CVE-2024-40911

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Lock wiphy in cfg80211_get_station Wiphy should be locked before calling rdev_get_station() (see lockdep assert in ieee80211_get_station()). This fixes the following kernel NULL dereference: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000050 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=0000000003001000 [0000000000000050] pgd=0800000002dca003, p4d=0800000002dca003, pud=08000000028e9003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] SMP Modules linked in: netconsole dwc3_meson_g12a dwc3_of_simple dwc3 ip_gre gre ath10k_pci ath10k_core ath9k ath9k_common ath9k_hw ath CPU: 0 PID: 1091 Comm: kworker/u8:0 Not tainted 6.4.0-02144-g565f9a3a7911-dirty #705 Hardware name: RPT (r1) (DT) Workqueue: bat_events batadv_v_elp_throughput_metric_update pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ath10k_sta_statistics+0x10/0x2dc [ath10k_core] lr : sta_set_sinfo+0xcc/0xbd4 sp : ffff000007b43ad0 x29: ffff000007b43ad0 x28: ffff0000071fa900 x27: ffff00000294ca98 x26: ffff000006830880 x25: ffff000006830880 x24: ffff00000294c000 x23: 0000000000000001 x22: ffff000007b43c90 x21: ffff800008898acc x20: ffff00000294c6e8 x19: ffff000007b43c90 x18: 0000000000000000 x17: 445946354d552d78 x16: 62661f7200000000 x15: 57464f445946354d x14: 0000000000000000 x13: 00000000000000e3 x12: d5f0acbcebea978e x11: 00000000000000e3 x10: 000000010048fe41 x9 : 0000000000000000 x8 : ffff000007b43d90 x7 : 000000007a1e2125 x6 : 0000000000000000 x5 : ffff0000024e0900 x4 : ffff800000a0250c x3 : ffff000007b43c90 x2 : ffff00000294ca98 x1 : ffff000006831920 x0 : 0000000000000000 Call trace: ath10k_sta_statistics+0x10/0x2dc [ath10k_core] sta_set_sinfo+0xcc/0xbd4 ieee80211_get_station+0x2c/0x44 cfg80211_get_station+0x80/0x154 batadv_v_elp_get_throughput+0x138/0x1fc batadv_v_elp_throughput_metric_update+0x1c/0xa4 process_one_work+0x1ec/0x414 worker_thread+0x70/0x46c kthread+0xdc/0xe0 ret_from_fork+0x10/0x20 Code: a9bb7bfd 910003fd a90153f3 f9411c40 (f9402814) This happens because STA has time to disconnect and reconnect before batadv_v_elp_throughput_metric_update() delayed work gets scheduled. In this situation, ath10k_sta_state() can be in the middle of resetting arsta data when the work queue get chance to be scheduled and ends up accessing it. Locking wiphy prevents that.
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*

History

29 Aug 2024, 13:43

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: cfg80211: bloquear wiphy en cfg80211_get_station Wiphy debe estar bloqueado antes de llamar a rdev_get_station() (ver lockdep afirmar en ieee80211_get_station()). Esto corrige la siguiente desreferencia NULL del kernel: No se puede manejar la desreferencia del puntero NULL del kernel en la dirección virtual 0000000000000050 Información de cancelación de memoria: ESR = 0x0000000096000006 EC = 0x25: DABT (EL actual), IL = 32 bits SET = 0, FnV = 0 EA = 0 , S1PTW = 0 FSC = 0x06: error de traducción de nivel 2 Información de cancelación de datos: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 tabla de páginas de usuario: 4k páginas, VA de 48 bits, pgdp=0000000003001000 [0000000000000050] 00000002dca003 , p4d=0800000002dca003, pud=08000000028e9003, pmd=0000000000000000 Error interno: Ups: 0000000096000006 [#1] Módulos SMP vinculados en: netconsole dwc3_meson_g12a dwc3_of_simple dwc 3 ip_gre gre ath10k_pci ath10k_core ath9k ath9k_common ath9k_hw ath CPU: 0 PID: 1091 Comunicaciones: kworker/u8 :0 No contaminado 6.4.0-02144-g565f9a3a7911-dirty #705 Nombre de hardware: RPT (r1) (DT) Cola de trabajo: bat_events batadv_v_elp_throughput_metric_update pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc: ath10k_sta_statistics+0x10/0x2dc [ath10k_core] lr: sta_set_sinfo+0xcc/0xbd4 sp: ffff000007b43ad0 x29: ffff000007b43ad0 x28: ffff0000071fa900 x27: ffff00000294ca98 6: ffff000006830880 x25: ffff000006830880 x24: ffff00000294c000 x23: 0000000000000001 x22: ffff000007b43c90 x21: ffff800008898acc x20: 0294c6e8 x19: ffff000007b43c90 x18: 0000000000000000 x17: 445946354d552d78 x16: 62661f7200000000 x15: 57464f445946354d x14: 000000000000000 0 x13: 00000000000000e3 x12: d5f0acbcebea978e x11: 00000000000000e3 x10: 000000010048fe41 x9: 0000000000000000 x8: ffff000007b43d90 x7: 00 0000007a1e2125 x6: 0000000000000000 x5: ffff0000024e0900 x4: ffff800000a0250c x3: ffff000007b43c90 x2: ffff00000294ca98 x1: ffff000006831920 x0: 0000000000000000 Rastreo de llamadas: ath10k_sta_statistics+0x10/0x2dc [ath10k_core] sta_set_sinfo+0xcc/0xbd4 0211_get_station+0x2c/0x44 cfg80211_get_station+0x80/0x154 batadv_v_elp_get_throughput+0x138/0x1fc batadv_v_elp_throughput_metric_update+0x1c/0xa4 Process_one_work+0x1ec/ 0x414 work_thread+0x70/0x46c kthread+0xdc/0xe0 ret_from_fork+0x10/0x20 Código: a9bb7bfd 910003fd a90153f3 f9411c40 (f9402814) Esto sucede porque STA tiene tiempo para desconectarse y volver a conectarse antes de batadv_v_elp_throughput_metric_up date() se programa el trabajo retrasado. En esta situación, ath10k_sta_state() puede estar en medio de restablecer los datos de arsta cuando la cola de trabajo tiene la oportunidad de programarse y termina accediendo a ella. Bloquear Wiphy evita eso.
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
CWE CWE-476
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/0ccc63958d8373e15a69f4f8069f3e78f7f3898a - () https://git.kernel.org/stable/c/0ccc63958d8373e15a69f4f8069f3e78f7f3898a - Patch
References () https://git.kernel.org/stable/c/43e1eefb0b2094e2281150d87d09e8bc872b9fba - () https://git.kernel.org/stable/c/43e1eefb0b2094e2281150d87d09e8bc872b9fba - Patch
References () https://git.kernel.org/stable/c/642f89daa34567d02f312d03e41523a894906dae - () https://git.kernel.org/stable/c/642f89daa34567d02f312d03e41523a894906dae - Patch
References () https://git.kernel.org/stable/c/6d540b0317901535275020bd4ac44fac6439ca76 - () https://git.kernel.org/stable/c/6d540b0317901535275020bd4ac44fac6439ca76 - Patch
References () https://git.kernel.org/stable/c/dfd84ce41663be9ca3f69bd657c45f49b69344d9 - () https://git.kernel.org/stable/c/dfd84ce41663be9ca3f69bd657c45f49b69344d9 - Patch

12 Jul 2024, 13:15

Type Values Removed Values Added
New CVE

Information

Published : 2024-07-12 13:15

Updated : 2024-08-29 13:43


NVD link : CVE-2024-40911

Mitre link : CVE-2024-40911

CVE.ORG link : CVE-2024-40911


JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference