CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2024-26745 – powerpc/pseries/iommu: IOMMU table is not initialized for kdump over SR-IOV
https://notcve.org/view.php?id=CVE-2024-26745
In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries/iommu: IOMMU table is not initialized for kdump over SR-IOV When kdump kernel tries to copy dump data over SR-IOV, LPAR panics due to NULL pointer exception: Kernel attempted to read user page (0) - exploit attempt? (uid: 0) BUG: Kernel NULL pointer dereference on read at 0x00000000 Faulting instruction address: 0xc000000020847ad4 Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries Modules linked in: mlx5_core(+) vmx_crypto pseries_wdt papr_scm libnvdimm mlxfw tls psample sunrpc fuse overlay squashfs loop CPU: 12 PID: 315 Comm: systemd-udevd Not tainted 6.4.0-Test102+ #12 Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_008) hv:phyp pSeries NIP: c000000020847ad4 LR: c00000002083b2dc CTR: 00000000006cd18c REGS: c000000029162ca0 TRAP: 0300 Not tainted (6.4.0-Test102+) MSR: 800000000280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 48288244 XER: 00000008 CFAR: c00000002083b2d8 DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 1 ... NIP _find_next_zero_bit+0x24/0x110 LR bitmap_find_next_zero_area_off+0x5c/0xe0 Call Trace: dev_printk_emit+0x38/0x48 (unreliable) iommu_area_alloc+0xc4/0x180 iommu_range_alloc+0x1e8/0x580 iommu_alloc+0x60/0x130 iommu_alloc_coherent+0x158/0x2b0 dma_iommu_alloc_coherent+0x3c/0x50 dma_alloc_attrs+0x170/0x1f0 mlx5_cmd_init+0xc0/0x760 [mlx5_core] mlx5_function_setup+0xf0/0x510 [mlx5_core] mlx5_init_one+0x84/0x210 [mlx5_core] probe_one+0x118/0x2c0 [mlx5_core] local_pci_probe+0x68/0x110 pci_call_probe+0x68/0x200 pci_device_probe+0xbc/0x1a0 really_probe+0x104/0x540 __driver_probe_device+0xb4/0x230 driver_probe_device+0x54/0x130 __driver_attach+0x158/0x2b0 bus_for_each_dev+0xa8/0x130 driver_attach+0x34/0x50 bus_add_driver+0x16c/0x300 driver_register+0xa4/0x1b0 __pci_register_driver+0x68/0x80 mlx5_init+0xb8/0x100 [mlx5_core] do_one_initcall+0x60/0x300 do_init_module+0x7c/0x2b0 At the time of LPAR dump, before kexec hands over control to kdump kernel, DDWs (Dynamic DMA Windows) are scanned and added to the FDT. For the SR-IOV case, default DMA window "ibm,dma-window" is removed from the FDT and DDW added, for the device. Now, kexec hands over control to the kdump kernel. When the kdump kernel initializes, PCI busses are scanned and IOMMU group/tables created, in pci_dma_bus_setup_pSeriesLP(). For the SR-IOV case, there is no "ibm,dma-window". The original commit: b1fc44eaa9ba, fixes the path where memory is pre-mapped (direct mapped) to the DDW. When TCEs are direct mapped, there is no need to initialize IOMMU tables. iommu_table_setparms_lpar() only considers "ibm,dma-window" property when initiallizing IOMMU table. In the scenario where TCEs are dynamically allocated for SR-IOV, newly created IOMMU table is not initialized. • https://git.kernel.org/stable/c/b1fc44eaa9ba31e28c4125d6b9205a3582b47b5d https://git.kernel.org/stable/c/b9f08b2649dddd4eb0698cb428b173bb01dd2fc5 https://git.kernel.org/stable/c/58942f672c6d04b6a3cd7866cb459671df881538 https://git.kernel.org/stable/c/7eb95e0af5c9c2e6fad50356eaf32d216d0e7bc3 https://git.kernel.org/stable/c/d4d1e4b1513d975961de7bb4f75e450a92d65ebf https://git.kernel.org/stable/c/5da6d306f315344af1ca2eff4bd9b10b130f0c28 https://git.kernel.org/stable/c/09a3c1e46142199adcee372a420b024b4fc61051 •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-26779 – wifi: mac80211: fix race condition on enabling fast-xmit
https://notcve.org/view.php?id=CVE-2024-26779
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix race condition on enabling fast-xmit fast-xmit must only be enabled after the sta has been uploaded to the driver, otherwise it could end up passing the not-yet-uploaded sta via drv_tx calls to the driver, leading to potential crashes because of uninitialized drv_priv data. Add a missing sta->uploaded check and re-check fast xmit after inserting a sta. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mac80211: corrige la condición de ejecución al habilitar fast-xmit fast-xmit solo debe habilitarse después de que el sta se haya cargado en el controlador; de lo contrario, podría terminar pasando el error sta aún cargada a través de llamadas drv_tx al controlador, lo que genera posibles fallas debido a datos drv_priv no inicializados. Agregue una estación faltante->comprobación cargada y vuelva a verificar la transmisión rápida después de insertar una estación. A vulnerability was found in the mac80211 driver in the Linux kernel. This issue could lead to potential crashes or memory corruption due to of a situation where the driver attempts to utilize data structures that haven't been fully initialized yet. • https://git.kernel.org/stable/c/76fad1174a0cae6fc857b9f88b261a2e4f07d587 https://git.kernel.org/stable/c/85720b69aef177318f4a18efbcc4302228a340e5 https://git.kernel.org/stable/c/5ffab99e070b9f8ae0cf60c3c3602b84eee818dd https://git.kernel.org/stable/c/88c18fd06608b3adee547102505d715f21075c9d https://git.kernel.org/stable/c/eb39bb548bf974acad7bd6780fe11f9e6652d696 https://git.kernel.org/stable/c/54b79d8786964e2f840e8a2ec4a9f9a50f3d4954 https://git.kernel.org/stable/c/281280276b70c822f55ce15b661f6d1d3228aaa9 https://git.kernel.org/stable/c/bcbc84af1183c8cf3d1ca9b78540c2185 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-26778 – fbdev: savage: Error out if pixclock equals zero
https://notcve.org/view.php?id=CVE-2024-26778
In the Linux kernel, the following vulnerability has been resolved: fbdev: savage: Error out if pixclock equals zero The userspace program could pass any values to the driver through ioctl() interface. If the driver doesn't check the value of pixclock, it may cause divide-by-zero error. Although pixclock is checked in savagefb_decode_var(), but it is not checked properly in savagefb_probe(). Fix this by checking whether pixclock is zero in the function savagefb_check_var() before info->var.pixclock is used as the divisor. This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fbdev: savage: error si pixclock es igual a cero. El programa de espacio de usuario podría pasar cualquier valor al controlador a través de la interfaz ioctl(). • https://git.kernel.org/stable/c/224453de8505aede1890f007be973925a3edf6a1 https://git.kernel.org/stable/c/84dce0f6a4cc5b7bfd7242ef9290db8ac1dd77ff https://git.kernel.org/stable/c/512ee6d6041e007ef5bf200c6e388e172a2c5b24 https://git.kernel.org/stable/c/8c54acf33e5adaad6374bf3ec1e3aff0591cc8e1 https://git.kernel.org/stable/c/070398d32c5f3ab0e890374904ad94551c76aec4 https://git.kernel.org/stable/c/bc3c2e58d73b28b9a8789fca84778ee165a72d13 https://git.kernel.org/stable/c/a9ca4e80d23474f90841251f4ac0d941fa337a01 https://git.kernel.org/stable/c/04e5eac8f3ab2ff52fa191c187a46d4fd •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-26777 – fbdev: sis: Error out if pixclock equals zero
https://notcve.org/view.php?id=CVE-2024-26777
In the Linux kernel, the following vulnerability has been resolved: fbdev: sis: Error out if pixclock equals zero The userspace program could pass any values to the driver through ioctl() interface. If the driver doesn't check the value of pixclock, it may cause divide-by-zero error. In sisfb_check_var(), var->pixclock is used as a divisor to caculate drate before it is checked against zero. Fix this by checking it at the beginning. This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fbdev: sis: error si pixclock es igual a cero. El programa de espacio de usuario podría pasar cualquier valor al controlador a través de la interfaz ioctl(). • https://git.kernel.org/stable/c/84246c35ca34207114055a87552a1c4289c8fd7e https://git.kernel.org/stable/c/6db07619d173765bd8622d63809cbfe361f04207 https://git.kernel.org/stable/c/cd36da760bd1f78c63c7078407baf01dd724f313 https://git.kernel.org/stable/c/df6e2088c6f4cad539cf67cba2d6764461e798d1 https://git.kernel.org/stable/c/f329523f6a65c3bbce913ad35473d83a319d5d99 https://git.kernel.org/stable/c/99f1abc34a6dde248d2219d64aa493c76bbdd9eb https://git.kernel.org/stable/c/1d11dd3ea5d039c7da089f309f39c4cd363b924b https://git.kernel.org/stable/c/e421946be7d9bf545147bea8419ef8239 •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2024-26776 – spi: hisi-sfc-v3xx: Return IRQ_NONE if no interrupts were detected
https://notcve.org/view.php?id=CVE-2024-26776
In the Linux kernel, the following vulnerability has been resolved: spi: hisi-sfc-v3xx: Return IRQ_NONE if no interrupts were detected Return IRQ_NONE from the interrupt handler when no interrupt was detected. Because an empty interrupt will cause a null pointer error: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 Call trace: complete+0x54/0x100 hisi_sfc_v3xx_isr+0x2c/0x40 [spi_hisi_sfc_v3xx] __handle_irq_event_percpu+0x64/0x1e0 handle_irq_event+0x7c/0x1cc En el kernel de Linux, se resolvió la siguiente vulnerabilidad: spi: hisi-sfc-v3xx: Devuelve IRQ_NONE si no se detectaron interrupciones. Devuelve IRQ_NONE del controlador de interrupciones cuando no se detectó ninguna interrupción. Porque una interrupción vacía causará un error de puntero nulo: No se puede manejar la desreferencia del puntero NULL del kernel en la dirección virtual 0000000000000008 Seguimiento de llamadas: completo+0x54/0x100 hisi_sfc_v3xx_isr+0x2c/0x40 [spi_hisi_sfc_v3xx] __handle_irq_event_percpu+0x64/0x1e0 handle_ evento_irq+0x7c/0x1cc • https://git.kernel.org/stable/c/e94da8aca2e78ef9ecca02eb211869eacd5504e5 https://git.kernel.org/stable/c/0399d7eba41d9b28f5bdd7757ec21a5b7046858d https://git.kernel.org/stable/c/f19361d570c67e7e014896fa2dacd7d721bf0aa8 https://git.kernel.org/stable/c/d637b5118274701e8448f35953877daf04df18b4 https://git.kernel.org/stable/c/e4168ac25b4bd378bd7dda322d589482a136c1fd https://git.kernel.org/stable/c/de8b6e1c231a95abf95ad097b993d34b31458ec9 https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html •