CVE-2024-35855— mlxsw: spectrum_acl_tcam: Fix possible use-after-free during activity update
Possible ATT&CK Techniques 1AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 2bffc5322fd8679e879cd6370881ee50cf141ada< 1b73f6e4ea770410a937a8db98f77e52594d23a0 | affected |
2bffc5322fd8679e879cd6370881ee50cf141ada< e24d2487424779c02760ff50cd9021b8676e19ef | affected | ||
2bffc5322fd8679e879cd6370881ee50cf141ada< c17976b42d546ee118ca300db559630ee96fb758 | affected | ||
2bffc5322fd8679e879cd6370881ee50cf141ada< b996e8699da810e4c915841d6aaef761007f933a | affected | ||
2bffc5322fd8679e879cd6370881ee50cf141ada< feabdac2057e863d0e140a2adf3d232eb4882db4 | affected | ||
2bffc5322fd8679e879cd6370881ee50cf141ada< b183b915beef818a25e3154d719ca015a1ae0770 | affected | ||
2bffc5322fd8679e879cd6370881ee50cf141ada< 79b5b4b18bc85b19d3a518483f9abbbe6d7b3ba4 | affected | ||
5.1 | affected | ||
| … +8 more rows | |||
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I. Basic Information for CVE-2024-35855
Vulnerability Information
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Vulnerability Title
mlxsw: spectrum_acl_tcam: Fix possible use-after-free during activity update
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix possible use-after-free during activity update The rule activity update delayed work periodically traverses the list of configured rules and queries their activity from the device. As part of this task it accesses the entry pointed by 'ventry->entry', but this entry can be changed concurrently by the rehash delayed work, leading to a use-after-free [1]. Fix by closing the race and perform the activity query under the 'vregion->lock' mutex. [1] BUG: KASAN: slab-use-after-free in mlxsw_sp_acl_tcam_flower_rule_activity_get+0x121/0x140 Read of size 8 at addr ffff8881054ed808 by task kworker/0:18/181 CPU: 0 PID: 181 Comm: kworker/0:18 Not tainted 6.9.0-rc2-custom-00781-gd5ab772d32f7 #2 Hardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019 Workqueue: mlxsw_core mlxsw_sp_acl_rule_activity_update_work Call Trace: <TASK> dump_stack_lvl+0xc6/0x120 print_report+0xce/0x670 kasan_report+0xd7/0x110 mlxsw_sp_acl_tcam_flower_rule_activity_get+0x121/0x140 mlxsw_sp_acl_rule_activity_update_work+0x219/0x400 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 1039: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x8f/0xa0 __kmalloc+0x19c/0x360 mlxsw_sp_acl_tcam_entry_create+0x7b/0x1f0 mlxsw_sp_acl_tcam_vchunk_migrate_all+0x30d/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 Freed by task 1039: 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_vchunk_migrate_all+0x3d7/0xb50 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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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
II. Public POCs for CVE-2024-35855
| # | POC Description | Source Link | Shenlong Link |
|---|
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Mailing List Discussions for CVE-2024-35855 (1)
Other References for CVE-2024-35855 (7)
Same Patch Batch · Linux · 2024-05-17 · 135 CVEs total
| CVE-2023-52687 | 9.8 CRITICAL | crypto: safexcel - Add error handling for dma_map_sg() calls |
| CVE-2024-35843 | 8.8 HIGH | iommu/vt-d: Use device rbtree in iopf reporting path |
| CVE-2024-35804 | 8.8 HIGH | KVM: x86: Mark target gfn of emulated atomic instruction as dirty |
| CVE-2024-35811 | 8.8 HIGH | wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach |
| CVE-2024-27416 | 8.8 HIGH | Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST |
| CVE-2024-27415 | 8.8 HIGH | netfilter: bridge: confirm multicast packets before passing them up the stack |
| CVE-2024-35856 | 8.8 HIGH | Bluetooth: btusb: mediatek: Fix double free of skb in coredump |
| CVE-2024-35834 | 8.2 HIGH | xsk: recycle buffer in case Rx queue was full |
| CVE-2024-27404 | 8.2 HIGH | mptcp: fix data races on remote_id |
| CVE-2023-52669 | 8.2 HIGH | crypto: s390/aes - Fix buffer overread in CTR mode |
| CVE-2024-35789 | 8.0 HIGH | wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes |
| CVE-2024-35835 | 7.8 HIGH | net/mlx5e: fix a double-free in arfs_create_groups |
| CVE-2024-35810 | 7.8 HIGH | drm/vmwgfx: Fix the lifetime of the bo cursor memory |
| CVE-2024-35808 | 7.8 HIGH | md/dm-raid: don't call md_reap_sync_thread() directly |
| CVE-2023-52667 | 7.8 HIGH | net/mlx5e: fix a potential double-free in fs_any_create_groups |
| CVE-2024-35798 | 7.8 HIGH | btrfs: fix race in read_extent_buffer_pages() |
| CVE-2024-35839 | 7.8 HIGH | netfilter: bridge: replace physindev with physinif in nf_bridge_info |
| CVE-2024-35792 | 7.8 HIGH | crypto: rk3288 - Fix use after free in unprepare |
| CVE-2024-27403 | 7.8 HIGH | netfilter: nft_flow_offload: reset dst in route object after setting up flow |
| CVE-2024-35791 | 7.8 HIGH | KVM: SVM: Flush pages under kvm->lock to fix UAF in svm_register_enc_region() |
Showing top 20 of 135 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
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