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CVE-2026-80732— ata: pata_sl82c105: fix bridge revision use-after-free

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，该漏洞源于在读取PCI桥接设备的revision字段前释放了设备引用，可能导致释放后重用。

CVSS 7.8 · High EPSS 0.16% · P6

Possible ATT&CK Techniques 1 AI

T1201.003

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 44c10138fd4bbc4b6d6bff0873c24902f2a9da65< 1268ca9418e2217f2b60705cf4a280b689b26678 affected
44c10138fd4bbc4b6d6bff0873c24902f2a9da65< a626dfca96041842053cf2d1efceb436c4cd8dcf affected
44c10138fd4bbc4b6d6bff0873c24902f2a9da65< 5ef87b1b4656d675440ceab32a56e69ad958d3a1 affected
44c10138fd4bbc4b6d6bff0873c24902f2a9da65< fa0dca89b4fb0909ffda7b9ab6051af33270f95e affected
44c10138fd4bbc4b6d6bff0873c24902f2a9da65< dc711fb137b33c12e6ca22b6a9c9b9f21d49e4de affected
44c10138fd4bbc4b6d6bff0873c24902f2a9da65< a837deeaa37cc3f0e8c4e5c096787047f272c956 affected
44c10138fd4bbc4b6d6bff0873c24902f2a9da65< 56fd78c8c820f527f8003e379ab71004b2e79a44 affected
44c10138fd4bbc4b6d6bff0873c24902f2a9da65< 7700a31039cdc6715cb6cce7e7a664ee4e945f67 affected
… +10 more rows
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I. Basic Information for CVE-2026-80732

Vulnerability Information
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Vulnerability Title
ata: pata_sl82c105: fix bridge revision use-after-free
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ata: pata_sl82c105: fix bridge revision use-after-free pci_get_slot() returns a referenced PCI device. Commit 44c10138fd4b ("PCI: Change all drivers to use pci_device->revision") replaced a configuration-space read with direct access to the cached revision field, but left that access after pci_dev_put(). The bridge may therefore be freed before its revision is read. Read the revision before dropping the reference.
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，该漏洞源于在读取PCI桥接设备的revision字段前释放了设备引用，可能导致释放后重用。
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 44c10138fd4bbc4b6d6bff0873c24902f2a9da65 ~ 1268ca9418e2217f2b60705cf4a280b689b26678 -
Linux Linux 2.6.23 -

II. Public POCs for CVE-2026-80732

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III. Intelligence Information for CVE-2026-80732

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Patches & Fixes for CVE-2026-80732 (4)

Vendor Advisories for CVE-2026-80732 (1)

Other References for CVE-2026-80732 (3)

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-2026-80745 8.4 HIGH regulator: fp9931: Fix VPOS/VNEG voltage selector table
CVE-2026-80750 8.4 HIGH pmdomain: mediatek: fix remaining %pOF after of_node_put()
CVE-2026-80752 8.4 HIGH Input: psxpad-spi - set driver data before use
CVE-2026-80753 8.4 HIGH ovpn: run deferred work on a module-owned workqueue
CVE-2026-80747 8.0 HIGH drm/amdkfd: Add bounds check for CRAT subtype length
CVE-2026-80751 7.8 HIGH pmdomain: mediatek: mfg: initialize prev_o in mtk_mfg_attach_dev()
CVE-2026-80754 7.8 HIGH Input: synaptics-rmi4 - fix F55 transmitter electrode count typo
CVE-2026-80748 7.8 HIGH mmc: loongson2: Fix sg iteration in data reorder functions
CVE-2026-80736 7.8 HIGH thunderbolt: Fix bandwidth group reservation indexing
CVE-2026-80737 7.8 HIGH serial: amba-pl011: synchronize DMA teardown
CVE-2026-80731 7.8 HIGH net: remove CAP_SYS_RAWIO zero-padding in dev_validate_header
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-2026-80741 7.1 HIGH drm/log: Fix out-of-bounds read on empty message length
CVE-2026-80749 7.1 HIGH drm/connector/hdmi: Fix out of bounds memory read
CVE-2026-80730 ring-buffer: Fix crash passing ERR_PTR to kthread_stop()
CVE-2026-80733 net: remove WARN_ON_ONCE() from sk_mc_loop()
CVE-2026-80727 x86/mce: Set up the polling timer before CMCI discovery

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-2026-80732

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