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CVE-2021-47203— scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()

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lpfc_drain_txq中的list_add存在损坏问题。

CVSS 8.8 · High EPSS 0.35% · P27

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984< ad4776b5eb2e58af1226847fcd3b4f6d051674dd affected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984< ec70d80a8642900086447ba0cdc79e3f44d42e8f affected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984< f05a0191b90156e539cccc189b9d87ca2a4d9305 affected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984< b291d147d0268e93ad866f8bc820ea14497abc9b affected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984< 16bcbfb56d759c25665f786e33ec633b9508a08f affected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984< c097bd5a59162156d9c2077a2f58732ffbaa9fca affected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984< 814d3610c4ce86e8cf285b2cdac0057a42e82de5 affected
2a9bf3d011303d8da64cd5e0e7fdd95f0c143984< 99154581b05c8fb22607afb7c3d66c1bace6aa5d affected
… +10 more rows
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I. Basic Information for CVE-2021-47203

Vulnerability Information
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Vulnerability Title
scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq() When parsing the txq list in lpfc_drain_txq(), the driver attempts to pass the requests to the adapter. If such an attempt fails, a local "fail_msg" string is set and a log message output. The job is then added to a completions list for cancellation. Processing of any further jobs from the txq list continues, but since "fail_msg" remains set, jobs are added to the completions list regardless of whether a wqe was passed to the adapter. If successfully added to txcmplq, jobs are added to both lists resulting in list corruption. Fix by clearing the fail_msg string after adding a job to the completions list. This stops the subsequent jobs from being added to the completions list unless they had an appropriate failure.
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lpfc_drain_txq中的list_add存在损坏问题。
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 2a9bf3d011303d8da64cd5e0e7fdd95f0c143984 ~ ad4776b5eb2e58af1226847fcd3b4f6d051674dd -
Linux Linux 2.6.36 -

II. Public POCs for CVE-2021-47203

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III. Intelligence Information for CVE-2021-47203

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Other References for CVE-2021-47203 (8)

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

CVE-2021-47215 9.8 CRITICAL net/mlx5e: kTLS, Fix crash in RX resync flow
CVE-2021-47183 8.8 HIGH scsi: lpfc: Fix link down processing to address NULL pointer dereference
CVE-2021-47184 8.8 HIGH i40e: Fix NULL ptr dereference on VSI filter sync
CVE-2021-47201 7.8 HIGH iavf: free q_vectors before queues in iavf_disable_vf
CVE-2021-47200 7.8 HIGH drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap
CVE-2024-26815 7.8 HIGH net/sched: taprio: proper TCA_TAPRIO_TC_ENTRY_INDEX check
CVE-2021-47197 7.8 HIGH net/mlx5e: nullify cq->dbg pointer in mlx5_debug_cq_remove()
CVE-2021-47196 7.8 HIGH RDMA/core: Set send and receive CQ before forwarding to the driver
CVE-2021-47188 7.8 HIGH scsi: ufs: core: Improve SCSI abort handling
CVE-2021-47189 7.8 HIGH btrfs: fix memory ordering between normal and ordered work functions
CVE-2021-47209 7.8 HIGH sched/fair: Prevent dead task groups from regaining cfs_rq's
CVE-2021-47194 7.8 HIGH cfg80211: call cfg80211_stop_ap when switch from P2P_GO type
CVE-2021-47219 7.1 HIGH scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs()
CVE-2021-47191 7.1 HIGH scsi: scsi_debug: Fix out-of-bound read in resp_readcap16()
CVE-2021-47211 ALSA: usb-audio: fix null pointer dereference on pointer cs_desc
CVE-2021-47210 usb: typec: tipd: Remove WARN_ON in tps6598x_block_read
CVE-2021-47212 net/mlx5: Update error handler for UCTX and UMEM
CVE-2021-47214 hugetlb, userfaultfd: fix reservation restore on userfaultfd error
CVE-2021-47216 scsi: advansys: Fix kernel pointer leak
CVE-2021-47217 x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47203

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