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CVE-2026-43295— rapidio: replace rio_free_net() with kfree() in rio_scan_alloc_net()

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rio_scan_alloc_net函数中idtab分配失败时未正确释放内存，可能导致空悬指针。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux e6b585ca6e81badeb3d42db3cc408174f2826034< 83e579c2f7f6b1706323d744833b26470049dcc2 affected
e6b585ca6e81badeb3d42db3cc408174f2826034< 34a4f233df5eef5f1f113b2196142c0568b387f8 affected
e6b585ca6e81badeb3d42db3cc408174f2826034< fecf292c6691970897396190855aa38826b7104e affected
e6b585ca6e81badeb3d42db3cc408174f2826034< 649c2e853608cad0b0cba545555d168e67f094b3 affected
e6b585ca6e81badeb3d42db3cc408174f2826034< 87272e3e70ec4b666885bd520ff77463c11444ef affected
e6b585ca6e81badeb3d42db3cc408174f2826034< e5a732bfe29451e16abf9c6f07ce5948b22f3d59 affected
e6b585ca6e81badeb3d42db3cc408174f2826034< 78812c4fb7ed242d5961bf1337a49070d6487c94 affected
e6b585ca6e81badeb3d42db3cc408174f2826034< 666183dcdd9ad3b8156a1df7f204f728f720380f affected
… +10 more rows
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I. Basic Information for CVE-2026-43295

Vulnerability Information
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Vulnerability Title
rapidio: replace rio_free_net() with kfree() in rio_scan_alloc_net()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: rapidio: replace rio_free_net() with kfree() in rio_scan_alloc_net() When idtab allocation fails, net is not registered with rio_add_net() yet, so kfree(net) is sufficient to release the memory. Set mport->net to NULL to avoid dangling pointer.
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rio_scan_alloc_net函数中idtab分配失败时未正确释放内存，可能导致空悬指针。
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 e6b585ca6e81badeb3d42db3cc408174f2826034 ~ 83e579c2f7f6b1706323d744833b26470049dcc2 -
Linux Linux 4.6 -

II. Public POCs for CVE-2026-43295

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III. Intelligence Information for CVE-2026-43295

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Patches & Fixes for CVE-2026-43295 (8)

Same Patch Batch · Linux · 2026-05-08 · 197 CVEs total

CVE-2026-43341 9.8 CRITICAL net/ipv6: ioam6: prevent schema length wraparound in trace fill
CVE-2026-43402 9.8 CRITICAL kthread: consolidate kthread exit paths to prevent use-after-free
CVE-2026-43414 9.8 CRITICAL scsi: qla2xxx: Completely fix fcport double free
CVE-2026-43384 9.8 CRITICAL net/tcp-ao: Fix MAC comparison to be constant-time
CVE-2026-43304 9.8 CRITICAL libceph: define and enforce CEPH_MAX_KEY_LEN
CVE-2026-43379 9.8 CRITICAL ksmbd: fix use-after-free in smb_lazy_parent_lease_break_close()
CVE-2026-43376 9.8 CRITICAL ksmbd: fix use-after-free by using call_rcu() for oplock_info
CVE-2026-43465 9.8 CRITICAL net/mlx5e: RX, Fix XDP multi-buf frag counting for striding RQ
CVE-2026-43378 9.8 CRITICAL smb: server: fix use-after-free in smb2_open()
CVE-2026-43383 9.4 CRITICAL net/tcp-md5: Fix MAC comparison to be constant-time
CVE-2026-43406 9.1 CRITICAL libceph: prevent potential out-of-bounds reads in process_message_header()
CVE-2026-43407 9.1 CRITICAL libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply()
CVE-2026-43284 8.8 HIGH xfrm: esp: avoid in-place decrypt on shared skb frags
CVE-2026-43334 8.8 HIGH Bluetooth: SMP: force responder MITM requirements before building the pairing response
CVE-2026-43322 8.8 HIGH Bluetooth: hci_sync: Fix UAF in le_read_features_complete
CVE-2026-43403 8.8 HIGH nsfs: tighten permission checks for ns iteration ioctls
CVE-2026-43391 8.8 HIGH nsfs: tighten permission checks for handle opening
CVE-2026-43291 8.3 HIGH net: nfc: nci: Fix parameter validation for packet data
CVE-2026-43365 8.2 HIGH xfs: fix undersized l_iclog_roundoff values
CVE-2026-43466 8.2 HIGH net/mlx5e: Fix DMA FIFO desync on error CQE SQ recovery

Showing top 20 of 197 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-43295

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