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CVE-2024-35854— mlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash

EPSS 0.19% · P41
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I. Basic Information for CVE-2024-35854

Vulnerability Information
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Vulnerability Title
mlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash
Source: NVD (National Vulnerability Database)
Vulnerability Description
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: <TASK> 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 </TASK> 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_object+0x102/0x170 __kasan_slab_free+0x14/0x30 kfree+0xc1/0x290 mlxsw_sp_acl_tcam_region_destroy+0x272/0x310 mlxsw_sp_acl_tcam_vregion_rehash_work+0x731/0x1300 process_one_work+0x8eb/0x19b0 worker_thread+0x6c9/0xf70 kthread+0x2c9/0x3b0 ret_from_fork+0x4d/0x80 ret_from_fork_asm+0x1a/0x30
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于内存释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux c9c9af91f1d9a636aecc55302c792538e549a430 ~ e118e7ea24d1392878ef85926627c6bc640c4388 -
LinuxLinux 5.1 -

II. Public POCs for CVE-2024-35854

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III. Intelligence Information for CVE-2024-35854

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Same Patch Batch · Linux · 2024-05-17 · 135 CVEs total

CVE-2023-52673drm/amd/display: Fix a debugfs null pointer error
CVE-2023-52684firmware: qcom: qseecom: fix memory leaks in error paths
CVE-2023-52683ACPI: LPIT: Avoid u32 multiplication overflow
CVE-2023-52682f2fs: fix to wait on block writeback for post_read case
CVE-2023-52681efivarfs: Free s_fs_info on unmount
CVE-2023-52680ALSA: scarlett2: Add missing error checks to *_ctl_get()
CVE-2023-52679of: Fix double free in of_parse_phandle_with_args_map
CVE-2023-52678drm/amdkfd: Confirm list is non-empty before utilizing list_first_entry in kfd_topology.c
CVE-2023-52677riscv: Check if the code to patch lies in the exit section
CVE-2023-52676bpf: Guard stack limits against 32bit overflow
CVE-2023-52675powerpc/imc-pmu: Add a null pointer check in update_events_in_group()
CVE-2023-52674ALSA: scarlett2: Add clamp() in scarlett2_mixer_ctl_put()
CVE-2024-35838wifi: mac80211: fix potential sta-link leak
CVE-2024-35837net: mvpp2: clear BM pool before initialization
CVE-2024-35836dpll: fix pin dump crash for rebound module
CVE-2024-35835net/mlx5e: fix a double-free in arfs_create_groups
CVE-2024-35834xsk: recycle buffer in case Rx queue was full
CVE-2024-35831io_uring: Fix release of pinned pages when __io_uaddr_map fails
CVE-2024-35829drm/lima: fix a memleak in lima_heap_alloc
CVE-2024-35830media: tc358743: register v4l2 async device only after successful setup

Showing top 20 of 135 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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