 arquitectura/x86/include/asm/atomic64_64.h:79 __pfx_ldsem_down_read+0x10/0x10 controladores/tty/tty_ldsem.c:338 __pfx_do_vfs_ioctl+0x10/0x10 fs/ioctl.c:805 tty_ioctl+0x643/0x1100 drivers/tty/tty_io.c:2818 Asignado por la tarea 65: gsm_data_alloc.constprop.0+0x27/0x190 drivers/tty/n_gsm.c:926 [n_gsm] gsm_send+0x2c/0x580 drivers/tty/n_gsm.c:819 [n_gsm] gsm1_receive+0x547/0xad0 drivers/tty/n_gsm.c:3038 [n_gsm] gsmld_receive_buf+0x176/0x280 drivers/tty/n_gsm.c:3609 [n_gsm] tty_ldisc_receive_buf+0x101/0x1e0 controladores/tty/tty_buffer.c:391 puerto_tty_default_receive_buf+0x61/0xa0 controladores/tty/tty_port.c:39 vaciado_a_ldisc+0x1b0/0x750 controladores/tty/tty_buffer.c:445 proceso_trabajos_programados+0x2b0/0x10d0 kernel/workqueue.c:3229 subproceso_trabajador+0x3dc/0x950 kernel/workqueue.c:3391 kthread+0x2a3/0x370 kernel/kthread.c:389 ret_de_la_bifurcación+0x2d/0x70 arch/x86/kernel/process.c:147 ret_de_la_bifurcación_asm+0x1a/0x30 arch/x86/entry/entry_64.S:257 Liberado por la tarea 3367: kfree+0x126/0x420 mm/slub.c:4580 gsm_cleanup_mux+0x36c/0x7b0 drivers/tty/n_gsm.c:3160 [n_gsm] gsmld_ioctl+0x395/0x1450 drivers/tty/n_gsm.c:3408 [n_gsm] tty_ioctl+0x643/0x1100 drivers/tty/tty_io.c:2818 [Análisis] gsm_msg en tx_ctrl_list o tx_data_list de gsm_mux puede ser liberado por múltiples subprocesos a través de ioctl, lo que lleva a la aparición de uaf. Protéjalo con cerradura gsm tx."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"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","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"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","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-416"}]},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-416"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.114","matchCriteriaId":"CCCFB10D-CB4C-4D7A-BACF-D4AE755765D9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.58","matchCriteriaId":"6B9489BC-825E-4EEE-8D93-F93C801988C8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.11.5","matchCriteriaId":"6E62D61A-F704-44DB-A311-17B7534DA7BC"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*","matchCriteriaId":"7F361E1D-580F-4A2D-A509-7615F73167A1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*","matchCriteriaId":"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*","matchCriteriaId":"3C95E234-D335-4B6C-96BF-E2CEBD8654ED"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0eec592c6a7460ba795d7de29f3dc95cb5422e62","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/9462f4ca56e7d2430fdb6dcc8498244acbfc4489","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/bf171b5e86e41de4c1cf32fb7aefa275c3d7de49","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/c29f192e0d44cc1cbaf698fa1ff198f63556691a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","source":"af854a3a-2127-422b-91ae-364da2661108"}]}}]}