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CVE-2026-53167— fuse: limit FUSE_NOTIFY_RETRIEVE to uptodate folios

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基金会开源的操作系统Linux所使用的内核。 Linux kernel 2.6.36版本存在安全漏洞，该漏洞源于FUSE_NOTIFY_RETRIEVE限制不当，可能导致未初始化数据泄露。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.13% · P2

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a< feafe8ccb1584254f59fbd4946d6ca7ef1e3e99c affected
2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a< 651801d75ad0897dbd331b3cc6a4da3e78f60d42 affected
2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a< 4e14f29473eda18fb2af082dd2fd4c12139862cd affected
2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a< 8bef2f840b43e0879478fe3aaa9ff2f0b80798a5 affected
2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a< 68a9282d5ea5b8780d59122505ad633e6daede90 affected
2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a< 56763afa013444a9d84ca1b74e4b7130942177ba affected
2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a< 1fb8735a3a4d894f8c1f90b741a3ab1d3817f9bd affected
2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a< 4e3d1b2c48ca6c55f1e9ca7f8dccc76f120f276c affected
… +10 more rows
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I. Basic Information for CVE-2026-53167

Vulnerability Information
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Vulnerability Title
fuse: limit FUSE_NOTIFY_RETRIEVE to uptodate folios
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fuse: limit FUSE_NOTIFY_RETRIEVE to uptodate folios FUSE_NOTIFY_RETRIEVE must be limited to uptodate folios; !uptodate folios can contain uninitialized data. Since FUSE_NOTIFY_RETRIEVE is intended to only return data that is already in the page cache and not wait for data from the FUSE daemon, treat !uptodate folios as if they weren't present. This only has security impact on systems that don't enable automatic zero-initialization of all page allocations via CONFIG_INIT_ON_ALLOC_DEFAULT_ON or init_on_alloc=1.
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基金会开源的操作系统Linux所使用的内核。 Linux kernel 2.6.36版本存在安全漏洞，该漏洞源于FUSE_NOTIFY_RETRIEVE限制不当，可能导致未初始化数据泄露。
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 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a ~ feafe8ccb1584254f59fbd4946d6ca7ef1e3e99c -
Linux Linux 2.6.36 -

II. Public POCs for CVE-2026-53167

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III. Intelligence Information for CVE-2026-53167

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Patches & Fixes for CVE-2026-53167 (8)

Proof of Concept for CVE-2026-53167 (1)

Same Patch Batch · Linux · 2026-06-25 · 146 CVEs total

CVE-2026-53247 9.8 CRITICAL net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown
CVE-2026-53215 9.8 CRITICAL net: mvpp2: refill RX buffers before XDP or skb use
CVE-2026-53216 9.8 CRITICAL net: mvpp2: limit XDP frame size to the RX buffer
CVE-2026-53246 9.8 CRITICAL sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing
CVE-2026-53151 9.8 CRITICAL rxrpc: Fix the ACK parser to extract the SACK table for parsing
CVE-2026-53221 9.8 CRITICAL ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
CVE-2026-53260 9.8 CRITICAL tcp: Add preempt_{disable,enable}_nested() in reqsk_queue_hash_req().
CVE-2026-53175 9.8 CRITICAL inet: frags: fix use-after-free caused by the fqdir_pre_exit() flush
CVE-2026-53176 9.8 CRITICAL IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN
CVE-2026-53228 9.8 CRITICAL ipv6: sit: reload inner IPv6 header after GSO offloads
CVE-2026-53131 9.4 CRITICAL netfilter: require Ethernet MAC header before using eth_hdr()
CVE-2026-53225 9.1 CRITICAL sctp: fix uninit-value in __sctp_rcv_asconf_lookup()
CVE-2026-53224 9.1 CRITICAL sctp: validate embedded INIT chunk and address list lengths in cookie
CVE-2026-53186 9.1 CRITICAL RDMA/srp: bound SRP_RSP sense copy by the received length
CVE-2026-53240 8.8 HIGH xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload
CVE-2026-53170 8.8 HIGH accel/ethosu: reject DMA commands with uninitialized length
CVE-2026-53248 8.8 HIGH net: airoha: Fix use-after-free in metadata dst teardown
CVE-2026-53200 8.8 HIGH KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX
CVE-2026-53198 8.8 HIGH ksmbd: fix use-after-free of a deferred file_lock on double SMB2_CANCEL
CVE-2026-53188 8.8 HIGH RDMA/core: Validate the passed in fops for ib_get_ucaps()

Showing top 20 of 146 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53167

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