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CVE-2021-47215— net/mlx5e: kTLS, Fix crash in RX resync flow

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，该漏洞源于同步流程中会导致系统崩溃或其他不稳定行为。

CVSS 9.8 · Critical EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux e9ce991bce5bacf71641bd0f72f4b7c589529f40< ebeda7a9528ae690e6bf12791a868f0cca8391f2 affected
e9ce991bce5bacf71641bd0f72f4b7c589529f40< cc4a9cc03faa6d8db1a6954bb536f2c1e63bdff6 affected
5.13 affected
< 5.13 unaffected
5.15.5≤ 5.15.* unaffected
5.16≤ * unaffected
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I. Basic Information for CVE-2021-47215

Vulnerability Information
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Vulnerability Title
net/mlx5e: kTLS, Fix crash in RX resync flow
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: kTLS, Fix crash in RX resync flow For the TLS RX resync flow, we maintain a list of TLS contexts that require some attention, to communicate their resync information to the HW. Here we fix list corruptions, by protecting the entries against movements coming from resync_handle_seq_match(), until their resync handling in napi is fully completed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/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，该漏洞源于同步流程中会导致系统崩溃或其他不稳定行为。
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 e9ce991bce5bacf71641bd0f72f4b7c589529f40 ~ ebeda7a9528ae690e6bf12791a868f0cca8391f2 -
Linux Linux 5.13 -

II. Public POCs for CVE-2021-47215

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III. Intelligence Information for CVE-2021-47215

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Other References for CVE-2021-47215 (2)

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

CVE-2021-47203 8.8 HIGH scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()
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-2021-47194 7.8 HIGH cfg80211: call cfg80211_stop_ap when switch from P2P_GO type
CVE-2021-47209 7.8 HIGH sched/fair: Prevent dead task groups from regaining cfs_rq's
CVE-2021-47191 7.1 HIGH scsi: scsi_debug: Fix out-of-bound read in resp_readcap16()
CVE-2021-47219 7.1 HIGH scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs()
CVE-2021-47210 usb: typec: tipd: Remove WARN_ON in tps6598x_block_read
CVE-2021-47198 scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine
CVE-2021-47211 ALSA: usb-audio: fix null pointer dereference on pointer cs_desc
CVE-2021-47207 ALSA: gus: fix null pointer dereference on pointer block
CVE-2021-47212 net/mlx5: Update error handler for UCTX and UMEM
CVE-2021-47214 hugetlb, userfaultfd: fix reservation restore on userfaultfd error

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-2021-47215

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