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CVE-2026-72149— dmaengine: tegra: Fix burst size calculation

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 5.19版本存在安全漏洞，该漏洞源于Tegra GPC DMA硬件突发大小计算不当，当传输长度不是配置的最大突发大小的整数倍时，DMA挂起，可能导致拒绝服务。

CVSS 7.5 · High EPSS 0.65% · P48

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux ee17028009d49fffed8cc963455d33b1fd3f1d08< 735951baa311c66353405dcac39375dd66441db0 affected
ee17028009d49fffed8cc963455d33b1fd3f1d08< 8f0f5de1091119679d87f60dfb1acbff4b2a0ed3 affected
ee17028009d49fffed8cc963455d33b1fd3f1d08< a3b76b54e06d73166af4d1a284a0e0711889060c affected
ee17028009d49fffed8cc963455d33b1fd3f1d08< 7926c1e4be86379945fb5f168888ac4d2aaf6c91 affected
ee17028009d49fffed8cc963455d33b1fd3f1d08< 6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1 affected
ee17028009d49fffed8cc963455d33b1fd3f1d08< 4651df83b6c796daead3447e8fd874322918ee4f affected
5.19 affected
< 5.19 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-72149

Vulnerability Information
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Vulnerability Title
dmaengine: tegra: Fix burst size calculation
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: tegra: Fix burst size calculation Currently, the Tegra GPC DMA hardware requires the transfer length to be a multiple of the max burst size configured for the channel. When a client requests a transfer where the length is not evenly divisible by the configured max burst size, the DMA hangs with partial burst at the end. Fix this by reducing the burst size to the largest power-of-2 value that evenly divides the transfer length. For example, a 40-byte transfer with a 16-byte max burst will now use an 8-byte burst (40 / 8 = 5 complete bursts) instead of causing a hang. This issue was observed with the PL011 UART driver where TX DMA transfers of arbitrary lengths were stuck.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 5.19版本存在安全漏洞，该漏洞源于Tegra GPC DMA硬件突发大小计算不当，当传输长度不是配置的最大突发大小的整数倍时，DMA挂起，可能导致拒绝服务。
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 ee17028009d49fffed8cc963455d33b1fd3f1d08 ~ 735951baa311c66353405dcac39375dd66441db0 -
Linux Linux 5.19 -

II. Public POCs for CVE-2026-72149

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III. Intelligence Information for CVE-2026-72149

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Patches & Fixes for CVE-2026-72149 (6)

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-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
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-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72381 9.8 CRITICAL ksmbd: fix use-after-free of fp->owner.name in durable handle owner check
CVE-2026-72393 9.8 CRITICAL eth: fbnic: don't cache shinfo across skb realloc
CVE-2026-74401 9.8 CRITICAL dlm: fix add msg handle in send_queue ordered
CVE-2026-74406 9.8 CRITICAL vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().
CVE-2026-72355 9.8 CRITICAL netfs: Fix barriering when walking subrequest list
CVE-2026-72339 9.8 CRITICAL qede: fix off-by-one in BD ring consumption on build_skb failure
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72194 9.8 CRITICAL fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow
CVE-2026-72351 9.8 CRITICAL gue: validate REMCSUM private option length
CVE-2026-72366 9.8 CRITICAL netfs: Fix netfs_create_write_req() to handle async cache object creation
CVE-2026-72098 9.8 CRITICAL dm-verity: fix buffer overflow in FEC calculation
CVE-2026-72083 9.8 CRITICAL scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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