CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2024-27415 – netfilter: bridge: confirm multicast packets before passing them up the stack
https://notcve.org/view.php?id=CVE-2024-27415
In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: confirm multicast packets before passing them up the stack conntrack nf_confirm logic cannot handle cloned skbs referencing the same nf_conn entry, which will happen for multicast (broadcast) frames on bridges. Example: macvlan0 | br0 / \ ethX ethY ethX (or Y) receives a L2 multicast or broadcast packet containing an IP packet, flow is not yet in conntrack table. 1. skb passes through bridge and fake-ip (br_netfilter)Prerouting. -> skb->_nfct now references a unconfirmed entry 2. skb is broad/mcast packet. bridge now passes clones out on each bridge interface. 3. skb gets passed up the stack. 4. In macvlan case, macvlan driver retains clone(s) of the mcast skb and schedules a work queue to send them out on the lower devices. The clone skb->_nfct is not a copy, it is the same entry as the original skb. The macvlan rx handler then returns RX_HANDLER_PASS. 5. Normal conntrack hooks (in NF_INET_LOCAL_IN) confirm the orig skb. The Macvlan broadcast worker and normal confirm path will race. This race will not happen if step 2 already confirmed a clone. In that case later steps perform skb_clone() with skb->_nfct already confirmed (in hash table). • https://git.kernel.org/stable/c/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 https://git.kernel.org/stable/c/7c3f28599652acf431a2211168de4a583f30b6d5 https://git.kernel.org/stable/c/2b1414d5e94e477edff1d2c79030f1d742625ea0 https://git.kernel.org/stable/c/80cd0487f630b5382734997c3e5e3003a77db315 https://git.kernel.org/stable/c/cb734975b0ffa688ff6cc0eed463865bf07b6c01 https://git.kernel.org/stable/c/62e7151ae3eb465e0ab52a20c941ff33bb6332e9 https://access.redhat.com/security/cve/CVE-2024-27415 https://bugzilla.redhat.com/show_bug.cgi?id=2281101 •
CVSS: -EPSS: 0%CPEs: 9EXPL: 0CVE-2024-27413 – efi/capsule-loader: fix incorrect allocation size
https://notcve.org/view.php?id=CVE-2024-27413
In the Linux kernel, the following vulnerability has been resolved: efi/capsule-loader: fix incorrect allocation size gcc-14 notices that the allocation with sizeof(void) on 32-bit architectures is not enough for a 64-bit phys_addr_t: drivers/firmware/efi/capsule-loader.c: In function 'efi_capsule_open': drivers/firmware/efi/capsule-loader.c:295:24: error: allocation of insufficient size '4' for type 'phys_addr_t' {aka 'long long unsigned int'} with size '8' [-Werror=alloc-size] 295 | cap_info->phys = kzalloc(sizeof(void *), GFP_KERNEL); | ^ Use the correct type instead here. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: efi/capsule-loader: corrige el tamaño de asignación incorrecto gcc-14 advierte que la asignación con sizeof(void) en arquitecturas de 32 bits no es suficiente para phys_addr_t: drivers de 64 bits /firmware/efi/capsule-loader.c: En función 'efi_capsule_open': drivers/firmware/efi/capsule-loader.c:295:24: error: asignación de tamaño '4' insuficiente para el tipo 'phys_addr_t' {alias ' long long unsigned int'} con tamaño '8' [-Werror=alloc-size] 295 | cap_info->phys = kzalloc(sizeof(void *), GFP_KERNEL); | ^ Utilice el tipo correcto aquí. • https://git.kernel.org/stable/c/f24c4d478013d82bd1b943df566fff3561d52864 https://git.kernel.org/stable/c/95a362c9a6892085f714eb6e31eea6a0e3aa93bf https://git.kernel.org/stable/c/00cf21ac526011a29fc708f8912da446fac19f7b https://git.kernel.org/stable/c/950d4d74d311a18baed6878dbfba8180d7e5dddd https://git.kernel.org/stable/c/537e3f49dbe88881a6f0752beaa596942d9efd64 https://git.kernel.org/stable/c/4b73473c050a612fb4317831371073eda07c3050 https://git.kernel.org/stable/c/ddc547dd05a46720866c32022300f7376c40119f https://git.kernel.org/stable/c/11aabd7487857b8e7d768fefb092f66df •
CVSS: 5.5EPSS: 0%CPEs: 10EXPL: 0CVE-2024-27412 – power: supply: bq27xxx-i2c: Do not free non existing IRQ
https://notcve.org/view.php?id=CVE-2024-27412
In the Linux kernel, the following vulnerability has been resolved: power: supply: bq27xxx-i2c: Do not free non existing IRQ The bq27xxx i2c-client may not have an IRQ, in which case client->irq will be 0. bq27xxx_battery_i2c_probe() already has an if (client->irq) check wrapping the request_threaded_irq(). But bq27xxx_battery_i2c_remove() unconditionally calls free_irq(client->irq) leading to: [ 190.310742] ------------[ cut here ]------------ [ 190.310843] Trying to free already-free IRQ 0 [ 190.310861] WARNING: CPU: 2 PID: 1304 at kernel/irq/manage.c:1893 free_irq+0x1b8/0x310 Followed by a backtrace when unbinding the driver. Add an if (client->irq) to bq27xxx_battery_i2c_remove() mirroring probe() to fix this. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: alimentación: suministro: bq27xxx-i2c: no liberar IRQ no existente Es posible que el cliente bq27xxx i2c no tenga una IRQ, en cuyo caso client->irq será 0. bq27xxx_battery_i2c_probe( ) ya tiene una verificación if (cliente->irq) que envuelve request_threaded_irq(). Pero bq27xxx_battery_i2c_remove() llama incondicionalmente a free_irq(cliente->irq) lo que lleva a: [190.310742] ------------[ cortar aquí ]------------ [ 190.310843] Intentando liberar IRQ 0 [190.310861] que ya está libre ADVERTENCIA: CPU: 2 PID: 1304 en kernel/irq/manage.c:1893 free_irq+0x1b8/0x310 Seguido de un seguimiento al desvincular el controlador. Agregue un if (cliente->irq) a bq27xxx_battery_i2c_remove() mirroring probe() para solucionar este problema. • https://git.kernel.org/stable/c/76d2ed844def0cb8704d766924b07b2a918b3e30 https://git.kernel.org/stable/c/dafe9136be7b7fc30f1f3ca410c15b7cc65bee44 https://git.kernel.org/stable/c/1da9a4b55a6688e3a30c16d0cf2e7c6a90a684fb https://git.kernel.org/stable/c/e01820a94aea99296e500f54b3f36a2985061045 https://git.kernel.org/stable/c/e65fee45687fa2109e03056a696dc7d68a151296 https://git.kernel.org/stable/c/444ff00734f3878cd54ddd1ed5e2e6dbea9326d5 https://git.kernel.org/stable/c/ca4a2ddd2e69ca82ca5992d4c49649b2cbac3b74 https://git.kernel.org/stable/c/28960625adaaf3fa3d83c8d3596661d25 •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-27408 – dmaengine: dw-edma: eDMA: Add sync read before starting the DMA transfer in remote setup
https://notcve.org/view.php?id=CVE-2024-27408
In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-edma: eDMA: Add sync read before starting the DMA transfer in remote setup The Linked list element and pointer are not stored in the same memory as the eDMA controller register. If the doorbell register is toggled before the full write of the linked list a race condition error will occur. In remote setup we can only use a readl to the memory to assure the full write has occurred. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: dmaengine: dw-edma: eDMA: Añadida lectura sincronizada antes de iniciar la transferencia DMA en la configuración remota. El elemento de la lista vinculada y el puntero no se almacenan en la misma memoria que el registro del controlador eDMA. Si el registro del timbre se activa antes de la escritura completa de la lista vinculada, se producirá un error de condición de ejecución. • https://git.kernel.org/stable/c/7e4b8a4fbe2cecab0959e862604803d063f50029 https://git.kernel.org/stable/c/d24fe6d5a1cfdddb7a9ef56736ec501c4d0a5fd3 https://git.kernel.org/stable/c/f396b4df27cfe01a99f4b41f584c49e56477be3a https://git.kernel.org/stable/c/bbcc1c83f343e580c3aa1f2a8593343bf7b55bba •
CVSS: 7.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-27405 – usb: gadget: ncm: Avoid dropping datagrams of properly parsed NTBs
https://notcve.org/view.php?id=CVE-2024-27405
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ncm: Avoid dropping datagrams of properly parsed NTBs It is observed sometimes when tethering is used over NCM with Windows 11 as host, at some instances, the gadget_giveback has one byte appended at the end of a proper NTB. When the NTB is parsed, unwrap call looks for any leftover bytes in SKB provided by u_ether and if there are any pending bytes, it treats them as a separate NTB and parses it. But in case the second NTB (as per unwrap call) is faulty/corrupt, all the datagrams that were parsed properly in the first NTB and saved in rx_list are dropped. Adding a few custom traces showed the following: [002] d..1 7828.532866: dwc3_gadget_giveback: ep1out: req 000000003868811a length 1025/16384 zsI ==> 0 [002] d..1 7828.532867: ncm_unwrap_ntb: K: ncm_unwrap_ntb toprocess: 1025 [002] d..1 7828.532867: ncm_unwrap_ntb: K: ncm_unwrap_ntb nth: 1751999342 [002] d..1 7828.532868: ncm_unwrap_ntb: K: ncm_unwrap_ntb seq: 0xce67 [002] d..1 7828.532868: ncm_unwrap_ntb: K: ncm_unwrap_ntb blk_len: 0x400 [002] d..1 7828.532868: ncm_unwrap_ntb: K: ncm_unwrap_ntb ndp_len: 0x10 [002] d..1 7828.532869: ncm_unwrap_ntb: K: Parsed NTB with 1 frames In this case, the giveback is of 1025 bytes and block length is 1024. The rest 1 byte (which is 0x00) won't be parsed resulting in drop of all datagrams in rx_list. Same is case with packets of size 2048: [002] d..1 7828.557948: dwc3_gadget_giveback: ep1out: req 0000000011dfd96e length 2049/16384 zsI ==> 0 [002] d..1 7828.557949: ncm_unwrap_ntb: K: ncm_unwrap_ntb nth: 1751999342 [002] d..1 7828.557950: ncm_unwrap_ntb: K: ncm_unwrap_ntb blk_len: 0x800 Lecroy shows one byte coming in extra confirming that the byte is coming in from PC: Transfer 2959 - Bytes Transferred(1025) Timestamp((18.524 843 590) - Transaction 8391 - Data(1025 bytes) Timestamp(18.524 843 590) --- Packet 4063861 Data(1024 bytes) Duration(2.117us) Idle(14.700ns) Timestamp(18.524 843 590) --- Packet 4063863 Data(1 byte) Duration(66.160ns) Time(282.000ns) Timestamp(18.524 845 722) According to Windows driver, no ZLP is needed if wBlockLength is non-zero, because the non-zero wBlockLength has already told the function side the size of transfer to be expected. However, there are in-market NCM devices that rely on ZLP as long as the wBlockLength is multiple of wMaxPacketSize. To deal with such devices, it pads an extra 0 at end so the transfer is no longer multiple of wMaxPacketSize. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: gadget: ncm: Evite soltar datagramas de NTB analizados correctamente. • https://git.kernel.org/stable/c/9f6ce4240a2bf456402c15c06768059e5973f28c https://git.kernel.org/stable/c/059285e04ebb273d32323fbad5431c5b94f77e48 https://git.kernel.org/stable/c/a31cf46d108dabce3df80b3e5c07661e24912151 https://git.kernel.org/stable/c/57ca0e16f393bb21d69734e536e383a3a4c665fd https://git.kernel.org/stable/c/2cb66b62a5d64ccf09b0591ab86fb085fa491fc5 https://git.kernel.org/stable/c/35b604a37ec70d68b19dafd10bbacf1db505c9ca https://git.kernel.org/stable/c/2b7ec68869d50ea998908af43b643bca7e54577e https://git.kernel.org/stable/c/c7f43900bc723203d7554d299a2ce8440 • CWE-476: NULL Pointer Dereference •