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CVE-2024-56700— media: wl128x: Fix atomicity violation in fmc_send_cmd()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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nfs/blocklayout模块中未正确处理无效块设备的注销，导致空指针取消引用。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux e8454ff7b9a4d56f02c095bff12d3c92ef4c7fa6< d16109c9fdc1b8cea4fe63b42e06e926c3f68990 affected
e8454ff7b9a4d56f02c095bff12d3c92ef4c7fa6< 3c818ad07e964bca3d27adac1e1f50e1e3c9180e affected
e8454ff7b9a4d56f02c095bff12d3c92ef4c7fa6< d7408a052aa1b4f6fb6f1c7a8877b84017a07ac9 affected
e8454ff7b9a4d56f02c095bff12d3c92ef4c7fa6< ed228b74d8a500380150965d5becabf9a1e33141 affected
e8454ff7b9a4d56f02c095bff12d3c92ef4c7fa6< 372dc9509122e5d45d4c12978e31c3c7d00aaca4 affected
e8454ff7b9a4d56f02c095bff12d3c92ef4c7fa6< 378ce4e08ca2b1ac7bbf1d57b68643ca4226c5f8 affected
e8454ff7b9a4d56f02c095bff12d3c92ef4c7fa6< 2e63c908de357048180516b84740ed62dac0b269 affected
e8454ff7b9a4d56f02c095bff12d3c92ef4c7fa6< 80a3b2ee01eecf22dfa06968b3cde92c691dea10 affected
… +12 more rows
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I. Basic Information for CVE-2024-56700

Vulnerability Information
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Vulnerability Title
media: wl128x: Fix atomicity violation in fmc_send_cmd()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: wl128x: Fix atomicity violation in fmc_send_cmd() Atomicity violation occurs when the fmc_send_cmd() function is executed simultaneously with the modification of the fmdev->resp_skb value. Consider a scenario where, after passing the validity check within the function, a non-null fmdev->resp_skb variable is assigned a null value. This results in an invalid fmdev->resp_skb variable passing the validity check. As seen in the later part of the function, skb = fmdev->resp_skb; when the invalid fmdev->resp_skb passes the check, a null pointer dereference error may occur at line 478, evt_hdr = (void *)skb->data; To address this issue, it is recommended to include the validity check of fmdev->resp_skb within the locked section of the function. This modification ensures that the value of fmdev->resp_skb does not change during the validation process, thereby maintaining its validity. This possible bug is found by an experimental static analysis tool developed by our team. This tool analyzes the locking APIs to extract function pairs that can be concurrently executed, and then analyzes the instructions in the paired functions to identify possible concurrency bugs including data races and atomicity violations.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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nfs/blocklayout模块中未正确处理无效块设备的注销，导致空指针取消引用。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux e8454ff7b9a4d56f02c095bff12d3c92ef4c7fa6 ~ d16109c9fdc1b8cea4fe63b42e06e926c3f68990 -
Linux Linux 2.6.39 -

II. Public POCs for CVE-2024-56700

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III. Intelligence Information for CVE-2024-56700

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Patches & Fixes for CVE-2024-56700 (9)

Same Patch Batch · Linux · 2024-12-28 · 32 CVEs total

CVE-2024-56704 8.4 HIGH 9p/xen: fix release of IRQ
CVE-2024-56684 8.4 HIGH mailbox: mtk-cmdq: fix wrong use of sizeof in cmdq_get_clocks()
CVE-2024-56677 7.8 HIGH powerpc/fadump: Move fadump_cma_init to setup_arch() after initmem_init()
CVE-2024-56706 7.8 HIGH s390/cpum_sf: Fix and protect memory allocation of SDBs with mutex
CVE-2024-56692 7.8 HIGH f2fs: fix to do sanity check on node blkaddr in truncate_node()
CVE-2024-56693 7.8 HIGH brd: defer automatic disk creation until module initialization succeeds
CVE-2024-56681 7.8 HIGH crypto: bcm - add error check in the ahash_hmac_init function
CVE-2024-56688 7.5 HIGH sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport
CVE-2024-56703 7.5 HIGH ipv6: Fix soft lockups in fib6_select_path under high next hop churn
CVE-2024-56694 7.5 HIGH bpf: fix recursive lock when verdict program return SK_PASS
CVE-2024-56708 EDAC/igen6: Avoid segmentation fault on module unload
CVE-2024-56682 irqchip/riscv-aplic: Prevent crash when MSI domain is missing
CVE-2024-56707 octeontx2-pf: handle otx2_mbox_get_rsp errors in otx2_dmac_flt.c
CVE-2024-56705 media: atomisp: Add check for rgby_data memory allocation failure
CVE-2024-56676 thermal: testing: Initialize some variables annoteded with _free()
CVE-2024-56678 powerpc/mm/fault: Fix kfence page fault reporting
CVE-2024-56701 powerpc/pseries: Fix dtl_access_lock to be a rw_semaphore
CVE-2024-56702 bpf: Mark raw_tp arguments with PTR_MAYBE_NULL
CVE-2024-56699 s390/pci: Fix potential double remove of hotplug slot
CVE-2024-56698 usb: dwc3: gadget: Fix looping of queued SG entries

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-56700

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