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CVE-2026-74279— crypto: cavium/cpt - fix DMA cleanup using wrong loop index

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 4.11版本存在安全漏洞，该漏洞源于DMA清理时使用了错误的循环索引，导致内存泄漏和重复取消映射。

CVSS 10.0 · Critical EPSS 0.52% · P42

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c694b233295b99c33dd5ac28aede9f171f5a6862< 23c6174e48f66fc10b998b0acdb406cb0caf5c80 affected
c694b233295b99c33dd5ac28aede9f171f5a6862< 23d3a7e896a1fe2d7a6bcb42f093948b79f8a198 affected
c694b233295b99c33dd5ac28aede9f171f5a6862< 28141f95ae93b18f9bfde953cb787fcb151fb9da affected
c694b233295b99c33dd5ac28aede9f171f5a6862< 8afd1007ef79898a6e010eaade97097e49405fce affected
c694b233295b99c33dd5ac28aede9f171f5a6862< 3b8a1e1f4e4071a62b20374028744e8cc8310d48 affected
c694b233295b99c33dd5ac28aede9f171f5a6862< fb4d57b83356d4bd411b45ede3024e0ff42c9b5e affected
c694b233295b99c33dd5ac28aede9f171f5a6862< d319b83b97b3585550d9ae592dfa78c755b6129e affected
c694b233295b99c33dd5ac28aede9f171f5a6862< 9dbf173bd32d5f81b005008b682bfb50aa093455 affected
… +10 more rows
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I. Basic Information for CVE-2026-74279

Vulnerability Information
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Vulnerability Title
crypto: cavium/cpt - fix DMA cleanup using wrong loop index
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: crypto: cavium/cpt - fix DMA cleanup using wrong loop index The sg_cleanup error path used list[i] instead of list[j] when unmapping DMA buffers, leaking successfully mapped entries and repeatedly unmapping the failed one.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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 4.11版本存在安全漏洞，该漏洞源于DMA清理时使用了错误的循环索引，导致内存泄漏和重复取消映射。
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 c694b233295b99c33dd5ac28aede9f171f5a6862 ~ 23c6174e48f66fc10b998b0acdb406cb0caf5c80 -
Linux Linux 4.11 -

II. Public POCs for CVE-2026-74279

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III. Intelligence Information for CVE-2026-74279

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Patches & Fixes for CVE-2026-74279 (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-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
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-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72208 9.8 CRITICAL ntfs: add bounds check before accessing EA entries
CVE-2026-72210 9.8 CRITICAL ntfs: fix off-by-one in mapping pairs decoding bounds checks
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72299 9.8 CRITICAL tipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-74434 9.8 CRITICAL rxrpc: Don't move a peeked OOB message onto the pending queue
CVE-2026-74433 9.8 CRITICAL rxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-72473 9.8 CRITICAL xprtrdma: Decouple req recycling from RPC completion
CVE-2026-72472 9.8 CRITICAL nfs: use nfsi->rwsem to protect traversal of the file lock list
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
CVE-2026-72466 9.8 CRITICAL xprtrdma: Fix bcall rep leak and unbounded peek
CVE-2026-72206 9.8 CRITICAL ntfs: validate index block header more strictly
CVE-2026-72322 9.8 CRITICAL ipv6: mcast: Fix potential UAF in MLD delayed work

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-2026-74279

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