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CVE-2026-89887— media: i2c: ov7740: fix use-after-destroy in remove

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 内核中修复了以下漏洞： media: i2c: ov7740: 修复移除操作中的“使用已销毁对象”（use-after-destroy）问题 在 函数中存在一个严重的资源释放顺序错误：该函数在释放依赖该互斥锁的 V4L2 控制句柄之前，就先销毁了驱动的互斥锁，从而导致了“使用已销毁对象”的内核恐慌（kernel panic）。此外，驱动代码依次显式调用了 和 ，但随后又调用了 函数，该函数内部再次调用了这两个函数，从而导致了双重释放（double-free）问题。 本补丁通过首先注销子设备（unregi

CVSS 7.8 · High EPSS 0.18% · P7

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 39c5c4471b8d793daf868bd004e56ed420e89707< 9e4693436c7dcf8584002500ce4b434b79bbf9ed affected
39c5c4471b8d793daf868bd004e56ed420e89707< 81e9765878d3ac8ad18e3a683332b5d6bc3a0e33 affected
39c5c4471b8d793daf868bd004e56ed420e89707< 8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5e affected
39c5c4471b8d793daf868bd004e56ed420e89707< 7512838a19af0a284a58435292243fad21e57ff1 affected
39c5c4471b8d793daf868bd004e56ed420e89707< 25e2505866c577db2661e4d431f0907c6ec9a3b4 affected
39c5c4471b8d793daf868bd004e56ed420e89707< af81f35e4f429e769b784754e1aa4d7a922470ac affected
39c5c4471b8d793daf868bd004e56ed420e89707< 09453b467990e8ef8fe09f45a685f9a625248d33 affected
39c5c4471b8d793daf868bd004e56ed420e89707< 5d1b3dea5a44124bab6c14a2d71b977dabed54e7 affected
… +10 more rows
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I. Basic Information for CVE-2026-89887

Vulnerability Information
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Vulnerability Title
media: i2c: ov7740: fix use-after-destroy in remove
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: i2c: ov7740: fix use-after-destroy in remove The ov7740_remove() function had a severe teardown order bug where it destroyed the driver's mutex before freeing the V4L2 control handler which relies on that mutex, leading to a use-after-destroy kernel panic. Furthermore, the driver explicitly called v4l2_ctrl_handler_free() and mutex_destroy() sequentially, but then called ov7740_free_controls() which invokes both of them a second time, resulting in a double-free. This patch fixes the issue by unregistering the subdevice first, and relying exclusively on ov7740_free_controls() to safely tear down the mutex and control handler in the correct order.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 39c5c4471b8d793daf868bd004e56ed420e89707 ~ 9e4693436c7dcf8584002500ce4b434b79bbf9ed -
Linux Linux 4.16 -

II. Public POCs for CVE-2026-89887

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III. Intelligence Information for CVE-2026-89887

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Other References for CVE-2026-89887 (8)

Same Patch Batch · Linux · 2026-09-16 · 276 CVEs total

CVE-2026-90048 9.8 CRITICAL fs/ntfs3: fix slab-out-of-bounds write in ni_create_attr_list()
CVE-2026-90012 9.8 CRITICAL spi: Fix DMA mapping ownership on partial map failure
CVE-2026-89970 9.8 CRITICAL nvmet-auth: Synchronize timeout work during SQ teardown
CVE-2026-89857 9.8 CRITICAL scsi: qla2xxx: Hold qpair lock when sending NVMe LS reject
CVE-2026-89969 9.8 CRITICAL nvmet-tcp: fix out-of-bounds write when receiving an over-long PDU
CVE-2026-89847 9.8 CRITICAL scsi: qla2xxx: Avoid double completion in async IOCB timeout
CVE-2026-89972 9.8 CRITICAL nvme: add missing SRCU grace period in error path
CVE-2026-89990 9.8 CRITICAL ceph: lock mutex in ceph_mds_check_access()
CVE-2026-90036 9.8 CRITICAL NFSD: Prevent client use-after-free during blocked-lock reaping
CVE-2026-90038 9.8 CRITICAL NFSD: Prevent client use-after-free during export state revocation
CVE-2026-90037 9.8 CRITICAL NFSD: Prevent client use-after-free during close_lru reaping
CVE-2026-89788 9.8 CRITICAL ksmbd: fix tree connection use-after-free in smb2_tree_connect()
CVE-2026-89783 9.8 CRITICAL xfrm6: fix out-of-bounds write in xfrm6_input_addr() when secpath is full
CVE-2026-90042 9.8 CRITICAL ceph: properly decrypt filenames in vmalloc() buffers
CVE-2026-89778 9.8 CRITICAL isofs: fix out-of-bounds page array access on empty zisofs block
CVE-2026-89915 9.3 CRITICAL KVM: arm64: Remove VM-wide VNCR mapping counter
CVE-2026-90049 9.3 CRITICAL net: skbuff: don't skb_tx_error() the source skb in skb_zerocopy()
CVE-2026-89775 9.3 CRITICAL KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation
CVE-2026-89916 9.3 CRITICAL KVM: arm64: Make VNCR invalidation participate in MMU invalidation retry
CVE-2026-89930 9.3 CRITICAL KVM: nVMX: Service local TLB flushes on failed nested VM-Enter

Showing top 20 of 276 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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