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CVE-2026-97576— media: v4l2-ctrls: validate HEVC tile counts

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，以下漏洞已修复： 媒体子系统：v4l2-ctrls：验证 HEVC 瓦片（tile）计数 无状态 HEVC 解码器会从 数组中读取 个条目，并从 数组中读取 个条目，将这些值用作瓦片循环的边界。然而， 函数并未对这些类型为 u8 的计数值进行边界检查。因此，当启用瓦片功能且瓦片计数超过用户空间 API（uAPI）数组容量时，拒绝处理 V4L2_CTRL_TYPE_HEVC_PPS 控制类型。此行为与现有的复合控制范围检查保持一致。

CVSS 7.8 · High EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 256fa3920874b0f1f4cb79ad6766493a22187153< 400cd78a63cc647412cf069c9851bdea2818340c affected
256fa3920874b0f1f4cb79ad6766493a22187153< c7b1ef6dc57f4e57fe27cfdd3bf82033ed91ca34 affected
256fa3920874b0f1f4cb79ad6766493a22187153< ba1023d3a6d5d244d59f20c4ba6af4879ae08a9f affected
256fa3920874b0f1f4cb79ad6766493a22187153< dc694a9929f7cb9c88ef91e45eb982b7bbe5a477 affected
5.5 affected
< 5.5 unaffected
6.12.111≤ 6.12.* unaffected
6.18.53≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-97576

Vulnerability Information
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Vulnerability Title
media: v4l2-ctrls: validate HEVC tile counts
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: media: v4l2-ctrls: validate HEVC tile counts The stateless HEVC decoders read num_tile_columns_minus1 + 1 entries from column_width_minus1[] and num_tile_rows_minus1 + 1 from row_height_minus1[] and use them as tile-loop bounds, but std_validate_compound() does not bound these u8 counts. Reject a V4L2_CTRL_TYPE_HEVC_PPS with tiling enabled whose tile counts exceed the uAPI array capacity, mirroring the existing compound-control range checks.
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 256fa3920874b0f1f4cb79ad6766493a22187153 ~ 400cd78a63cc647412cf069c9851bdea2818340c -
Linux Linux 5.5 -

II. Public POCs for CVE-2026-97576

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III. Intelligence Information for CVE-2026-97576

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Patches & Fixes for CVE-2026-97576 (4)

Same Patch Batch · Linux · 2026-09-25 · 372 CVEs total

CVE-2026-100075 9.8 CRITICAL RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters
CVE-2026-97957 8.8 HIGH net: hinic: fix mailbox segment buffer overflow
CVE-2026-97527 8.8 HIGH scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock
CVE-2026-97528 8.8 HIGH scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error
CVE-2026-97555 8.8 HIGH smb: client: fix heap overflow in DACL owner/group rewrite
CVE-2026-98115 8.8 HIGH ksmbd: safely drain sessions during logoff
CVE-2026-97525 8.2 HIGH x86/mm/pat: Allocate split page tables as kernel page tables
CVE-2026-98130 8.1 HIGH sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START
CVE-2026-97573 8.1 HIGH bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
CVE-2026-98069 8.1 HIGH net/rds: acquire the fastpath locks in rds_conn_shutdown()
CVE-2026-98070 8.1 HIGH net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()
CVE-2026-97570 8.1 HIGH bnxt_en: Bound SW TPA IDs to prevent crashes
CVE-2026-97911 7.8 HIGH accel: ethosu: Ensure SRAM region size matches job
CVE-2026-98023 7.8 HIGH vxlan: reject dynamic fdb entries that reference a nexthop id
CVE-2026-97910 7.8 HIGH ASoC: sprd: validate compress buffer sizes against fixed allocations
CVE-2026-97584 7.8 HIGH afs: Fix incorrect free in candidate cleanup in afs_lookup_server()
CVE-2026-98143 7.8 HIGH accel: ethosu: Don't read the U65 rounding mode as a storage mode
CVE-2026-97903 7.8 HIGH exit: hold a reference to thread_pid across proc_flush_pid
CVE-2026-97548 7.8 HIGH xfs: fix the rtrmap and rtrefcount _maxlevels_ondisk functions
CVE-2026-97594 7.8 HIGH landlock: Fix use-after-free of the source's parent directory

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-97576

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