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CVE-2024-41091— tun: add missing verification for short frame

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，该漏洞源于不正确的输入验证，可能会导致拒绝服务。

CVSS 8.8 · High EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 043d222f93ab8c76b56a3b315cd8692e35affb6c< 32b0aaba5dbc85816898167d9b5d45a22eae82e9 affected
043d222f93ab8c76b56a3b315cd8692e35affb6c< 6100e0237204890269e3f934acfc50d35fd6f319 affected
043d222f93ab8c76b56a3b315cd8692e35affb6c< 589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2 affected
043d222f93ab8c76b56a3b315cd8692e35affb6c< ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146 affected
043d222f93ab8c76b56a3b315cd8692e35affb6c< d5ad89b7d01ed4e66fd04734fc63d6e78536692a affected
043d222f93ab8c76b56a3b315cd8692e35affb6c< a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb affected
043d222f93ab8c76b56a3b315cd8692e35affb6c< 8418f55302fa1d2eeb73e16e345167e545c598a5 affected
043d222f93ab8c76b56a3b315cd8692e35affb6c< 049584807f1d797fc3078b68035450a9769eb5c3 affected
… +10 more rows
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I. Basic Information for CVE-2024-41091

Vulnerability Information
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Vulnerability Title
tun: add missing verification for short frame
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tun: add missing verification for short frame The cited commit missed to check against the validity of the frame length in the tun_xdp_one() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tun_xdp_one-->eth_type_trans() may access the Ethernet header although it can be less than ETH_HLEN. Once transmitted, this could either cause out-of-bound access beyond the actual length, or confuse the underlayer with incorrect or inconsistent header length in the skb metadata. In the alternative path, tun_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted for IFF_TAP. This is to drop any frame shorter than the Ethernet header size just like how tun_get_user() does. CVE: CVE-2024-41091
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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，该漏洞源于不正确的输入验证，可能会导致拒绝服务。
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 043d222f93ab8c76b56a3b315cd8692e35affb6c ~ 32b0aaba5dbc85816898167d9b5d45a22eae82e9 -
Linux Linux 4.20 -

II. Public POCs for CVE-2024-41091

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III. Intelligence Information for CVE-2024-41091

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Other References for CVE-2024-41091 (7)

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

CVE-2024-41040 9.8 CRITICAL net/sched: Fix UAF when resolving a clash
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-2024-41046 8.8 HIGH net: ethernet: lantiq_etop: fix double free in detach
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-2024-41090 8.8 HIGH tap: add missing verification for short frame
CVE-2024-42071 7.8 HIGH ionic: use dev_consume_skb_any outside of napi
CVE-2024-41045 7.8 HIGH bpf: Defer work in bpf_timer_cancel_and_free
CVE-2024-41049 7.8 HIGH filelock: fix potential use-after-free in posix_lock_inode
CVE-2024-41057 7.8 HIGH cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()
CVE-2024-41060 7.8 HIGH drm/radeon: check bo_va->bo is non-NULL before using it
CVE-2024-41059 7.8 HIGH hfsplus: fix uninit-value in copy_name
CVE-2024-42075 7.8 HIGH bpf: Fix remap of arena.
CVE-2024-41064 7.8 HIGH powerpc/eeh: avoid possible crash when edev->pdev changes
CVE-2024-42072 7.8 HIGH bpf: Fix may_goto with negative offset.
CVE-2024-42064 7.8 HIGH drm/amd/display: Skip pipe if the pipe idx not set properly
CVE-2024-41086 7.8 HIGH bcachefs: Fix sb_field_downgrade validation
CVE-2024-41087 7.8 HIGH ata: libata-core: Fix double free on error
CVE-2024-42066 7.8 HIGH drm/xe: Fix potential integer overflow in page size calculation

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-2024-41091

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