cbcvebase.
CVE-2024-35854
published 2024-05-17

CVE-2024-35854: In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash The rehash delayed work…

PriorityP347high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.94%
57.2th percentile
In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash The rehash delayed work migrates filters from one region to another according to the number of available credits. The migrated from region is destroyed at the end of the work if the number of credits is non-negative as the assumption is that this is indicative of migration being complete. This assumption is incorrect as a non-negative number of credits can also be the result of a failed migration. The destruction of a region that still has filters referencing it can result in a use-after-free [1]. Fix by not destroying the region if migration failed. [1] BUG: KASAN: slab-use-after-free in mlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230 Read of size 8 at addr ffff8881735319e8 by task kworker/0:31/3858 CPU: 0 PID: 3858 Comm: kworker/0:31 Tainted: G W 6.9.0-rc2-custom-00782-gf2275c2157d8 #5 Hardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019 Workqueue: mlxsw_core mlxsw_sp_acl_tcam_vregion_rehash_work Call Trace: dump_stack_lvl+0xc6/0x120 print_report+0xce/0x670 kasan_report+0xd7/0x110 mlxsw_sp_acl_ctcam_region_entry_remove+0x21d/0x230 mlxsw_sp_acl_ctcam_entry_del+0x2e/0x70 mlxsw_sp_acl_atcam_entry_del+0x81/0x210 mlxsw_sp_acl_tcam_vchunk_migrate_all+0x3cd/0xb50 mlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300 process_one_work+0x8eb/0x19b0 worker_thread+0x6c9/0xf70 kthread+0x2c9/0x3b0 ret_from_fork+0x4d/0x80 ret_from_fork_asm+0x1a/0x30 Allocated by task 174: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x8f/0xa0 __kmalloc+0x19c/0x360 mlxsw_sp_acl_tcam_region_create+0xdf/0x9c0 mlxsw_sp_acl_tcam_vregion_rehash_work+0x954/0x1300 process_one_work+0x8eb/0x19b0 worker_thread+0x6c9/0xf70 kthread+0x2c9/0x3b0 ret_from_fork+0x4d/0x80 ret_from_fork_asm+0x1a/0x30 Freed by task 7: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 poison_slab_objec

Affected

26 ranges· showing 25
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.90-1 (bookworm)linux 6.1.90-1 (bookworm)
linuxlinux
linuxlinux>= c9c9af91f1d9a636aecc55302c792538e549a430 < e118e7ea24d1392878ef85926627c6bc640c4388e118e7ea24d1392878ef85926627c6bc640c4388
linuxlinux>= c9c9af91f1d9a636aecc55302c792538e549a430 < a429a912d6c779807f4d72a6cc0a1efaaa3613e1a429a912d6c779807f4d72a6cc0a1efaaa3613e1
linuxlinux>= c9c9af91f1d9a636aecc55302c792538e549a430 < 4c89642ca47fb620914780c7c51d8d12482011214c89642ca47fb620914780c7c51d8d1248201121
linuxlinux>= c9c9af91f1d9a636aecc55302c792538e549a430 < 813e2ab753a8f8c243a39ede20c2e0adc15f3887813e2ab753a8f8c243a39ede20c2e0adc15f3887
linuxlinux>= c9c9af91f1d9a636aecc55302c792538e549a430 < 311eeaa7b9e26aba5b3d57b09859f07d8e9fc049311eeaa7b9e26aba5b3d57b09859f07d8e9fc049
linuxlinux>= c9c9af91f1d9a636aecc55302c792538e549a430 < a02687044e124f8ccb427cd3632124a4e1a7d7c1a02687044e124f8ccb427cd3632124a4e1a7d7c1
linuxlinux>= c9c9af91f1d9a636aecc55302c792538e549a430 < 54225988889931467a9b55fdbef534079b66551954225988889931467a9b55fdbef534079b665519
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.216-15.10.216-1
linuxlinux_kernel>= 0 < 6.1.90-16.1.90-1
linuxlinux_kernel>= 0 < 6.8.9-16.8.9-1
linuxlinux_kernel>= 0 < 6.8.9-16.8.9-1
linuxlinux_kernel>= 0 < 5.4.0-189.2095.4.0-189.209
linuxlinux_kernel>= 0 < 5.15.0-116.1265.15.0-116.126
linuxlinux_kernel>= 0 < 6.8.0-40.406.8.0-40.40
linuxlinux_kernel>= 5.1 < 5.4.2755.4.275
linuxlinux_kernel>= 5.11 < 5.15.1585.15.158
linuxlinux_kernel>= 5.16 < 6.1.906.1.90
linuxlinux_kernel>= 5.5 < 5.10.2165.10.216
linuxlinux_kernel>= 6.2 < 6.6.306.6.30
linuxlinux_kernel>= 6.7 < 6.8.96.8.9
msrcazl3_hyperv-daemons_6.6.29.1-1_on_azure_linux_3.0

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_debian8.8HIGH
vendor_msrc8.8HIGH
vendor_redhat8.8HIGH
vendor_ubuntu7.0HIGH
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