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CVE-2026-23227— drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于缺少锁保护内存分配和释放操作，可能导致释放后重用。

CVSS 7.8 · High EPSS 0.17% · P6

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux d3b62dbfc7b9bb013926f56db79b60f6c18c392f< 56966a4cfa925ec24edb68ab652a740a7abe2c4d affected
d3b62dbfc7b9bb013926f56db79b60f6c18c392f< 9e1ef9396a1899925911b1729cb65665420268df affected
d3b62dbfc7b9bb013926f56db79b60f6c18c392f< 92dd1f38d7db75374dcdaf54f1d79d67bffd54e5 affected
d3b62dbfc7b9bb013926f56db79b60f6c18c392f< 1b24d3e8792bcc050c70e8e0dea6b49c4fc63b13 affected
d3b62dbfc7b9bb013926f56db79b60f6c18c392f< abfdf449fb3d7b42e85a1ad1c8694b768b1582f4 affected
d3b62dbfc7b9bb013926f56db79b60f6c18c392f< 60b75407c172e1f341a8a5097c5cbc97dbbdd893 affected
d3b62dbfc7b9bb013926f56db79b60f6c18c392f< 0cd2c155740dbd00868ac5a8ae5d14cd6b9ed385 affected
d3b62dbfc7b9bb013926f56db79b60f6c18c392f< 52b330799e2d6f825ae2bb74662ec1b10eb954bb affected
… +10 more rows
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I. Basic Information for CVE-2026-23227

Vulnerability Information
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Vulnerability Title
drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free Exynos Virtual Display driver performs memory alloc/free operations without lock protection, which easily causes concurrency problem. For example, use-after-free can occur in race scenario like this: ``` CPU0 CPU1 CPU2 ---- ---- ---- vidi_connection_ioctl() if (vidi->connection) // true drm_edid = drm_edid_alloc(); // alloc drm_edid ... ctx->raw_edid = drm_edid; ... drm_mode_getconnector() drm_helper_probe_single_connector_modes() vidi_get_modes() if (ctx->raw_edid) // true drm_edid_dup(ctx->raw_edid); if (!drm_edid) // false ... vidi_connection_ioctl() if (vidi->connection) // false drm_edid_free(ctx->raw_edid); // free drm_edid ... drm_edid_alloc(drm_edid->edid) kmemdup(edid); // UAF!! ... ``` To prevent these vulns, at least in vidi_context, member variables related to memory alloc/free should be protected with ctx->lock.
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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于缺少锁保护内存分配和释放操作，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 d3b62dbfc7b9bb013926f56db79b60f6c18c392f ~ 56966a4cfa925ec24edb68ab652a740a7abe2c4d -
Linux Linux 3.6 -

II. Public POCs for CVE-2026-23227

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III. Intelligence Information for CVE-2026-23227

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Patches & Fixes for CVE-2026-23227 (3)

Same Patch Batch · Linux · 2026-02-18 · 31 CVEs total

CVE-2026-23230 8.8 HIGH smb: client: split cached_fid bitfields to avoid shared-byte RMW races
CVE-2026-23226 8.8 HIGH ksmbd: add chann_lock to protect ksmbd_chann_list xarray
CVE-2025-71234 8.8 HIGH wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add
CVE-2026-23225 7.8 HIGH sched/mmcid: Don't assume CID is CPU owned on mode switch
CVE-2026-23224 7.8 HIGH erofs: fix UAF issue for file-backed mounts w/ directio option
CVE-2026-23222 7.8 HIGH crypto: omap - Allocate OMAP_CRYPTO_FORCE_COPY scatterlists correctly
CVE-2025-71236 7.5 HIGH scsi: qla2xxx: Validate sp before freeing associated memory
CVE-2025-71233 PCI: endpoint: Avoid creating sub-groups asynchronously
CVE-2026-23229 crypto: virtio - Add spinlock protection with virtqueue notification
CVE-2026-23228 smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()
CVE-2026-23223 xfs: fix UAF in xchk_btree_check_block_owner
CVE-2026-23221 bus: fsl-mc: fix use-after-free in driver_override_show()
CVE-2026-23220 ksmbd: fix infinite loop caused by next_smb2_rcv_hdr_off reset in error paths
CVE-2025-71237 nilfs2: Fix potential block overflow that cause system hang
CVE-2025-71235 scsi: qla2xxx: Delay module unload while fabric scan in progress
CVE-2026-23211 mm, swap: restore swap_space attr aviod kernel panic
CVE-2025-71232 scsi: qla2xxx: Free sp in error path to fix system crash
CVE-2025-71231 crypto: iaa - Fix out-of-bounds index in find_empty_iaa_compression_mode
CVE-2025-71230 hfs: ensure sb->s_fs_info is always cleaned up
CVE-2025-71229 wifi: rtw88: Fix alignment fault in rtw_core_enable_beacon()

Showing top 20 of 31 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23227

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