CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2021-46965 – mtd: physmap: physmap-bt1-rom: Fix unintentional stack access
https://notcve.org/view.php?id=CVE-2021-46965
In the Linux kernel, the following vulnerability has been resolved: mtd: physmap: physmap-bt1-rom: Fix unintentional stack access Cast &data to (char *) in order to avoid unintentionally accessing the stack. Notice that data is of type u32, so any increment to &data will be in the order of 4-byte chunks, and this piece of code is actually intended to be a byte offset. Addresses-Coverity-ID: 1497765 ("Out-of-bounds access") En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mtd: physmap: physmap-bt1-rom: corrige el acceso involuntario a la pila. Transmite &data a (char *) para evitar el acceso involuntario a la pila. Tenga en cuenta que los datos son de tipo u32, por lo que cualquier incremento en &data será del orden de fragmentos de 4 bytes, y este fragmento de código en realidad está destinado a ser un desplazamiento de bytes. Direcciones-Coverity-ID: 1497765 ("Acceso fuera de límites") • https://git.kernel.org/stable/c/b3e79e7682e075326df8041b826b03453acacd0a https://git.kernel.org/stable/c/34ec706bf0b7c4ca249a729c1bcb91f706c7a7be https://git.kernel.org/stable/c/4e4ebb827bf09311469ffd9d0c14ed40ed9747aa https://git.kernel.org/stable/c/4d786870e3262ec098a3b4ed10b895176bc66ecb https://git.kernel.org/stable/c/683313993dbe1651c7aa00bb42a041d70e914925 •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2021-46964 – scsi: qla2xxx: Reserve extra IRQ vectors
https://notcve.org/view.php?id=CVE-2021-46964
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Reserve extra IRQ vectors Commit a6dcfe08487e ("scsi: qla2xxx: Limit interrupt vectors to number of CPUs") lowers the number of allocated MSI-X vectors to the number of CPUs. That breaks vector allocation assumptions in qla83xx_iospace_config(), qla24xx_enable_msix() and qla2x00_iospace_config(). Either of the functions computes maximum number of qpairs as: ha->max_qpairs = ha->msix_count - 1 (MB interrupt) - 1 (default response queue) - 1 (ATIO, in dual or pure target mode) max_qpairs is set to zero in case of two CPUs and initiator mode. The number is then used to allocate ha->queue_pair_map inside qla2x00_alloc_queues(). No allocation happens and ha->queue_pair_map is left NULL but the driver thinks there are queue pairs available. qla2xxx_queuecommand() tries to find a qpair in the map and crashes: if (ha->mqenable) { uint32_t tag; uint16_t hwq; struct qla_qpair *qpair = NULL; tag = blk_mq_unique_tag(cmd->request); hwq = blk_mq_unique_tag_to_hwq(tag); qpair = ha->queue_pair_map[hwq]; # <- HERE if (qpair) return qla2xxx_mqueuecommand(host, cmd, qpair); } BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] SMP PTI CPU: 0 PID: 72 Comm: kworker/u4:3 Tainted: G W 5.10.0-rc1+ #25 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014 Workqueue: scsi_wq_7 fc_scsi_scan_rport [scsi_transport_fc] RIP: 0010:qla2xxx_queuecommand+0x16b/0x3f0 [qla2xxx] Call Trace: scsi_queue_rq+0x58c/0xa60 blk_mq_dispatch_rq_list+0x2b7/0x6f0 ? __sbitmap_get_word+0x2a/0x80 __blk_mq_sched_dispatch_requests+0xb8/0x170 blk_mq_sched_dispatch_requests+0x2b/0x50 __blk_mq_run_hw_queue+0x49/0xb0 __blk_mq_delay_run_hw_queue+0xfb/0x150 blk_mq_sched_insert_request+0xbe/0x110 blk_execute_rq+0x45/0x70 __scsi_execute+0x10e/0x250 scsi_probe_and_add_lun+0x228/0xda0 __scsi_scan_target+0xf4/0x620 ? • https://git.kernel.org/stable/c/a6dcfe08487e5e83b6b4214c959a9577a9ed2d9f https://git.kernel.org/stable/c/4ecd42dec858b6632c5f024fe13e9ad6c30f2734 https://git.kernel.org/stable/c/0f86d66b38501e3ac66cf2d9f9f8ad6838bad0e6 https://git.kernel.org/stable/c/f02d4086a8f36a0e1aaebf559b54cf24a177a486 •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2021-46963 – scsi: qla2xxx: Fix crash in qla2xxx_mqueuecommand()
https://notcve.org/view.php?id=CVE-2021-46963
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix crash in qla2xxx_mqueuecommand() RIP: 0010:kmem_cache_free+0xfa/0x1b0 Call Trace: qla2xxx_mqueuecommand+0x2b5/0x2c0 [qla2xxx] scsi_queue_rq+0x5e2/0xa40 __blk_mq_try_issue_directly+0x128/0x1d0 blk_mq_request_issue_directly+0x4e/0xb0 Fix incorrect call to free srb in qla2xxx_mqueuecommand(), as srb is now allocated by upper layers. This fixes smatch warning of srb unintended free. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: qla2xxx: Soluciona falla en qla2xxx_mqueuecommand() RIP: 0010:kmem_cache_free+0xfa/0x1b0 Rastreo de llamadas: qla2xxx_mqueuecommand+0x2b5/0x2c0 [qla2xxx] scsi_queue_rq+0x5e2/0xa40 __blk_mq_try_issue_ directamente+0x128 /0x1d0 blk_mq_request_issue_directly+0x4e/0xb0 Se corrigió la llamada incorrecta para liberar srb en qla2xxx_mqueuecommand(), ya que srb ahora está asignado por capas superiores. Esto corrige la advertencia de srb gratuito no deseado. • https://git.kernel.org/stable/c/64a8c5018a4b21b04a756a56c495ef47c14e92d9 https://git.kernel.org/stable/c/dea6ee7173039d489977c9ed92e3749154615db4 https://git.kernel.org/stable/c/af2a0c51b1205327f55a7e82e530403ae1d42cbb https://git.kernel.org/stable/c/4a1cc2f71bc57cf8dee6f58e7d2355a43aabb312 https://git.kernel.org/stable/c/c5ab9b67d8b061de74e2ca51bf787ee599bd7f89 https://git.kernel.org/stable/c/77509a238547863040a42d57c72403f7d4c89a8f https://git.kernel.org/stable/c/702cdaa2c6283c135ef16d52e0e4e3c1005aa538 https://git.kernel.org/stable/c/80ef24175df2cba3860d0369d1c662b49 •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2021-46962 – mmc: uniphier-sd: Fix a resource leak in the remove function
https://notcve.org/view.php?id=CVE-2021-46962
In the Linux kernel, the following vulnerability has been resolved: mmc: uniphier-sd: Fix a resource leak in the remove function A 'tmio_mmc_host_free()' call is missing in the remove function, in order to balance a 'tmio_mmc_host_alloc()' call in the probe. This is done in the error handling path of the probe, but not in the remove function. Add the missing call. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mmc: uniphier-sd: corrige una fuga de recursos en la función de eliminación Falta una llamada 'tmio_mmc_host_free()' en la función de eliminación, para equilibrar un 'tmio_mmc_host_alloc()' llamar a la sonda. Esto se hace en la ruta de manejo de errores de la sonda, pero no en la función de eliminación. Agrega la llamada faltante. • https://git.kernel.org/stable/c/3fd784f745dd1747863775a99ec749619ee6759c https://git.kernel.org/stable/c/0d8941b9b2d3e7b3481fdf43b1a6189d162175b7 https://git.kernel.org/stable/c/25ac6ce65f1ab458982d15ec1caf441acd37106a https://git.kernel.org/stable/c/ebe0f12cf4c044f812c6d17011531582f9ac8bb3 https://git.kernel.org/stable/c/d6e7fda496978f2763413b5523557b38dc2bf6c2 https://git.kernel.org/stable/c/e29c84857e2d51aa017ce04284b962742fb97d9e •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2021-46961 – irqchip/gic-v3: Do not enable irqs when handling spurious interrups
https://notcve.org/view.php?id=CVE-2021-46961
In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3: Do not enable irqs when handling spurious interrups We triggered the following error while running our 4.19 kernel with the pseudo-NMI patches backported to it: [ 14.816231] ------------[ cut here ]------------ [ 14.816231] kernel BUG at irq.c:99! [ 14.816232] Internal error: Oops - BUG: 0 [#1] SMP [ 14.816232] Process swapper/0 (pid: 0, stack limit = 0x(____ptrval____)) [ 14.816233] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G O 4.19.95.aarch64 #14 [ 14.816233] Hardware name: evb (DT) [ 14.816234] pstate: 80400085 (Nzcv daIf +PAN -UAO) [ 14.816234] pc : asm_nmi_enter+0x94/0x98 [ 14.816235] lr : asm_nmi_enter+0x18/0x98 [ 14.816235] sp : ffff000008003c50 [ 14.816235] pmr_save: 00000070 [ 14.816237] x29: ffff000008003c50 x28: ffff0000095f56c0 [ 14.816238] x27: 0000000000000000 x26: ffff000008004000 [ 14.816239] x25: 00000000015e0000 x24: ffff8008fb916000 [ 14.816240] x23: 0000000020400005 x22: ffff0000080817cc [ 14.816241] x21: ffff000008003da0 x20: 0000000000000060 [ 14.816242] x19: 00000000000003ff x18: ffffffffffffffff [ 14.816243] x17: 0000000000000008 x16: 003d090000000000 [ 14.816244] x15: ffff0000095ea6c8 x14: ffff8008fff5ab40 [ 14.816244] x13: ffff8008fff58b9d x12: 0000000000000000 [ 14.816245] x11: ffff000008c8a200 x10: 000000008e31fca5 [ 14.816246] x9 : ffff000008c8a208 x8 : 000000000000000f [ 14.816247] x7 : 0000000000000004 x6 : ffff8008fff58b9e [ 14.816248] x5 : 0000000000000000 x4 : 0000000080000000 [ 14.816249] x3 : 0000000000000000 x2 : 0000000080000000 [ 14.816250] x1 : 0000000000120000 x0 : ffff0000095f56c0 [ 14.816251] Call trace: [ 14.816251] asm_nmi_enter+0x94/0x98 [ 14.816251] el1_irq+0x8c/0x180 (IRQ C) [ 14.816252] gic_handle_irq+0xbc/0x2e4 [ 14.816252] el1_irq+0xcc/0x180 (IRQ B) [ 14.816253] arch_timer_handler_virt+0x38/0x58 [ 14.816253] handle_percpu_devid_irq+0x90/0x240 [ 14.816253] generic_handle_irq+0x34/0x50 [ 14.816254] __handle_domain_irq+0x68/0xc0 [ 14.816254] gic_handle_irq+0xf8/0x2e4 [ 14.816255] el1_irq+0xcc/0x180 (IRQ A) [ 14.816255] arch_cpu_idle+0x34/0x1c8 [ 14.816255] default_idle_call+0x24/0x44 [ 14.816256] do_idle+0x1d0/0x2c8 [ 14.816256] cpu_startup_entry+0x28/0x30 [ 14.816256] rest_init+0xb8/0xc8 [ 14.816257] start_kernel+0x4c8/0x4f4 [ 14.816257] Code: 940587f1 d5384100 b9401001 36a7fd01 (d4210000) [ 14.816258] Modules linked in: start_dp(O) smeth(O) [ 15.103092] ---[ end trace 701753956cb14aa8 ]--- [ 15.103093] Kernel panic - not syncing: Fatal exception in interrupt [ 15.103099] SMP: stopping secondary CPUs [ 15.103100] Kernel Offset: disabled [ 15.103100] CPU features: 0x36,a2400218 [ 15.103100] Memory Limit: none which is cause by a 'BUG_ON(in_nmi())' in nmi_enter(). From the call trace, we can find three interrupts (noted A, B, C above): interrupt (A) is preempted by (B), which is further interrupted by (C). Subsequent investigations show that (B) results in nmi_enter() being called, but that it actually is a spurious interrupt. Furthermore, interrupts are reenabled in the context of (B), and (C) fires with NMI priority. We end-up with a nested NMI situation, something we definitely do not want to (and cannot) handle. The bug here is that spurious interrupts should never result in any state change, and we should just return to the interrupted context. Moving the handling of spurious interrupts as early as possible in the GICv3 handler fixes this issue. [maz: rewrote commit message, corrected Fixes: tag] En el kernel de Linux, se resolvió la siguiente vulnerabilidad: irqchip/gic-v3: no habilitar irqs cuando se manejan interrupciones espurias. Activamos el siguiente error al ejecutar nuestro kernel 4.19 con los parches pseudo-NMI respaldados: [14.816231] - -----------[ cortar aquí ]------------ ¡ERROR del kernel [14.816231] en irq.c:99! • https://git.kernel.org/stable/c/3f1f3234bc2db1c16b9818b9a15a5d58ad45251c https://git.kernel.org/stable/c/e7ea8e46e3b777be26aa855fe07778c415f24926 https://git.kernel.org/stable/c/7be4db5c2b59fa77071c93ca4329876fb9777202 https://git.kernel.org/stable/c/ea817ac1014c04f47885532b55f5d0898deadfba https://git.kernel.org/stable/c/3f72d3709f53af72835af7dc8b15ba61611a0e36 https://git.kernel.org/stable/c/a97709f563a078e259bf0861cd259aa60332890a •