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CVE-2026-72448— octeontx2-pf: Fix leak of SQ timestamp buffer on teardown

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 5.10版本存在安全漏洞，该漏洞源于otx2_free_sq_res()未释放sq->timestamps缓冲区，可能导致内存泄漏。

AI Predicted 4.7 Difficulty: Moderate EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c9c12d339d93366732112d7ff472958834bfc3c5< c642a530aaaeb9a3e356cedfe77955e7f983380e affected
c9c12d339d93366732112d7ff472958834bfc3c5< e68ada66afcae0bc2a7c06b43c5a9a081d29e7b4 affected
c9c12d339d93366732112d7ff472958834bfc3c5< d6c0b0c802d3c49b86cad665a7f3790dc55a0394 affected
c9c12d339d93366732112d7ff472958834bfc3c5< 19d2d36e193c3fb515c052a56bfc83d8ac7b6764 affected
c9c12d339d93366732112d7ff472958834bfc3c5< e8e9dff204e8d8553495893e1a44d2b5021648de affected
c9c12d339d93366732112d7ff472958834bfc3c5< 3d45d40b872aec0073d4cf08956a6c9b87c5e396 affected
c9c12d339d93366732112d7ff472958834bfc3c5< 452ec5058ea4ed63adae8d6beeac9ee687fe8061 affected
c9c12d339d93366732112d7ff472958834bfc3c5< a056db30de92945ff8ee6033096678bfbae878e3 affected
… +10 more rows
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I. Basic Information for CVE-2026-72448

Vulnerability Information
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Vulnerability Title
octeontx2-pf: Fix leak of SQ timestamp buffer on teardown
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: Fix leak of SQ timestamp buffer on teardown The send-queue timestamp ring is allocated with qmem_alloc() when timestamping is used, but otx2_free_sq_res() never freed sq->timestamps, leaking that memory across ifdown and device removal. Add the missing qmem_free() alongside the other SQ companion buffers.
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基金会开源的一个操作系统内核。 Linux kernel 5.10版本存在安全漏洞，该漏洞源于otx2_free_sq_res()未释放sq->timestamps缓冲区，可能导致内存泄漏。
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 c9c12d339d93366732112d7ff472958834bfc3c5 ~ c642a530aaaeb9a3e356cedfe77955e7f983380e -
Linux Linux 5.10 -

II. Public POCs for CVE-2026-72448

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III. Intelligence Information for CVE-2026-72448

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Patches & Fixes for CVE-2026-72448 (8)

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-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
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-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72463 9.8 CRITICAL xfrm: Fix dev use-after-free in xfrm async resumption
CVE-2026-72248 9.8 CRITICAL netfilter: flowtable: support IPIP tunnel with direct xmit
CVE-2026-72381 9.8 CRITICAL ksmbd: fix use-after-free of fp->owner.name in durable handle owner check
CVE-2026-72477 9.8 CRITICAL fs/ntfs3: call _ntfs_bad_inode() when failing to rename
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-2026-74406 9.8 CRITICAL vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().
CVE-2026-72222 9.8 CRITICAL sunrpc: pin svc_xprt across the asynchronous TLS handshake callback
CVE-2026-74401 9.8 CRITICAL dlm: fix add msg handle in send_queue ordered
CVE-2026-72137 9.8 CRITICAL xfrm: nat_keepalive: avoid double free on send error
CVE-2026-74376 9.8 CRITICAL md/raid10: reset read_slot when reusing r10bio for discard
CVE-2026-72130 9.8 CRITICAL nvmet-auth: reject short AUTH_RECEIVE buffers

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-2026-72448

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