CVSS: 5.5EPSS: 0%CPEs: 9EXPL: 0CVE-2024-26878 – quota: Fix potential NULL pointer dereference
https://notcve.org/view.php?id=CVE-2024-26878
In the Linux kernel, the following vulnerability has been resolved: quota: Fix potential NULL pointer dereference Below race may cause NULL pointer dereference P1 P2 dquot_free_inode quota_off drop_dquot_ref remove_dquot_ref dquots = i_dquot(inode) dquots = i_dquot(inode) srcu_read_lock dquots[cnt]) != NULL (1) dquots[type] = NULL (2) spin_lock(&dquots[cnt]->dq_dqb_lock) (3) .... If dquot_free_inode(or other routines) checks inode's quota pointers (1) before quota_off sets it to NULL(2) and use it (3) after that, NULL pointer dereference will be triggered. So let's fix it by using a temporary pointer to avoid this issue. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cuota: corrige una posible desreferencia del puntero NULL La siguiente carrera puede causar una desreferencia del puntero NULL P1 P2 dquot_free_inode quote_off drop_dquot_ref remove_dquot_ref dquots = i_dquot(inode) dquots = i_dquot(inode) srcu_read_lock dquots[cnt]) != NULL (1) dquots[tipo] = NULL (2) spin_lock(&dquots[cnt]->dq_dqb_lock) (3) .... Si dquot_free_inode(u otras rutinas) verifica los punteros de cuota del inodo (1) antes de que cuota_off lo establezca a NULL(2) y usarlo (3) después de eso, se activará la desreferencia del puntero NULL. • https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1 https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0 https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0 https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25 https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754 https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5 https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7 https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583 • CWE-476: NULL Pointer Dereference •
CVSS: 6.4EPSS: 0%CPEs: 9EXPL: 0CVE-2024-26875 – media: pvrusb2: fix uaf in pvr2_context_set_notify
https://notcve.org/view.php?id=CVE-2024-26875
In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix uaf in pvr2_context_set_notify [Syzbot reported] BUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26 CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline] pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272 Freed by task 906: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x105/0x340 mm/slub.c:4409 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline] pvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158 [Analyze] Task A set disconnect_flag = !0, which resulted in Task B's condition being met and releasing mp, leading to this issue. [Fix] Place the disconnect_flag assignment operation after all code in pvr2_context_disconnect() to avoid this issue. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: media: pvrusb2: corrige uaf en pvr2_context_set_notify [Syzbot informó] ERROR: KASAN: slab-use-after-free en pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2 -context.c:35 Lectura del tamaño 4 en la dirección ffff888113aeb0d8 por tarea kworker/1:1/26 CPU: 1 PID: 26 Comm: kworker/1:1 No contaminado 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 25/01/2024 Cola de trabajo: usb_hub_wq hub_event Seguimiento de llamadas: __dump_stack lib/dump_stack.c:88 [en línea] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c :106 print_address_description mm/kasan/report.c:377 [en línea] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 pvr2_context_set_notify+0x2c4/0x310 controladores/ media/usb/pvrusb2/pvrusb2-context.c:35 pvr2_context_notify controladores/media/usb/pvrusb2/pvrusb2-context.c:95 [en línea] pvr2_context_disconnect+0x94/0xb0 controladores/media/usb/pvrusb2/pvrusb2-context.c :272 Liberado por la tarea 906: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 veneno_slab_object mm/kasan/common.c:241 [en línea] __kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [en línea] slab_free_hook mm/slub.c:2121 [en línea] slab_free mm/slub.c:4299 [en línea] kfree+0x105/0x340 mm/slub.c:4409 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [en línea] pvr2_context_thread_func+0x69d/0x960 controladores/medios /usb/pvrusb2/pvrusb2-context.c:158 [Analizar] La tarea A estableció desconectar_flag = !0, lo que resultó en que se cumpliera la condición de la tarea B y se liberara mp, lo que generó este problema. [Solución] Coloque la operación de asignaciónconnect_flag después de todo el código en pvr2_context_disconnect() para evitar este problema. • https://git.kernel.org/stable/c/e5be15c63804e05b5a94197524023702a259e308 https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7 https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475 https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592 https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5 • CWE-416: Use After Free •
CVSS: -EPSS: 0%CPEs: 9EXPL: 0CVE-2023-52644 – wifi: b43: Stop/wake correct queue in DMA Tx path when QoS is disabled
https://notcve.org/view.php?id=CVE-2023-52644
In the Linux kernel, the following vulnerability has been resolved: wifi: b43: Stop/wake correct queue in DMA Tx path when QoS is disabled When QoS is disabled, the queue priority value will not map to the correct ieee80211 queue since there is only one queue. Stop/wake queue 0 when QoS is disabled to prevent trying to stop/wake a non-existent queue and failing to stop/wake the actual queue instantiated. Log of issue before change (with kernel parameter qos=0): [ +5.112651] ------------[ cut here ]------------ [ +0.000005] WARNING: CPU: 7 PID: 25513 at net/mac80211/util.c:449 __ieee80211_wake_queue+0xd5/0x180 [mac80211] [ +0.000067] Modules linked in: b43(O) snd_seq_dummy snd_hrtimer snd_seq snd_seq_device nft_chain_nat xt_MASQUERADE nf_nat xfrm_user xfrm_algo xt_addrtype overlay ccm af_packet amdgpu snd_hda_codec_cirrus snd_hda_codec_generic ledtrig_audio drm_exec amdxcp gpu_sched xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_rpfilter ipt_rpfilter xt_pkttype xt_LOG nf_log_syslog xt_tcpudp nft_compat nf_tables nfnetlink sch_fq_codel btusb uinput iTCO_wdt ctr btrtl intel_pmc_bxt i915 intel_rapl_msr mei_hdcp mei_pxp joydev at24 watchdog btintel atkbd libps2 serio radeon btbcm vivaldi_fmap btmtk intel_rapl_common snd_hda_codec_hdmi bluetooth uvcvideo nls_iso8859_1 applesmc nls_cp437 x86_pkg_temp_thermal snd_hda_intel intel_powerclamp vfat videobuf2_vmalloc coretemp fat snd_intel_dspcfg crc32_pclmul uvc polyval_clmulni snd_intel_sdw_acpi loop videobuf2_memops snd_hda_codec tun drm_suballoc_helper polyval_generic drm_ttm_helper drm_buddy tap ecdh_generic videobuf2_v4l2 gf128mul macvlan ttm ghash_clmulni_intel ecc tg3 [ +0.000044] videodev bridge snd_hda_core rapl crc16 drm_display_helper cec mousedev snd_hwdep evdev intel_cstate bcm5974 hid_appleir videobuf2_common stp mac_hid libphy snd_pcm drm_kms_helper acpi_als mei_me intel_uncore llc mc snd_timer intel_gtt industrialio_triggered_buffer apple_mfi_fastcharge i2c_i801 mei snd lpc_ich agpgart ptp i2c_smbus thunderbolt apple_gmux i2c_algo_bit kfifo_buf video industrialio soundcore pps_core wmi tiny_power_button sbs sbshc button ac cordic bcma mac80211 cfg80211 ssb rfkill libarc4 kvm_intel kvm drm irqbypass fuse backlight firmware_class efi_pstore configfs efivarfs dmi_sysfs ip_tables x_tables autofs4 dm_crypt cbc encrypted_keys trusted asn1_encoder tee tpm rng_core input_leds hid_apple led_class hid_generic usbhid hid sd_mod t10_pi crc64_rocksoft crc64 crc_t10dif crct10dif_generic ahci libahci libata uhci_hcd ehci_pci ehci_hcd crct10dif_pclmul crct10dif_common sha512_ssse3 sha512_generic sha256_ssse3 sha1_ssse3 aesni_intel usbcore scsi_mod libaes crypto_simd cryptd scsi_common [ +0.000055] usb_common rtc_cmos btrfs blake2b_generic libcrc32c crc32c_generic crc32c_intel xor raid6_pq dm_snapshot dm_bufio dm_mod dax [last unloaded: b43(O)] [ +0.000009] CPU: 7 PID: 25513 Comm: irq/17-b43 Tainted: G W O 6.6.7 #1-NixOS [ +0.000003] Hardware name: Apple Inc. MacBookPro8,3/Mac-942459F5819B171B, BIOS 87.0.0.0.0 06/13/2019 [ +0.000001] RIP: 0010:__ieee80211_wake_queue+0xd5/0x180 [mac80211] [ +0.000046] Code: 00 45 85 e4 0f 85 9b 00 00 00 48 8d bd 40 09 00 00 f0 48 0f ba ad 48 09 00 00 00 72 0f 5b 5d 41 5c 41 5d 41 5e e9 cb 6d 3c d0 <0f> 0b 5b 5d 41 5c 41 5d 41 5e c3 cc cc cc cc 48 8d b4 16 94 00 00 [ +0.000002] RSP: 0018:ffffc90003c77d60 EFLAGS: 00010097 [ +0.000001] RAX: 0000000000000001 RBX: 0000000000000002 RCX: 0000000000000000 [ +0.000001] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88820b924900 [ +0.000002] RBP: ffff88820b924900 R08: ffffc90003c77d90 R09: 000000000003bfd0 [ +0.000001] R10: ffff88820b924900 R11: ffffc90003c77c68 R12: 0000000000000000 [ +0.000001] R13: 0000000000000000 R14: ffffc90003c77d90 R15: ffffffffc0fa6f40 [ +0.000001] FS: 0000000000000000(0000) GS:ffff88846fb80000(0000) knlGS:0000000000000000 [ +0.000001] CS: 0010 DS: 0 ---truncated--- En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: b43: Detener/activar la cola correcta en la ruta DMA Tx cuando QoS está deshabilitado Cuando QoS está deshabilitado, el valor de prioridad de la cola no se asignará a la cola ieee80211 correcta ya que solo hay una cola. Detener/activar la cola 0 cuando la QoS está deshabilitada para evitar intentar detener/activar una cola inexistente y no poder detener/activar la cola real instanciada. Registro del problema antes del cambio (con el parámetro del kernel qos=0): [+5.112651] ------------[ cortar aquí ]------------ [ +0.000005] ADVERTENCIA: CPU: 7 PID: 25513 en net/mac80211/util.c:449 __ieee80211_wake_queue+0xd5/0x180 [mac80211] [ +0.000067] Módulos vinculados en: b43(O) snd_seq_dummy snd_hrtimer snd_seq snd_seq_device nft _chain_nat xt_MASQUERADE nf_nat xfrm_user xfrm_algo xt_addrtype superposición ccm af_packet amdgpu snd_hda_codec_cirrus snd_hda_codec_generic ledtrig_audio drm_exec amdxcp gpu_sched xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_rpfilter ipt_rpfilter xt_pkttype xt_LOG nf_log_syslog xt _tcpudp nft_compat nf_tables nfnetlink sch_fq_codel btusb uinput iTCO_wdt ctr btrtl intel_pmc_bxt i915 intel_rapl_msr mei_hdcp mei_pxp joydev at24 watchdog btintel atkbd libps2 serio radeon btbcm vivaldi_fmap btmtk intel _rapl_common snd_hda_codec_hdmi bluetooth uvcvideo nls_iso8859_1 applesmc nls_cp437 x86_pkg_temp_thermal snd_hda_intel intel_powerclamp vfat videobuf2_vmalloc coretemp fat snd_intel_dspcfg crc32_pclmul uvc polyval_clmulni snd_intel_sdw_acpi loop videobuf2_memops snd_hda_codec tun drm_suballoc_helper polyval_generic drm_ttm_helper drm_ buddy tap ecdh_generic videobuf2_v4l2 gf128mul macvlan ttm ghash_clmulni_intel ecc tg3 [+0.000044] videodev bridge snd_hda_core rapl crc16 drm_display_helper cec mousedev snd_hwdep evdev intel_cstate bcm5974 hid_appleir videobuf2_common _hid libphy snd_pcm drm_kms_helper acpi_als mei_me intel_uncore llc mc snd_timer intel_gtt industrialio_triggered_buffer apple_mfi_fastcharge i2c_i801 mei snd lpc_ich agpgart ptp i2c_smbus thunderbolt apple_gmux i2c_algo_bit kfifo_buf video industrialio soundcore pps_core wmi tiny_power_button sbs sbshc botón ac cordic bcma mac80211 cfg80211 ssb rfkill libarc4 kvm_intel kvm drm irqbypass fusible retroiluminación firmware_class efi_pstore configfs efivarfs dmi_sysfs ip_tables x_tables autofs4 dm_crypt cbc encrypted_keys asn1_encoder tee tpm rng_core input_leds hid_apple led_class hid_generic usbhid hid sd_mod t10_pi crc64_rocksoft crc64 crc_t10dif crct10dif_generic ahci libahci libata uhci_hcd ehci_pci cd crct10dif_pclmul crct10dif_common sha512_ssse3 sha512_generic sha256_ssse3 sha1_ssse3 aesni_intel usbcore scsi_mod libaes crypto_simd cryptd scsi_common [ +0.000055] usb_common rtc_cmos btrfs blake2b_generic libcrc32c crc32c_generic crc32c_intel xor raid6_pq dm_snapshot dm_bufio dm_mod dax [última descarga: b43(O)] [ +0.000009] CPU: 7 PID: 25513 Comm: irq/17-b43 Contaminado: GWO 6.6.7 #1-NixOS [ +0.000 003] Hardware nombre: Apple Inc. • https://git.kernel.org/stable/c/e6f5b934fba8c44c87c551e066aa7ca6fde2939e https://git.kernel.org/stable/c/1824f942527f784a19e01eac2d9679a21623d010 https://git.kernel.org/stable/c/31aaf17200c336fe258b70d39c40645ae19d0240 https://git.kernel.org/stable/c/49f067726ab01c87cf57566797a8a719badbbf08 https://git.kernel.org/stable/c/04a2b6eff2ae1c19cb7f41e803bcbfaf94c06455 https://git.kernel.org/stable/c/c67698325c68f8768db858f5c87c34823421746d https://git.kernel.org/stable/c/bc845e2e42cae95172c04bf29807c480f51a2a83 https://git.kernel.org/stable/c/4049a9f80513a6739c5677736a4c88f96 •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-26851 – netfilter: nf_conntrack_h323: Add protection for bmp length out of range
https://notcve.org/view.php?id=CVE-2024-26851
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: Add protection for bmp length out of range UBSAN load reports an exception of BRK#5515 SHIFT_ISSUE:Bitwise shifts that are out of bounds for their data type. vmlinux get_bitmap(b=75) + 712 <net/netfilter/nf_conntrack_h323_asn1.c:0> vmlinux decode_seq(bs=0xFFFFFFD008037000, f=0xFFFFFFD008037018, level=134443100) + 1956 <net/netfilter/nf_conntrack_h323_asn1.c:592> vmlinux decode_choice(base=0xFFFFFFD0080370F0, level=23843636) + 1216 <net/netfilter/nf_conntrack_h323_asn1.c:814> vmlinux decode_seq(f=0xFFFFFFD0080371A8, level=134443500) + 812 <net/netfilter/nf_conntrack_h323_asn1.c:576> vmlinux decode_choice(base=0xFFFFFFD008037280, level=0) + 1216 <net/netfilter/nf_conntrack_h323_asn1.c:814> vmlinux DecodeRasMessage() + 304 <net/netfilter/nf_conntrack_h323_asn1.c:833> vmlinux ras_help() + 684 <net/netfilter/nf_conntrack_h323_main.c:1728> vmlinux nf_confirm() + 188 <net/netfilter/nf_conntrack_proto.c:137> Due to abnormal data in skb->data, the extension bitmap length exceeds 32 when decoding ras message then uses the length to make a shift operation. It will change into negative after several loop. UBSAN load could detect a negative shift as an undefined behaviour and reports exception. So we add the protection to avoid the length exceeding 32. Or else it will return out of range error and stop decoding. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: netfilter: nf_conntrack_h323: Agregar protección para longitud de bmp fuera de rango La carga de UBSAN informa una excepción de BRK#5515 SHIFT_ISSUE: desplazamientos bit a bit que están fuera de los límites para su tipo de datos. vmlinux get_bitmap(b=75) + 712 vmlinux decode_seq(bs=0xFFFFFFD008037000, f=0xFFFFFFD008037018, nivel=134443100) + 1956 vmlinux decode_choice (base=0xFFFFFFD0080370F0, nivel=23843636) + 1216 vmlinux decode_seq(f=0xFFFFFFD0080371A8, nivel=134443500) + 812 vmlinux decode_choice(base =0xFFFFFFD008037280, nivel=0) + 1216 vmlinux DecodeRasMessage() + 304 vmlinux ras_help() + 684 vmlinux nf_confirm() + 188 Debido a datos anormales en skb->data, la longitud del mapa de bits de la extensión excede 32 cuando se decodifica el mensaje ras y luego usa la longitud para realizar una operación de cambio . Cambiará a negativo después de varios bucles. • https://git.kernel.org/stable/c/5e35941d990123f155b02d5663e51a24f816b6f3 https://git.kernel.org/stable/c/98db42191329c679f4ca52bec0b319689e1ad8cb https://git.kernel.org/stable/c/4bafcc43baf7bcf93566394dbd15726b5b456b7a https://git.kernel.org/stable/c/ccd1108b16ab572d9bf635586b0925635dbd6bbc https://git.kernel.org/stable/c/b3c0f553820516ad4b62a9390ecd28d6f73a7b13 https://git.kernel.org/stable/c/39001e3c42000e7c2038717af0d33c32319ad591 https://git.kernel.org/stable/c/014a807f1cc9c9d5173c1cd935835553b00d211c https://git.kernel.org/stable/c/80ee5054435a11c87c9a4f30f1ff75008 • CWE-20: Improper Input Validation •
CVSS: 4.4EPSS: 0%CPEs: 6EXPL: 0CVE-2024-26846 – nvme-fc: do not wait in vain when unloading module
https://notcve.org/view.php?id=CVE-2024-26846
In the Linux kernel, the following vulnerability has been resolved: nvme-fc: do not wait in vain when unloading module The module exit path has race between deleting all controllers and freeing 'left over IDs'. To prevent double free a synchronization between nvme_delete_ctrl and ida_destroy has been added by the initial commit. There is some logic around trying to prevent from hanging forever in wait_for_completion, though it does not handling all cases. E.g. blktests is able to reproduce the situation where the module unload hangs forever. If we completely rely on the cleanup code executed from the nvme_delete_ctrl path, all IDs will be freed eventually. This makes calling ida_destroy unnecessary. We only have to ensure that all nvme_delete_ctrl code has been executed before we leave nvme_fc_exit_module. • https://git.kernel.org/stable/c/4f2c95015ec2a1899161be6c0bdaecedd5a7bfb2 https://git.kernel.org/stable/c/0bf567d6d9ffe09e059bbdfb4d07143cef42c75c https://git.kernel.org/stable/c/085195aa90a924c79e35569bcdad860d764a8e17 https://git.kernel.org/stable/c/baa6b7eb8c66486bd64608adc63fe03b30d3c0b9 https://git.kernel.org/stable/c/c0882c366418bf9c19e1ba7f270fe377a9bf5d67 https://git.kernel.org/stable/c/70fbfc47a392b98e5f8dba70c6efc6839205c982 https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html https://access.redhat.com/security/cve/CVE-2024 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-415: Double Free •