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CVE-2026-80737

serial: amba-pl011: synchronize DMA teardown

HIGH
7.8
CVSS Score
Published: September 3, 2026 at 08:21 AM UTC
Updated: October 16, 2026 at 08:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
2.6.39ead76f329f777c7301e0a5456a0a1c7a081570bd
Vendor states this is fixed in 440915499231e9db1c361aa45bb702e8fd3b4a32 (fixed)
Vendor states this is fixed in 44bd0ecc3444882d08ecfbc2b2418d2f463d3186 (fixed)
Vendor states this is fixed in 5974cb66681eac367107b05924744d7e3b49d41c (fixed)
Vendor states this is fixed in 9f6989e477f03a4721d34bb4b09b17accd40283e (fixed)
Vendor states this is fixed in a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e (fixed)
Vendor states this is fixed in c8c8e895f65fbf71ea6224e27cf8dab91b776e0d (fixed)
Vendor states this is fixed in f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03 (fixed)
Vendor states this is fixed in fdfb46c387241b4eddd36d746793764413285913 (fixed)
Vendor states this is fixed in 2.6.39 (unaffected)
Vendor states this is fixed in 5.10.267 (unaffected)
Vendor states this is fixed in 5.15.218 (unaffected)
Vendor states this is fixed in 6.1.185 (unaffected)
Vendor states this is fixed in 6.12.106 (unaffected)
Vendor states this is fixed in 6.18.45 (unaffected)
Vendor states this is fixed in 6.6.154 (unaffected)
Vendor states this is fixed in 7.1.9 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (8)

Source: cverecord
https://git.kernel.org/stable/c/a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e
Source: cverecord
https://git.kernel.org/stable/c/44bd0ecc3444882d08ecfbc2b2418d2f463d3186
Source: cverecord
https://git.kernel.org/stable/c/f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03
Source: cverecord
https://git.kernel.org/stable/c/c8c8e895f65fbf71ea6224e27cf8dab91b776e0d
Source: cverecord
https://git.kernel.org/stable/c/9f6989e477f03a4721d34bb4b09b17accd40283e
Source: cverecord
https://git.kernel.org/stable/c/5974cb66681eac367107b05924744d7e3b49d41c
Source: cverecord
https://git.kernel.org/stable/c/fdfb46c387241b4eddd36d746793764413285913
Source: cverecord
https://git.kernel.org/stable/c/440915499231e9db1c361aa45bb702e8fd3b4a32

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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