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CVE-2026-72450— xfrm: validate selector family and prefixlen during match

CVSS 7.8 · High EPSS 0.18% · P7

Affected Version Matrix 28

VendorProductVersion RangeStatus
LinuxLinux8df5cd51fd70c33aa1776e5cbcd82b0a86649d73< 87a5bbccc7ff4edb3f42fea387124237d2ba91eeaffected
2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71< bd7f202cf77556cff59f68dc30e4cdf40cb6e33baffected
bce1afaa212ec380bf971614f70909a27882b862< a3968ad4195d72c8fddcc6c0ef39da95ac98711aaffected
7d9868180bd1e4cf37e7c5067362658971162366< efa9e3b9f3dea2e1ea4c7edf4edc863faef85986affected
3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563< 78783fefdc8f36879b1a17efa0d3195ea5f2dc5faffected
3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563< 6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfeaffected
3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563< 5a03a2ee17e8259dde631ed84fd8322db06cb2aeaffected
3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563< 40f0b1047918539f0b0f795ac65e35336b4c2c78affected
… +20 more rows
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I. Basic Information for CVE-2026-72450

Vulnerability Information
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Vulnerability Title
xfrm: validate selector family and prefixlen during match
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xfrm: validate selector family and prefixlen during match syzbot reported a shift-out-of-bounds in xfrm_selector_match() due to AF_UNSPEC selector with large prefixlen (e.g. 128) matched against IPv4 flow (when XFRM_STATE_AF_UNSPEC is set). Fix this by: - Rejecting mismatched families in xfrm_selector_match. - Returning false in addr4_match if prefixlen > 32. - Returning false in addr_match if prefixlen > 128 (prevents overflow).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于xfrm_selector_match()函数未正确验证选择器族和前缀长度，当AF_UNSPEC选择器带有超大前缀长度（如128）与IPv4流匹配时，可能导致移位越界，造成拒绝服务或系统崩溃。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 8df5cd51fd70c33aa1776e5cbcd82b0a86649d73 ~ 87a5bbccc7ff4edb3f42fea387124237d2ba91ee -
LinuxLinux 6.12 -

II. Public POCs for CVE-2026-72450

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III. Intelligence Information for CVE-2026-72450

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Patches & Fixes for CVE-2026-72450 (8)

Same Patch Batch · Linux · 2026-08-15 · 846 CVEs total

CVE-2026-7428010.0 CRITICALcrypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-7427910.0 CRITICALcrypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-7240710.0 CRITICALgeneve: validate inner network offset in geneve_gro_complete()
CVE-2026-7240810.0 CRITICALgeneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-7430910.0 CRITICALvdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-7447510.0 CRITICALvxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-7242110.0 CRITICALipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-724939.9 CRITICALnet: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-724639.8 CRITICALxfrm: Fix dev use-after-free in xfrm async resumption
CVE-2026-722489.8 CRITICALnetfilter: flowtable: support IPIP tunnel with direct xmit
CVE-2026-723819.8 CRITICALksmbd: fix use-after-free of fp->owner.name in durable handle owner check
CVE-2026-724779.8 CRITICALfs/ntfs3: call _ntfs_bad_inode() when failing to rename
CVE-2026-724739.8 CRITICALxprtrdma: Decouple req recycling from RPC completion
CVE-2026-724729.8 CRITICALnfs: use nfsi->rwsem to protect traversal of the file lock list
CVE-2026-744069.8 CRITICALvxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().
CVE-2026-722229.8 CRITICALsunrpc: pin svc_xprt across the asynchronous TLS handshake callback
CVE-2026-721379.8 CRITICALxfrm: nat_keepalive: avoid double free on send error
CVE-2026-743769.8 CRITICALmd/raid10: reset read_slot when reusing r10bio for discard
CVE-2026-722269.8 CRITICALbatman-adv: tt: prevent TVLV OOB check overflow
CVE-2026-722349.8 CRITICALbatman-adv: access unicast_ttvn skb->data only after skb realloc

Showing top 20 of 846 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-72450

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