CVE-2024-40920— net: bridge: mst: fix suspicious rcu usage in br_mst_set_state
Possible ATT&CK Techniques 1AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 9
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 8ca9a750fc711911ef616ceb627d07357b04545e< caaa2129784a04dcade0ea92c12e6ff90bbd23d8 | affected |
4488617e5e995a09abe4d81add5fb165674edb59< 7caefa2771722e65496d85b62e1dc4442b7d1345 | affected | ||
e43dd2b1ec746e105b7db5f9ad6ef14685a615a4< 406bfc04b01ee47e4c626f77ecc7d9f85135b166 | affected | ||
3a7c1661ae1383364cd6092d851f5e5da64d476b< 546ceb1dfdac866648ec959cbc71d9525bd73462 | affected | ||
a2b01e65d9ba8af2bb086d3b7288ca53a07249ac | affected | ||
6.8.12< 6.9 | affected | ||
6.1.93< 6.1.95 | affected | ||
6.6.33< 6.6.35 | affected | ||
| … +1 more rows | |||
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I. Basic Information for CVE-2024-40920
Vulnerability Information
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Vulnerability Title
net: bridge: mst: fix suspicious rcu usage in br_mst_set_state
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: bridge: mst: fix suspicious rcu usage in br_mst_set_state I converted br_mst_set_state to RCU to avoid a vlan use-after-free but forgot to change the vlan group dereference helper. Switch to vlan group RCU deref helper to fix the suspicious rcu usage warning.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 net:bridge:mst 组件在 br_mst_set_state 函数中存在可疑的 RCU 使用问题。
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-2024-40920
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2024-40920 (4)
Same Patch Batch · Linux · 2024-07-12 · 122 CVEs total
| CVE-2024-40999 | 9.8 CRITICAL | net: ena: Add validation for completion descriptors consistency |
| CVE-2024-40907 | 9.8 CRITICAL | ionic: fix kernel panic in XDP_TX action |
| CVE-2024-40923 | 9.8 CRITICAL | vmxnet3: disable rx data ring on dma allocation failure |
| CVE-2024-40983 | 9.8 CRITICAL | tipc: force a dst refcount before doing decryption |
| CVE-2024-40937 | 9.8 CRITICAL | gve: Clear napi->skb before dev_kfree_skb_any() |
| CVE-2024-40910 | 8.8 HIGH | ax25: Fix refcount imbalance on inbound connections |
| CVE-2024-40911 | 8.8 HIGH | wifi: cfg80211: Lock wiphy in cfg80211_get_station |
| CVE-2024-40941 | 8.1 HIGH | wifi: iwlwifi: mvm: don't read past the mfuart notifcation |
| CVE-2024-40953 | 7.9 HIGH | KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin() |
| CVE-2024-40954 | 7.8 HIGH | net: do not leave a dangling sk pointer, when socket creation fails |
| CVE-2024-40918 | 7.8 HIGH | parisc: Try to fix random segmentation faults in package builds |
| CVE-2024-40924 | 7.8 HIGH | drm/i915/dpt: Make DPT object unshrinkable |
| CVE-2024-40925 | 7.8 HIGH | block: fix request.queuelist usage in flush |
| CVE-2024-40943 | 7.8 HIGH | ocfs2: fix races between hole punching and AIO+DIO |
| CVE-2024-40947 | 7.8 HIGH | ima: Avoid blocking in RCU read-side critical section |
| CVE-2024-40949 | 7.8 HIGH | mm: shmem: fix getting incorrect lruvec when replacing a shmem folio |
| CVE-2024-40990 | 7.8 HIGH | RDMA/mlx5: Add check for srq max_sge attribute |
| CVE-2024-40986 | 7.8 HIGH | dmaengine: xilinx: xdma: Fix data synchronisation in xdma_channel_isr() |
| CVE-2024-40989 | 7.8 HIGH | KVM: arm64: Disassociate vcpus from redistributor region on teardown |
| CVE-2024-40984 | 7.8 HIGH | ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine." |
Showing top 20 of 122 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- 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 - CVE-2026-74575
thunderbolt: Prevent XDomain delayed work use-after-free on
Same vendor: Linux
- 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 - CVE-2026-74575
thunderbolt: Prevent XDomain delayed work use-after-free on
V. Comments for CVE-2024-40920
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