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CVE-2026-74461— i2c: imx: Cancel hrtimer before clearing slave pointer

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 5.11版本存在安全漏洞，该漏洞源于在清除slave指针前未取消hrtimer，可能导致释放后重用或空指针取消引用。

CVSS 8.4 · High EPSS 0.14% · P4

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux f7414cd6923fd7f78e57086fc964ba2dc25db5c1< e3da77bdb4015051656bb472c295656bbea03b6f affected
f7414cd6923fd7f78e57086fc964ba2dc25db5c1< 470fe15fb3bb2eba6629be301ca7e991ee3cfb7e affected
f7414cd6923fd7f78e57086fc964ba2dc25db5c1< a8a1f9ac3d763e721586f15479ef9140b216ddf3 affected
f7414cd6923fd7f78e57086fc964ba2dc25db5c1< 753060f2b77ff2f386addbd3ecadb95b9f90cddd affected
f7414cd6923fd7f78e57086fc964ba2dc25db5c1< affd62f5719a78135b7441aa49c8cab3c3b5e838 affected
f7414cd6923fd7f78e57086fc964ba2dc25db5c1< dab4762ee7f3fd0a01980d5407ba48d0261d3bff affected
f7414cd6923fd7f78e57086fc964ba2dc25db5c1< 6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f affected
5.11 affected
… +8 more rows
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I. Basic Information for CVE-2026-74461

Vulnerability Information
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Vulnerability Title
i2c: imx: Cancel hrtimer before clearing slave pointer
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: i2c: imx: Cancel hrtimer before clearing slave pointer In i2c_imx_unreg_slave(), the slave pointer is set to NULL after disabling interrupts. However, a pending interrupt might already have started the hrtimer (i2c_imx_slave_timeout) before the pointer was cleared. If the hrtimer fires after i2c_imx->slave is set to NULL, the timer callback i2c_imx_slave_finish_op() will call i2c_imx_slave_event() with a NULL slave pointer, which results in a use-after-free / NULL pointer dereference. Fix by canceling the hrtimer and waiting for it to complete after disabling interrupts, before clearing the slave pointer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/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 5.11版本存在安全漏洞，该漏洞源于在清除slave指针前未取消hrtimer，可能导致释放后重用或空指针取消引用。
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 f7414cd6923fd7f78e57086fc964ba2dc25db5c1 ~ e3da77bdb4015051656bb472c295656bbea03b6f -
Linux Linux 5.11 -

II. Public POCs for CVE-2026-74461

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III. Intelligence Information for CVE-2026-74461

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Patches & Fixes for CVE-2026-74461 (5)

Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total

CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72041 9.8 CRITICAL espintcp: use sk_msg_free_partial to fix partial send
CVE-2026-72477 9.8 CRITICAL fs/ntfs3: call _ntfs_bad_inode() when failing to rename
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72209 9.8 CRITICAL ntfs: validate attribute values on lookup
CVE-2026-72208 9.8 CRITICAL ntfs: add bounds check before accessing EA entries
CVE-2026-72299 9.8 CRITICAL tipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-74434 9.8 CRITICAL rxrpc: Don't move a peeked OOB message onto the pending queue
CVE-2026-74433 9.8 CRITICAL rxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-72473 9.8 CRITICAL xprtrdma: Decouple req recycling from RPC completion
CVE-2026-72472 9.8 CRITICAL nfs: use nfsi->rwsem to protect traversal of the file lock list
CVE-2026-74545 9.8 CRITICAL rtase: fix double free of multi-frag skb on DMA map failure
CVE-2026-72322 9.8 CRITICAL ipv6: mcast: Fix potential UAF in MLD delayed work

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-74461

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