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CVE-2026-93236— media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common

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.

在 Linux 内核中，以下漏洞已得到修复： media: meson: vdec: 修复 vdec_try_fmt_common 中的空指针解引用问题 当在 OUTPUT 队列上调用 VIDIOC_TRY_FMT 并传入不支持的像素格式时，vdec_try_fmt_common() 会回退到使用 V4L2_PIX_FMT_MPEG2。然而，如果某个发行版因 MPEG2 支持长期存在问题而本地移除了该支持，则平台格式表中将不包含 MPEG2 格式，导致 find_format() 返回 NULL。随后对 fmt_o

AI Predicted 5.5 Difficulty: Easy EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 3e7f51bd96077acad6acd7b45668f65b44233c4e< 276f28672bb6d5d5feca78db4219c7b5adf1be26 affected
3e7f51bd96077acad6acd7b45668f65b44233c4e< c620906fb1b2ad75d408ea9d06040d66952d4a31 affected
3e7f51bd96077acad6acd7b45668f65b44233c4e< 3839b6be2279fc4f558723f2c0fbfc9c42070958 affected
3e7f51bd96077acad6acd7b45668f65b44233c4e< 680a89683197cdfe4e03e6fd7755454c647d39c1 affected
3e7f51bd96077acad6acd7b45668f65b44233c4e< f2375a308640e401c142c5426d52c3d10e016d25 affected
3e7f51bd96077acad6acd7b45668f65b44233c4e< 96dafbae77f50bfe2228bcfedcd8652c5e5f08e8 affected
3e7f51bd96077acad6acd7b45668f65b44233c4e< d61ba609c3226af3c84268ba606ea06ee63e511b affected
3e7f51bd96077acad6acd7b45668f65b44233c4e< 20aa934ace6917262ff579a73ec018d06a7bad1c affected
… +10 more rows
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I. Basic Information for CVE-2026-93236

Vulnerability Information
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Vulnerability Title
media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: meson: vdec: fix NULL pointer deref in vdec_try_fmt_common When VIDIOC_TRY_FMT is called with an unsupported pixel format on the OUTPUT queue, vdec_try_fmt_common() falls back to V4L2_PIX_FMT_MPEG2. However, if a distro has locally patched MPEG2 support out (as it has been broken for some time) the platform format table does not contain MPEG2 so find_format() returns NULL and the subsequent dereference of fmt_out->max_width triggers a NULL pointer dereference. Fix this by falling back to the first format in the platform's format array instead of hardcoding V4L2_PIX_FMT_MPEG2. This is always valid since every platform defines at least one format.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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 3e7f51bd96077acad6acd7b45668f65b44233c4e ~ 276f28672bb6d5d5feca78db4219c7b5adf1be26 -
Linux Linux 5.3 -

II. Public POCs for CVE-2026-93236

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III. Intelligence Information for CVE-2026-93236

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Patches & Fixes for CVE-2026-93236 (8)

Same Patch Batch · Linux · 2026-09-24 · 234 CVEs total

CVE-2026-93207 9.8 CRITICAL SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry
CVE-2026-97413 9.8 CRITICAL RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
CVE-2026-93228 9.1 CRITICAL svcrdma: Reject Write/Reply chunks with segcount 0
CVE-2026-93793 8.8 HIGH wifi: iwlwifi: mvm: validate TX_CMD response layout
CVE-2026-93799 8.8 HIGH wifi: iwlwifi: mvm: validate sta_id in BA window status notif
CVE-2026-93790 8.8 HIGH wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
CVE-2026-93806 8.8 HIGH wifi: cfg80211: validate assoc response length before status and IE access
CVE-2026-97442 8.8 HIGH wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
CVE-2026-97509 8.8 HIGH thunderbolt: Keep XDomain reference during the lifetime of a service
CVE-2026-97409 8.8 HIGH nvme-fc: Do not cancel requests in io target before it is initialized
CVE-2026-93280 8.8 HIGH greybus: audio: bound the topology section sizes against the fetched size
CVE-2026-93284 8.8 HIGH drm/pagemap: dma-unmap pages before handling migration errors
CVE-2026-97451 8.4 HIGH ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
CVE-2026-97452 8.4 HIGH ACPICA: Prevent adding invalid references
CVE-2026-97455 8.4 HIGH ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
CVE-2026-97450 8.4 HIGH ACPICA: validate handler object type in two places
CVE-2026-93827 8.4 HIGH virtio-fs: avoid double-free on failed queue setup
CVE-2026-97433 8.2 HIGH nvme: validate FDP configuration descriptor sizes
CVE-2026-93221 8.1 HIGH nfsd: convert nfsd_net boolean flags to unsigned long flags word
CVE-2026-93786 8.1 HIGH ksmbd: preserve VFS inherited POSIX ACL mask

Showing top 20 of 234 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93236

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