cbcvebase.
CVE-2024-26745
published 2024-04-04

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…

PriorityP415medium4.4CVSS 3.1
AVLACLPRHUINSUCNINAH
EPSS
0.22%
12.6th percentile
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 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 han

Affected

18 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.82-1 (bookworm)linux 6.1.82-1 (bookworm)
linuxlinux——
linuxlinux——
linuxlinux——
linuxlinux>= 5.18.18 < 5.195.19
linuxlinux>= 5.19.2 < 5.205.20
linuxlinux>= b1fc44eaa9ba31e28c4125d6b9205a3582b47b5d < 7eb95e0af5c9c2e6fad50356eaf32d216d0e7bc37eb95e0af5c9c2e6fad50356eaf32d216d0e7bc3
linuxlinux>= b1fc44eaa9ba31e28c4125d6b9205a3582b47b5d < d4d1e4b1513d975961de7bb4f75e450a92d65ebfd4d1e4b1513d975961de7bb4f75e450a92d65ebf
linuxlinux>= b1fc44eaa9ba31e28c4125d6b9205a3582b47b5d < 5da6d306f315344af1ca2eff4bd9b10b130f0c285da6d306f315344af1ca2eff4bd9b10b130f0c28
linuxlinux>= b1fc44eaa9ba31e28c4125d6b9205a3582b47b5d < 09a3c1e46142199adcee372a420b024b4fc6105109a3c1e46142199adcee372a420b024b4fc61051
linuxlinux_kernel——
linuxlinux_kernel——
linuxlinux_kernel>= 0 < 6.1.82-16.1.82-1
linuxlinux_kernel>= 0 < 6.7.9-16.7.9-1
linuxlinux_kernel>= 0 < 6.7.9-16.7.9-1
linuxlinux_kernel>= 5.19.2 < 6.1.816.1.81
linuxlinux_kernel>= 6.2 < 6.6.216.6.21
linuxlinux_kernel>= 6.7 < 6.7.96.7.9

CVSS provenance

nvdv3.14.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
osv4.4MEDIUM
vendor_debian4.4MEDIUM
vendor_redhat4.4MEDIUM
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