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CVE-2026-72041— espintcp: use sk_msg_free_partial to fix partial send

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基金会开源的一个操作系统内核。 Linux kernel 5.6版本存在安全漏洞，该漏洞源于espintcp在部分发送时未正确维护skmsg一致性，可能导致skmsg记账错误。

CVSS 9.8 · Critical EPSS 0.63% · P47

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux e27cca96cd68fa2c6814c90f9a1cfd36bb68c593< 518dcb84b997dff461800b079e5f2596389f766a affected
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593< 4ea8c051b4bd7feec7749a980f2f70e1782b84d7 affected
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593< a977f78adce40b39d90d9567e7987bb110102810 affected
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593< 54d73f18f8919735f4d04d6f43374f75756c0180 affected
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593< 14c0b42c8a2cd9b5361bbff45b52f69c62c6a286 affected
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593< a66d45e0ce6d73cd79962d422388e61bfaf0cb50 affected
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593< a338ce41bc933d8f74c39d9b3b6f1d8ca53d9714 affected
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593< 007800408002d871f5699bdb944f985896730b8f affected
… +10 more rows
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I. Basic Information for CVE-2026-72041

Vulnerability Information
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Vulnerability Title
espintcp: use sk_msg_free_partial to fix partial send
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: espintcp: use sk_msg_free_partial to fix partial send sk_msg_free_partial() ensures consistency of the skmsg at every iteration, without having to manually handle uncharges and offsets. This simplifies the code, and fixes some bugs in skmsg accounting when we don't send the full contents.
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基金会开源的一个操作系统内核。 Linux kernel 5.6版本存在安全漏洞，该漏洞源于espintcp在部分发送时未正确维护skmsg一致性，可能导致skmsg记账错误。
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 e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 ~ 518dcb84b997dff461800b079e5f2596389f766a -
Linux Linux 5.6 -

II. Public POCs for CVE-2026-72041

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III. Intelligence Information for CVE-2026-72041

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Patches & Fixes for CVE-2026-72041 (7)

Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total

CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-74433 9.8 CRITICAL rxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-72208 9.8 CRITICAL ntfs: add bounds check before accessing EA entries
CVE-2026-72065 9.8 CRITICAL net: mana: Validate the packet length reported by the NIC
CVE-2026-72064 9.8 CRITICAL net: mana: Sync page pool RX frags for CPU
CVE-2026-72317 9.8 CRITICAL SUNRPC: pin upper rpc_clnt across the TLS connect_worker
CVE-2026-74427 9.8 CRITICAL afs: Fix netns teardown to cancel the preallocation charger
CVE-2026-72137 9.8 CRITICAL xfrm: nat_keepalive: avoid double free on send error
CVE-2026-72429 9.8 CRITICAL ipv6: ioam: fix type confusion of dst_entry
CVE-2026-74428 9.8 CRITICAL rxrpc: Fix double unlock in rxrpc_recvmsg()
CVE-2026-72139 9.8 CRITICAL tcp: defer md5sig_info kfree past RCU grace period in tcp_connect
CVE-2026-74545 9.8 CRITICAL rtase: fix double free of multi-frag skb on DMA map failure
CVE-2026-72046 9.8 CRITICAL gve: fix header buffer corruption with header-split and HW-GRO

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-72041

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