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CVE-2024-42094— net/iucv: Avoid explicit cpumask var allocation on stack

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，该漏洞源于在CONFIG_CPUMASK_OFFSTACK=y内核中，显式在栈上分配cpumask变量不被推荐，因为它可能导致潜在的栈溢出。

AI Predicted 5.3 Difficulty: Theoretical EPSS 0.24% · P13

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2356f4cb191100a5e92d537f13e5efdbc697e9cb< 2b085521be5292016097b5e7ca81b26be3f7098d affected
2356f4cb191100a5e92d537f13e5efdbc697e9cb< 842afb47d84536fc976fece8fb6c54bea711ad1a affected
2356f4cb191100a5e92d537f13e5efdbc697e9cb< 9dadab0db7d904413ea1cdaa13f127da05c31e71 affected
2356f4cb191100a5e92d537f13e5efdbc697e9cb< 0af718a690acc089aa1bbb95a93df833d864ef53 affected
2356f4cb191100a5e92d537f13e5efdbc697e9cb< d85ca8179a54ff8cf1e1f8c3c9e3799831319bae affected
2356f4cb191100a5e92d537f13e5efdbc697e9cb< 724e7965af054079242b8d6f7e50ee226730a756 affected
2356f4cb191100a5e92d537f13e5efdbc697e9cb< 2d090c7f7be3b26fcb80ac04d08a4a8062b1d959 affected
2356f4cb191100a5e92d537f13e5efdbc697e9cb< be4e1304419c99a164b4c0e101c7c2a756b635b9 affected
… +10 more rows
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I. Basic Information for CVE-2024-42094

Vulnerability Information
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Vulnerability Title
net/iucv: Avoid explicit cpumask var allocation on stack
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/iucv: Avoid explicit cpumask var allocation on stack For CONFIG_CPUMASK_OFFSTACK=y kernel, explicit allocation of cpumask variable on stack is not recommended since it can cause potential stack overflow. Instead, kernel code should always use *cpumask_var API(s) to allocate cpumask var in config-neutral way, leaving allocation strategy to CONFIG_CPUMASK_OFFSTACK. Use *cpumask_var API(s) to address it.
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，该漏洞源于在CONFIG_CPUMASK_OFFSTACK=y内核中，显式在栈上分配cpumask变量不被推荐，因为它可能导致潜在的栈溢出。
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 2356f4cb191100a5e92d537f13e5efdbc697e9cb ~ 2b085521be5292016097b5e7ca81b26be3f7098d -
Linux Linux 2.6.21 -

II. Public POCs for CVE-2024-42094

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III. Intelligence Information for CVE-2024-42094

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Other References for CVE-2024-42094 (8)

Same Patch Batch · Linux · 2024-07-29 · 121 CVEs total

CVE-2024-41081 9.8 CRITICAL ila: block BH in ila_output()
CVE-2024-41073 9.8 CRITICAL nvme: avoid double free special payload
CVE-2024-41040 9.8 CRITICAL net/sched: Fix UAF when resolving a clash
CVE-2024-41091 8.8 HIGH tun: add missing verification for short frame
CVE-2024-42083 8.8 HIGH ionic: fix kernel panic due to multi-buffer handling
CVE-2024-41062 8.8 HIGH bluetooth/l2cap: sync sock recv cb and release
CVE-2024-41046 8.8 HIGH net: ethernet: lantiq_etop: fix double free in detach
CVE-2024-41090 8.8 HIGH tap: add missing verification for short frame
CVE-2024-41057 7.8 HIGH cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()
CVE-2024-41041 7.8 HIGH udp: Set SOCK_RCU_FREE earlier in udp_lib_get_port().
CVE-2024-42064 7.8 HIGH drm/amd/display: Skip pipe if the pipe idx not set properly
CVE-2024-41017 7.8 HIGH jfs: don't walk off the end of ealist
CVE-2024-41049 7.8 HIGH filelock: fix potential use-after-free in posix_lock_inode
CVE-2024-42066 7.8 HIGH drm/xe: Fix potential integer overflow in page size calculation
CVE-2024-41051 7.8 HIGH cachefiles: wait for ondemand_object_worker to finish when dropping object
CVE-2024-42067 7.8 HIGH bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()
CVE-2024-42068 7.8 HIGH bpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro()
CVE-2024-42069 7.8 HIGH net: mana: Fix possible double free in error handling path
CVE-2024-42071 7.8 HIGH ionic: use dev_consume_skb_any outside of napi
CVE-2024-41064 7.8 HIGH powerpc/eeh: avoid possible crash when edev->pdev changes

Showing top 20 of 121 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42094

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