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CVE-2026-53233— netdev: fix double-free in netdev_nl_bind_rx_doit()

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 6.12版本存在安全漏洞，该漏洞源于netdev_nl_bind_rx_doit()函数存在双重释放问题，可能导致释放后重用。

AI Predicted 4.4 Difficulty: Easy EPSS 0.13% · P2

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 170aafe35cb98e0f3fbacb446ea86389fbce22ea< e055ca9205d3eb6aec3e5fe4ecc18abbbf18c599 affected
170aafe35cb98e0f3fbacb446ea86389fbce22ea< c299321bc6232770ce378d6fa6bc46004d2d7fdb affected
170aafe35cb98e0f3fbacb446ea86389fbce22ea< 9b019376cbee10c4f9184d1745fa37d156e36f30 affected
170aafe35cb98e0f3fbacb446ea86389fbce22ea< c849de7d8757a7af801fc4a4058f71d481d367f2 affected
6.12 affected
< 6.12 unaffected
6.12.94≤ 6.12.* unaffected
6.18.36≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-53233

Vulnerability Information
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Vulnerability Title
netdev: fix double-free in netdev_nl_bind_rx_doit()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netdev: fix double-free in netdev_nl_bind_rx_doit() Sashiko flags that genlmsg_reply() always consumes the skb. The error path calls nlmsg_free(rsp) so we can't jump directly to it. Let's not unbind, just propagate the error to the user. This is the typical way of handling genlmsg_reply() failures. They shouldn't happen unless user does something silly like calling the kernel with an already-full rcvbuf.
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 6.12版本存在安全漏洞，该漏洞源于netdev_nl_bind_rx_doit()函数存在双重释放问题，可能导致释放后重用。
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 170aafe35cb98e0f3fbacb446ea86389fbce22ea ~ e055ca9205d3eb6aec3e5fe4ecc18abbbf18c599 -
Linux Linux 6.12 -

II. Public POCs for CVE-2026-53233

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III. Intelligence Information for CVE-2026-53233

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Patches & Fixes for CVE-2026-53233 (4)

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

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-2026-53151 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-2026-53247 9.8 CRITICAL net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown
CVE-2026-53216 9.8 CRITICAL net: mvpp2: limit XDP frame size to the RX buffer
CVE-2026-53260 9.8 CRITICAL tcp: Add preempt_{disable,enable}_nested() in reqsk_queue_hash_req().
CVE-2026-53246 9.8 CRITICAL sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing
CVE-2026-53175 9.8 CRITICAL inet: frags: fix use-after-free caused by the fqdir_pre_exit() flush
CVE-2026-53215 9.8 CRITICAL net: mvpp2: refill RX buffers before XDP or skb use
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-2026-53171 8.8 HIGH accel/ethosu: fix arithmetic issues in dma_length()
CVE-2026-53232 8.8 HIGH net: phy: clean the sfp upstream if phy probing fails
CVE-2026-53159 8.8 HIGH misc: fastrpc: fix DMA address corruption due to find_vma misuse
CVE-2026-53170 8.8 HIGH accel/ethosu: reject DMA commands with uninitialized length
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-2026-53233

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