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CVE-2022-49114— scsi: libfc: Fix use after free in fc_exch_abts_resp()

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: libfc中的释放后重用。

CVSS 8.8 · High EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a< 4a131d4ea8b581ac9b01d3a72754db4848be3232 affected
42e9a92fe6a9095bd68a379aaec7ad2be0337f7a< 499d198494e77b6533251b9b909baf5c101129cb affected
42e9a92fe6a9095bd68a379aaec7ad2be0337f7a< 6044ad64f41c87382cfeeca281573d1886d80cbe affected
42e9a92fe6a9095bd68a379aaec7ad2be0337f7a< 5cf2ce8967b0d98c8cfa4dc42ef4fcf080f5c836 affected
42e9a92fe6a9095bd68a379aaec7ad2be0337f7a< 1d7effe5fff9d28e45e18ac3a564067c7ddfe898 affected
42e9a92fe6a9095bd68a379aaec7ad2be0337f7a< f581df412bc45c95176e3c808ee2839c05b2ab0c affected
42e9a92fe6a9095bd68a379aaec7ad2be0337f7a< 87909291762d08fdb60d19069d7a89b5b308d0ef affected
42e9a92fe6a9095bd68a379aaec7ad2be0337f7a< 412dd8299b02e4410fe77b8396953c1a8dde183a affected
… +12 more rows
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I. Basic Information for CVE-2022-49114

Vulnerability Information
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Vulnerability Title
scsi: libfc: Fix use after free in fc_exch_abts_resp()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: libfc: Fix use after free in fc_exch_abts_resp() fc_exch_release(ep) will decrease the ep's reference count. When the reference count reaches zero, it is freed. But ep is still used in the following code, which will lead to a use after free. Return after the fc_exch_release() call to avoid use after free.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/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scsi: libfc中的释放后重用。
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 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a ~ 4a131d4ea8b581ac9b01d3a72754db4848be3232 -
Linux Linux 2.6.29 -

II. Public POCs for CVE-2022-49114

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III. Intelligence Information for CVE-2022-49114

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Patches & Fixes for CVE-2022-49114 (9)

Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total

CVE-2022-49362 9.8 CRITICAL NFSD: Fix potential use-after-free in nfsd_file_put()
CVE-2022-49149 9.8 CRITICAL rxrpc: Fix call timer start racing with call destruction
CVE-2022-49561 9.8 CRITICAL netfilter: conntrack: re-fetch conntrack after insertion
CVE-2022-49407 9.8 CRITICAL dlm: fix plock invalid read
CVE-2022-49201 9.8 CRITICAL ibmvnic: fix race between xmit and reset
CVE-2022-49194 9.8 CRITICAL net: bcmgenet: Use stronger register read/writes to assure ordering
CVE-2022-49093 9.8 CRITICAL skbuff: fix coalescing for page_pool fragment recycling
CVE-2022-49260 9.8 CRITICAL crypto: hisilicon/sec - fix the aead software fallback for engine
CVE-2022-49418 9.8 CRITICAL NFSv4: Fix free of uninitialized nfs4_label on referral lookup.
CVE-2022-49094 9.8 CRITICAL net/tls: fix slab-out-of-bounds bug in decrypt_internal
CVE-2022-49356 9.8 CRITICAL SUNRPC: Trap RDMA segment overflows
CVE-2022-49280 9.8 CRITICAL NFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-49058 9.1 CRITICAL cifs: potential buffer overflow in handling symlinks
CVE-2022-49470 8.8 HIGH Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event
CVE-2022-49111 8.8 HIGH Bluetooth: Fix use after free in hci_send_acl
CVE-2022-49471 8.8 HIGH rtw89: cfo: check mac_id to avoid out-of-bounds
CVE-2022-49535 8.8 HIGH scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI
CVE-2022-49238 8.8 HIGH ath11k: free peer for station when disconnect from AP for QCA6390/WCN6855
CVE-2022-49519 8.8 HIGH ath10k: skip ath10k_halt during suspend for driver state RESTARTING
CVE-2022-49138 8.8 HIGH Bluetooth: hci_event: Ignore multiple conn complete events

Showing top 20 of 706 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-49114

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