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CVE-2026-80737— serial: amba-pl011: synchronize DMA 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存在安全漏洞，该漏洞源于amba-pl011串行驱动中的DMA拆除同步缺陷，dmaengine_terminate_all()未等待正在运行的回调，导致TX回调在TX缓冲区释放后仍可访问该缓冲区，且RX轮询定时器在未持有端口锁时读取RX缓冲区，可能导致释放后重用和竞争条件。

CVSS 7.8 · High EPSS 0.16% · P6

Possible ATT&CK Techniques 1 AI

T1502.001

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux ead76f329f777c7301e0a5456a0a1c7a081570bd< a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e affected
ead76f329f777c7301e0a5456a0a1c7a081570bd< 44bd0ecc3444882d08ecfbc2b2418d2f463d3186 affected
ead76f329f777c7301e0a5456a0a1c7a081570bd< f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03 affected
ead76f329f777c7301e0a5456a0a1c7a081570bd< c8c8e895f65fbf71ea6224e27cf8dab91b776e0d affected
ead76f329f777c7301e0a5456a0a1c7a081570bd< 9f6989e477f03a4721d34bb4b09b17accd40283e affected
ead76f329f777c7301e0a5456a0a1c7a081570bd< 5974cb66681eac367107b05924744d7e3b49d41c affected
ead76f329f777c7301e0a5456a0a1c7a081570bd< fdfb46c387241b4eddd36d746793764413285913 affected
ead76f329f777c7301e0a5456a0a1c7a081570bd< 440915499231e9db1c361aa45bb702e8fd3b4a32 affected
… +10 more rows
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I. Basic Information for CVE-2026-80737

Vulnerability Information
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Vulnerability Title
serial: amba-pl011: synchronize DMA teardown
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: serial: amba-pl011: synchronize DMA teardown dmaengine_terminate_all() does not wait for a running callback, so the TX callback can still touch the TX buffer after it is freed. The RX poll timer reads the RX buffers without the port lock. Switch to dmaengine_terminate_sync() and delete the RX timer before freeing the buffers.
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amba-pl011串行驱动中的DMA拆除同步缺陷，dmaengine_terminate_all()未等待正在运行的回调，导致TX回调在TX缓冲区释放后仍可访问该缓冲区，且RX轮询定时器在未持有端口锁时读取RX缓冲区，可能导致释放后重用和竞争条件。
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 ead76f329f777c7301e0a5456a0a1c7a081570bd ~ a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e -
Linux Linux 2.6.39 -

II. Public POCs for CVE-2026-80737

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III. Intelligence Information for CVE-2026-80737

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Patches & Fixes for CVE-2026-80737 (7)

Vendor Advisories for CVE-2026-80737 (1)

Same Patch Batch · Linux · 2026-09-03 · 32 CVEs total

CVE-2026-80726 9.3 CRITICAL KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page
CVE-2026-80734 8.8 HIGH btrfs: initialize inode mapping flags for cached inodes
CVE-2026-80753 8.4 HIGH ovpn: run deferred work on a module-owned workqueue
CVE-2026-80752 8.4 HIGH Input: psxpad-spi - set driver data before use
CVE-2026-80750 8.4 HIGH pmdomain: mediatek: fix remaining %pOF after of_node_put()
CVE-2026-80745 8.4 HIGH regulator: fp9931: Fix VPOS/VNEG voltage selector table
CVE-2026-80747 8.0 HIGH drm/amdkfd: Add bounds check for CRAT subtype length
CVE-2026-80754 7.8 HIGH Input: synaptics-rmi4 - fix F55 transmitter electrode count typo
CVE-2026-80732 7.8 HIGH ata: pata_sl82c105: fix bridge revision use-after-free
CVE-2026-80731 7.8 HIGH net: remove CAP_SYS_RAWIO zero-padding in dev_validate_header
CVE-2026-80736 7.8 HIGH thunderbolt: Fix bandwidth group reservation indexing
CVE-2026-80748 7.8 HIGH mmc: loongson2: Fix sg iteration in data reorder functions
CVE-2026-80751 7.8 HIGH pmdomain: mediatek: mfg: initialize prev_o in mtk_mfg_attach_dev()
CVE-2026-80735 7.3 HIGH ovpn: ensure socket is owned by ovpn before deref sk_user_data
CVE-2026-80738 7.3 HIGH bpf: Check sk_state before sk_protocol in bpf_tcp_*_syncookie
CVE-2026-80749 7.1 HIGH drm/connector/hdmi: Fix out of bounds memory read
CVE-2026-80741 7.1 HIGH drm/log: Fix out-of-bounds read on empty message length
CVE-2026-80727 x86/mce: Set up the polling timer before CMCI discovery
CVE-2026-80742 af_packet: Don't send zero-byte data in tpacket_snd().
CVE-2026-80733 net: remove WARN_ON_ONCE() from sk_mc_loop()

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80737

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