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CVE-2022-49492— nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags

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nvme_alloc_admin_tags中未检查admin_q的错误状态。

AI Predicted 5.5 Difficulty: Hard EPSS 0.29% · P21

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 35b489d32fcc37e8735f41aa794b24cf9d1e74f5< 8321b17789f614414206af07e17ce4751c95dc76 affected
35b489d32fcc37e8735f41aa794b24cf9d1e74f5< 9e649471b396fa0139d53919354ce1eace9b9a24 affected
35b489d32fcc37e8735f41aa794b24cf9d1e74f5< 8da2b7bdb47e94bbc4062a3978c708926bcb022c affected
35b489d32fcc37e8735f41aa794b24cf9d1e74f5< f76729662650cd7bc8f8194e057af381370349a7 affected
35b489d32fcc37e8735f41aa794b24cf9d1e74f5< af98940dd33c9f9e1beb4f71c0a39260100e2a65 affected
35b489d32fcc37e8735f41aa794b24cf9d1e74f5< 906c81dba8ee8057523859b5e1a2479e9fd34860 affected
35b489d32fcc37e8735f41aa794b24cf9d1e74f5< 7a28556082d1fbcbc599baf1c24252dfc73efefc affected
35b489d32fcc37e8735f41aa794b24cf9d1e74f5< 54a4c1e47d1b2585e74920399455bd9abbfb2bd7 affected
… +12 more rows
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I. Basic Information for CVE-2022-49492

Vulnerability Information
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Vulnerability Title
nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags In nvme_alloc_admin_tags, the admin_q can be set to an error (typically -ENOMEM) if the blk_mq_init_queue call fails to set up the queue, which is checked immediately after the call. However, when we return the error message up the stack, to nvme_reset_work the error takes us to nvme_remove_dead_ctrl() nvme_dev_disable() nvme_suspend_queue(&dev->queues[0]). Here, we only check that the admin_q is non-NULL, rather than not an error or NULL, and begin quiescing a queue that never existed, leading to bad / NULL pointer dereference.
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nvme_alloc_admin_tags中未检查admin_q的错误状态。
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 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 ~ 8321b17789f614414206af07e17ce4751c95dc76 -
Linux Linux 3.19 -

II. Public POCs for CVE-2022-49492

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III. Intelligence Information for CVE-2022-49492

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Patches & Fixes for CVE-2022-49492 (9)

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

CVE-2022-49561 9.8 CRITICAL netfilter: conntrack: re-fetch conntrack after insertion
CVE-2022-49149 9.8 CRITICAL rxrpc: Fix call timer start racing with call destruction
CVE-2022-49362 9.8 CRITICAL NFSD: Fix potential use-after-free in nfsd_file_put()
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-2022-49407 9.8 CRITICAL dlm: fix plock invalid read
CVE-2022-49280 9.8 CRITICAL NFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-49356 9.8 CRITICAL SUNRPC: Trap RDMA segment overflows
CVE-2022-49058 9.1 CRITICAL cifs: potential buffer overflow in handling symlinks
CVE-2022-49328 8.8 HIGH mt76: fix use-after-free by removing a non-RCU wcid pointer
CVE-2022-49114 8.8 HIGH scsi: libfc: Fix use after free in fc_exch_abts_resp()
CVE-2022-49535 8.8 HIGH scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI
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-2022-49519 8.8 HIGH ath10k: skip ath10k_halt during suspend for driver state RESTARTING

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-2022-49492

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