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CVE-2021-47183— scsi: lpfc: Fix link down processing to address NULL pointer dereference

EPSS 0.01% · P3
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I. Basic Information for CVE-2021-47183

Vulnerability Information
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Vulnerability Title
scsi: lpfc: Fix link down processing to address NULL pointer dereference
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix link down processing to address NULL pointer dereference If an FC link down transition while PLOGIs are outstanding to fabric well known addresses, outstanding ABTS requests may result in a NULL pointer dereference. Driver unload requests may hang with repeated "2878" log messages. The Link down processing results in ABTS requests for outstanding ELS requests. The Abort WQEs are sent for the ELSs before the driver had set the link state to down. Thus the driver is sending the Abort with the expectation that an ABTS will be sent on the wire. The Abort request is stalled waiting for the link to come up. In some conditions the driver may auto-complete the ELSs thus if the link does come up, the Abort completions may reference an invalid structure. Fix by ensuring that Abort set the flag to avoid link traffic if issued due to conditions where the link failed.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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，该漏洞源于存在空指针取消引用漏洞。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 70f3c073362ef7b5e55c92b83eb2dd9a7fb4e9bf ~ 04c1af683270e4709a594bb1691b8800b945035a -
LinuxLinux 2.6.38 -

II. Public POCs for CVE-2021-47183

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III. Intelligence Information for CVE-2021-47183

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Same Patch Batch · Linux · 2024-04-10 · 39 CVEs total

CVE-2021-47210usb: typec: tipd: Remove WARN_ON in tps6598x_block_read
CVE-2021-47200drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap
CVE-2021-47201iavf: free q_vectors before queues in iavf_disable_vf
CVE-2021-47202thermal: Fix NULL pointer dereferences in of_thermal_ functions
CVE-2021-47203scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()
CVE-2021-47204net: dpaa2-eth: fix use-after-free in dpaa2_eth_remove
CVE-2021-47205clk: sunxi-ng: Unregister clocks/resets when unbinding
CVE-2021-47206usb: host: ohci-tmio: check return value after calling platform_get_resource()
CVE-2021-47207ALSA: gus: fix null pointer dereference on pointer block
CVE-2021-47209sched/fair: Prevent dead task groups from regaining cfs_rq's
CVE-2021-47199net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
CVE-2021-47211ALSA: usb-audio: fix null pointer dereference on pointer cs_desc
CVE-2021-47212net/mlx5: Update error handler for UCTX and UMEM
CVE-2021-47214hugetlb, userfaultfd: fix reservation restore on userfaultfd error
CVE-2021-47215net/mlx5e: kTLS, Fix crash in RX resync flow
CVE-2021-47216scsi: advansys: Fix kernel pointer leak
CVE-2021-47217x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails
CVE-2021-47218selinux: fix NULL-pointer dereference when hashtab allocation fails
CVE-2021-47219scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs()
CVE-2021-47190perf bpf: Avoid memory leak from perf_env__insert_btf()

Showing top 20 of 39 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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