CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-26903 – Bluetooth: rfcomm: Fix null-ptr-deref in rfcomm_check_security
https://notcve.org/view.php?id=CVE-2024-26903
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: rfcomm: Fix null-ptr-deref in rfcomm_check_security During our fuzz testing of the connection and disconnection process at the RFCOMM layer, we discovered this bug. By comparing the packets from a normal connection and disconnection process with the testcase that triggered a KASAN report. We analyzed the cause of this bug as follows: 1. In the packets captured during a normal connection, the host sends a `Read Encryption Key Size` type of `HCI_CMD` packet (Command Opcode: 0x1408) to the controller to inquire the length of encryption key.After receiving this packet, the controller immediately replies with a Command Completepacket (Event Code: 0x0e) to return the Encryption Key Size. 2. In our fuzz test case, the timing of the controller's response to this packet was delayed to an unexpected point: after the RFCOMM and L2CAP layers had disconnected but before the HCI layer had disconnected. 3. • https://git.kernel.org/stable/c/369f419c097e82407dd429a202cde9a73d3ae29b https://git.kernel.org/stable/c/5f369efd9d963c1f711a06c9b8baf9f5ce616d85 https://git.kernel.org/stable/c/81d7d920a22fd58ef9aedb1bd0a68ee32bd23e96 https://git.kernel.org/stable/c/8d1753973f598531baaa2c1033cf7f7b5bb004b0 https://git.kernel.org/stable/c/567c0411dc3b424fc7bd1e6109726d7ba32d4f73 https://git.kernel.org/stable/c/3ead59bafad05f2967ae2438c0528d53244cfde5 https://git.kernel.org/stable/c/5f9fe302dd3a9bbc50f4888464c1773f45166bfd https://git.kernel.org/stable/c/2535b848fa0f42ddff3e5255cf5e742c9 • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2024-26902 – perf: RISCV: Fix panic on pmu overflow handler
https://notcve.org/view.php?id=CVE-2024-26902
In the Linux kernel, the following vulnerability has been resolved: perf: RISCV: Fix panic on pmu overflow handler (1 << idx) of int is not desired when setting bits in unsigned long overflowed_ctrs, use BIT() instead. This panic happens when running 'perf record -e branches' on sophgo sg2042. [ 273.311852] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000098 [ 273.320851] Oops [#1] [ 273.323179] Modules linked in: [ 273.326303] CPU: 0 PID: 1475 Comm: perf Not tainted 6.6.0-rc3+ #9 [ 273.332521] Hardware name: Sophgo Mango (DT) [ 273.336878] epc : riscv_pmu_ctr_get_width_mask+0x8/0x62 [ 273.342291] ra : pmu_sbi_ovf_handler+0x2e0/0x34e [ 273.347091] epc : ffffffff80aecd98 ra : ffffffff80aee056 sp : fffffff6e36928b0 [ 273.354454] gp : ffffffff821f82d0 tp : ffffffd90c353200 t0 : 0000002ade4f9978 [ 273.361815] t1 : 0000000000504d55 t2 : ffffffff8016cd8c s0 : fffffff6e3692a70 [ 273.369180] s1 : 0000000000000020 a0 : 0000000000000000 a1 : 00001a8e81800000 [ 273.376540] a2 : 0000003c00070198 a3 : 0000003c00db75a4 a4 : 0000000000000015 [ 273.383901] a5 : ffffffd7ff8804b0 a6 : 0000000000000015 a7 : 000000000000002a [ 273.391327] s2 : 000000000000ffff s3 : 0000000000000000 s4 : ffffffd7ff8803b0 [ 273.398773] s5 : 0000000000504d55 s6 : ffffffd905069800 s7 : ffffffff821fe210 [ 273.406139] s8 : 000000007fffffff s9 : ffffffd7ff8803b0 s10: ffffffd903f29098 [ 273.413660] s11: 0000000080000000 t3 : 0000000000000003 t4 : ffffffff8017a0ca [ 273.421022] t5 : ffffffff8023cfc2 t6 : ffffffd9040780e8 [ 273.426437] status: 0000000200000100 badaddr: 0000000000000098 cause: 000000000000000d [ 273.434512] [<ffffffff80aecd98>] riscv_pmu_ctr_get_width_mask+0x8/0x62 [ 273.441169] [<ffffffff80076bd8>] handle_percpu_devid_irq+0x98/0x1ee [ 273.447562] [<ffffffff80071158>] generic_handle_domain_irq+0x28/0x36 [ 273.454151] [<ffffffff8047a99a>] riscv_intc_irq+0x36/0x4e [ 273.459659] [<ffffffff80c944de>] handle_riscv_irq+0x4a/0x74 [ 273.465442] [<ffffffff80c94c48>] do_irq+0x62/0x92 [ 273.470360] Code: 0420 60a2 6402 5529 0141 8082 0013 0000 0013 0000 (6d5c) b783 [ 273.477921] ---[ end trace 0000000000000000 ]--- [ 273.482630] Kernel panic - not syncing: Fatal exception in interrupt En el kernel de Linux, se resolvió la siguiente vulnerabilidad: perf: RISCV: no se desea corregir el pánico en el controlador de desbordamiento de pmu (1 << idx) de int al configurar bits en overflowed_ctrs largos sin firmar; use BIT() en su lugar. Este pánico ocurre cuando se ejecuta 'perf record -e sucursales' en sophgo sg2042. [273.311852] No se puede manejar la desreferencia del puntero NULL del kernel en la dirección virtual 0000000000000098 [273.320851] Ups [#1] [273.323179] Módulos vinculados en: [273.326303] CPU: 0 PID: 1475 Comm: perf No contaminado 6.6.0- rc3+#9 [ 273.332521] Nombre de hardware: Sophgo Mango (DT) [ 273.336878] epc : riscv_pmu_ctr_get_width_mask+0x8/0x62 [ 273.342291] ra : pmu_sbi_ovf_handler+0x2e0/0x34e [ 273.347091] epc : ffff80aecd98 ra: ffffffff80aee056 sp: ffffff6e36928b0 [273.354454] gp: ffffffff821f82d0 tp : ffffffd90c353200 T0: 0000002ade4f9978 [273.361815] T1: 000000000000504D55 T2: FFFFFFFF8016CD8C S0: FFFFFFF66E3692A70 [273.369180] 1A8E81800000 [273.376540] A2: 0000003C00070198 A3: 0000003C00DB75A4 A4: 000000000000000015 [273.383901] A5: FFFFFFD7FF8804B0 A6: 0000000000000015 a7: 000000000000002a [273.391327] s2: 000000000000ffff s3: 0000000000000000 s4: ffffffd7ff8803b0 [273.398773] s5: 0000000000504d55 s6: ffffffd905069800 s7: ffffffff821fe210 [273.406139] s8: 000000007ffffff s9: ffffffd7ff8803b0 s10: ffffffd903f29098 [273.413660] s11: 00080000000 t3: 0000000000000003 t4: ffffffff8017a0ca [273.421022] t5: ffffffff8023cfc2 t6: ffffffd9040780e8 [273.426437] estado: 0000000200000100 badaddr: 0000000000000098 causa: 00000d [ 273.434512] [] riscv_pmu_ctr_get_width_mask+0x8/0x62 [ 273.441169] [] handle_percpu_devid_irq+0x98/0x1ee [ 273.447562 ] [] generic_handle_domain_irq+0x28/0x36 [ 273.454151] [] riscv_intc_irq+0x36/0x4e [ 273.459659] [] 0x4a/0x74 [ 273.465442] [] do_irq+0x62/0x92 [ 273.470360] Código: 0420 60a2 6402 5529 0141 8082 0013 0000 0013 0000 (6d5c) b783 [ 273.477921] ---[ final de seguimiento 0000000000000000 ]--- 273.482 630] Pánico del kernel: no se sincroniza: excepción fatal en la interrupción • https://git.kernel.org/stable/c/3ede8e94de6b834b48b0643385e66363e7a04be9 https://git.kernel.org/stable/c/9f599ba3b9cc4bdb8ec1e3f0feddd41bf9d296d6 https://git.kernel.org/stable/c/34b567868777e9fd39ec5333969728a7f0cf179c • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 9EXPL: 0CVE-2024-26901 – do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak
https://notcve.org/view.php?id=CVE-2024-26901
In the Linux kernel, the following vulnerability has been resolved: do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak syzbot identified a kernel information leak vulnerability in do_sys_name_to_handle() and issued the following report [1]. [1] "BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x100 lib/usercopy.c:40 instrument_copy_to_user include/linux/instrumented.h:114 [inline] _copy_to_user+0xbc/0x100 lib/usercopy.c:40 copy_to_user include/linux/uaccess.h:191 [inline] do_sys_name_to_handle fs/fhandle.c:73 [inline] __do_sys_name_to_handle_at fs/fhandle.c:112 [inline] __se_sys_name_to_handle_at+0x949/0xb10 fs/fhandle.c:94 __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94 ... Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] __kmem_cache_alloc_node+0x5c9/0x970 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc+0x121/0x3c0 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] do_sys_name_to_handle fs/fhandle.c:39 [inline] __do_sys_name_to_handle_at fs/fhandle.c:112 [inline] __se_sys_name_to_handle_at+0x441/0xb10 fs/fhandle.c:94 __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94 ... Bytes 18-19 of 20 are uninitialized Memory access of size 20 starts at ffff888128a46380 Data copied to user address 0000000020000240" Per Chuck Lever's suggestion, use kzalloc() instead of kmalloc() to solve the problem. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: do_sys_name_to_handle(): use kzalloc() para reparar kernel-infoleak syzbot identificó una vulnerabilidad de fuga de información del kernel en do_sys_name_to_handle() y emitió el siguiente informe [1]. [1] "ERROR: KMSAN: kernel-infoleak en instrument_copy_to_user include/linux/instrumented.h:114 [en línea] ERROR: KMSAN: kernel-infoleak en _copy_to_user+0xbc/0x100 lib/usercopy.c:40 instrument_copy_to_user include/linux/ instrumented.h:114 [en línea] _copy_to_user+0xbc/0x100 lib/usercopy.c:40 copy_to_user include/linux/uaccess.h:191 [en línea] do_sys_name_to_handle fs/fhandle.c:73 [en línea] __do_sys_name_to_handle_at fs/fhandle.c :112 [en línea] __se_sys_name_to_handle_at+0x949/0xb10 fs/fhandle.c:94 __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94 ... Uninit se creó en: slab_post_alloc_hook+0x129/0xa70 mm/slab.h: 768 losa_alloc_nodo mm/slub.c:3478 [en línea] __kmem_cache_alloc_node+0x5c9/0x970 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1006 [en línea] __kmalloc+0x121/0x3c0 mm/slab_common.c:1020 kmalloc include/linux/ slab.h:604 [en línea] do_sys_name_to_handle fs/fhandle.c:39 [en línea] __do_sys_name_to_handle_at fs/fhandle.c:112 [en línea] __se_sys_name_to_handle_at+0x441/0xb10 fs/fhandle.c:94 _handle_at+0xe4/0x140 fs/fhandle .c:94 ... Los bytes 18-19 de 20 no están inicializados El acceso a la memoria de tamaño 20 comienza en ffff888128a46380 Datos copiados a la dirección de usuario 0000000020000240" Según la sugerencia de Chuck Lever, use kzalloc() en lugar de kmalloc() para resolver el problema. • https://git.kernel.org/stable/c/990d6c2d7aee921e3bce22b2d6a750fd552262be https://git.kernel.org/stable/c/4bac28f441e3cc9d3f1a84c8d023228a68d8a7c1 https://git.kernel.org/stable/c/772a7def9868091da3bcb0d6c6ff9f0c03d7fa8b https://git.kernel.org/stable/c/cde76b3af247f615447bcfecf610bb76c3529126 https://git.kernel.org/stable/c/423b6bdf19bbc5e1f7e7461045099917378f7e71 https://git.kernel.org/stable/c/e6450d5e46a737a008b4885aa223486113bf0ad6 https://git.kernel.org/stable/c/c1362eae861db28b1608b9dc23e49634fe87b63b https://git.kernel.org/stable/c/cba138f1ef37ec6f961baeab62f312ded • CWE-402: Transmission of Private Resources into a New Sphere ('Resource Leak') CWE-908: Use of Uninitialized Resource •
CVSS: 7.8EPSS: 0%CPEs: 9EXPL: 0CVE-2024-26898 – aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts
https://notcve.org/view.php?id=CVE-2024-26898
In the Linux kernel, the following vulnerability has been resolved: aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts This patch is against CVE-2023-6270. The description of cve is: A flaw was found in the ATA over Ethernet (AoE) driver in the Linux kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on `struct net_device`, and a use-after-free can be triggered by racing between the free on the struct and the access through the `skbtxq` global queue. This could lead to a denial of service condition or potential code execution. In aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial code is finished. But the net_device ifp will still be used in later tx()->dev_queue_xmit() in kthread. • https://git.kernel.org/stable/c/7562f876cd93800f2f8c89445f2a563590b24e09 https://git.kernel.org/stable/c/ad80c34944d7175fa1f5c7a55066020002921a99 https://git.kernel.org/stable/c/1a54aa506b3b2f31496731039e49778f54eee881 https://git.kernel.org/stable/c/faf0b4c5e00bb680e8e43ac936df24d3f48c8e65 https://git.kernel.org/stable/c/7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4 https://git.kernel.org/stable/c/74ca3ef68d2f449bc848c0a814cefc487bf755fa https://git.kernel.org/stable/c/eb48680b0255a9e8a9bdc93d6a55b11c31262e62 https://git.kernel.org/stable/c/079cba4f4e307c69878226fdf5228c20a • CWE-416: Use After Free •
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 •