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CVE-2024-49852— scsi: elx: libefc: Fix potential use after free in efc_nport_vport_del()

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scsi:elx:libefc子系统中efc_nport_vport_del函数中的释放后重用问题。

AI Predicted 5.5 Difficulty: Hard EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux fcd427303eb90aa3cb08e7e0b68e0e67a6d47346< 16a570f07d870a285b0c0b0d1ca4dff79e8aa5ff affected
fcd427303eb90aa3cb08e7e0b68e0e67a6d47346< abc71e89170ed32ecf0a5a29f31aa711e143e941 affected
fcd427303eb90aa3cb08e7e0b68e0e67a6d47346< baeb8628ab7f4577740f00e439d3fdf7c876b0ff affected
fcd427303eb90aa3cb08e7e0b68e0e67a6d47346< 7c2908985e4ae0ea1b526b3916de9e5351650908 affected
fcd427303eb90aa3cb08e7e0b68e0e67a6d47346< 98752fcd076a8cbc978016eae7125b4971be1eec affected
fcd427303eb90aa3cb08e7e0b68e0e67a6d47346< 2e4b02fad094976763af08fec2c620f4f8edd9ae affected
5.14 affected
< 5.14 unaffected
… +6 more rows
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I. Basic Information for CVE-2024-49852

Vulnerability Information
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Vulnerability Title
scsi: elx: libefc: Fix potential use after free in efc_nport_vport_del()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: elx: libefc: Fix potential use after free in efc_nport_vport_del() The kref_put() function will call nport->release if the refcount drops to zero. The nport->release release function is _efc_nport_free() which frees "nport". But then we dereference "nport" on the next line which is a use after free. Re-order these lines to avoid the use after free.
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scsi:elx:libefc子系统中efc_nport_vport_del函数中的释放后重用问题。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux fcd427303eb90aa3cb08e7e0b68e0e67a6d47346 ~ 16a570f07d870a285b0c0b0d1ca4dff79e8aa5ff -
Linux Linux 5.14 -

II. Public POCs for CVE-2024-49852

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III. Intelligence Information for CVE-2024-49852

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Patches & Fixes for CVE-2024-49852 (5)

Same Patch Batch · Linux · 2024-10-21 · 372 CVEs total

CVE-2024-50043 9.8 CRITICAL nfsd: fix possible badness in FREE_STATEID
CVE-2022-48985 9.8 CRITICAL net: mana: Fix race on per-CQ variable napi work_done
CVE-2024-47695 9.8 CRITICAL RDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds
CVE-2024-50033 9.8 CRITICAL slip: make slhc_remember() more robust against malicious packets
CVE-2024-49855 9.8 CRITICAL nbd: fix race between timeout and normal completion
CVE-2024-50047 9.8 CRITICAL smb: client: fix UAF in async decryption
CVE-2024-50046 9.8 CRITICAL NFSv4: Prevent NULL-pointer dereference in nfs42_complete_copies()
CVE-2022-49003 9.8 CRITICAL nvme: fix SRCU protection of nvme_ns_head list
CVE-2024-49996 9.4 CRITICAL cifs: Fix buffer overflow when parsing NFS reparse points
CVE-2024-47678 9.4 CRITICAL icmp: change the order of rate limits
CVE-2022-49017 8.8 HIGH tipc: re-fetch skb cb after tipc_msg_validate
CVE-2024-50029 8.8 HIGH Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync
CVE-2024-50041 8.8 HIGH i40e: Fix macvlan leak by synchronizing access to mac_filter_hash
CVE-2024-49939 8.8 HIGH wifi: rtw89: avoid to add interface to list twice when SER
CVE-2022-48960 8.8 HIGH net: hisilicon: Fix potential use-after-free in hix5hd2_rx()
CVE-2022-48962 8.8 HIGH net: hisilicon: Fix potential use-after-free in hisi_femac_rx()
CVE-2022-48964 8.8 HIGH ravb: Fix potential use-after-free in ravb_rx_gbeth()
CVE-2022-49015 8.8 HIGH net: hsr: Fix potential use-after-free
CVE-2022-48967 8.8 HIGH NFC: nci: Bounds check struct nfc_target arrays
CVE-2024-49930 8.8 HIGH wifi: ath11k: fix array out-of-bound access in SoC stats

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-49852

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