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CVE-2022-49362— NFSD: Fix potential use-after-free in nfsd_file_put()

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nfsd_file_put函数可能在使用已释放的@nf指针。

CVSS 9.8 · Critical EPSS 0.66% · P51

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 9862064ca81f9b9da8ebe26c86cf2b10c293ba1a< ada1757b259f353cade47037ee0a0249b4cddad3 affected
a98e5b3d958ac697aafb3d077eb2cca4a731b7ee< 261eabe19cb28e4a8587a4442d257b543d7c2d57 affected
999397926ab3f78c7d1235cc4ca6e3c89d2769bf< 333dcc94ebf53f79f3dc0e7a7c16700bc7ff7e57 affected
999397926ab3f78c7d1235cc4ca6e3c89d2769bf< b6c71c66b0ad8f2b59d9bc08c7a5079b110bec01 affected
5.18 affected
< 5.18 unaffected
5.18.4≤ 5.18.* unaffected
5.19≤ * unaffected
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I. Basic Information for CVE-2022-49362

Vulnerability Information
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Vulnerability Title
NFSD: Fix potential use-after-free in nfsd_file_put()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix potential use-after-free in nfsd_file_put() nfsd_file_put_noref() can free @nf, so don't dereference @nf immediately upon return from nfsd_file_put_noref().
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nfsd_file_put函数可能在使用已释放的@nf指针。
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 9862064ca81f9b9da8ebe26c86cf2b10c293ba1a ~ ada1757b259f353cade47037ee0a0249b4cddad3 -
Linux Linux 5.18 -

II. Public POCs for CVE-2022-49362

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III. Intelligence Information for CVE-2022-49362

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Patches & Fixes for CVE-2022-49362 (4)

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

CVE-2022-49407 9.8 CRITICAL dlm: fix plock invalid read
CVE-2022-49149 9.8 CRITICAL rxrpc: Fix call timer start racing with call destruction
CVE-2022-49094 9.8 CRITICAL net/tls: fix slab-out-of-bounds bug in decrypt_internal
CVE-2022-49561 9.8 CRITICAL netfilter: conntrack: re-fetch conntrack after insertion
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-2022-49201 9.8 CRITICAL ibmvnic: fix race between xmit and reset
CVE-2022-49093 9.8 CRITICAL skbuff: fix coalescing for page_pool fragment recycling
CVE-2022-49280 9.8 CRITICAL NFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-49194 9.8 CRITICAL net: bcmgenet: Use stronger register read/writes to assure ordering
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-2022-49500 8.8 HIGH wl1251: dynamically allocate memory used for DMA
CVE-2022-49238 8.8 HIGH ath11k: free peer for station when disconnect from AP for QCA6390/WCN6855
CVE-2022-49328 8.8 HIGH mt76: fix use-after-free by removing a non-RCU wcid pointer
CVE-2022-49470 8.8 HIGH Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event
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-2022-49479 8.8 HIGH mt76: fix tx status related use-after-free race on station removal
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-2022-49362

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