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CVE-2026-64231— drm/msm/dsi: don't dump registers past the mapped region

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基金会开源的一款操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于DSI 6G平台上内存转储时未根据io_offset调整转储大小，可能导致访问未映射的内存区域。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645< 5e2c196c3430fb94225c4102b1028d0146544761 affected
bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645< 567b5e976e2e15280d78c9ef2add1954a0bbb5b1 affected
bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645< 9f8274749d9010a1a72f97e547b7eb9ebb82345b affected
bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645< a184aec790135938b0fadb415e55accd1f8685a0 affected
bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645< ab871d5882953e5574ae2bc47bec88c2e3d22663 affected
bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645< 5b49a46baa853b26dbefa65c6c75dd9ff69f63d4 affected
5.14 affected
< 5.14 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-64231

Vulnerability Information
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Vulnerability Title
drm/msm/dsi: don't dump registers past the mapped region
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/msm/dsi: don't dump registers past the mapped region On DSI 6G platforms the IO address space is internally adjusted by io_offset. Later this adjusted address might be used for memory dumping. However the size that is used for memory dumping isn't adjusted to account for the io_offset, leading to the potential access to the unmapped region. Lower ctrl_size by the io_offset value to prevent access past the mapped area. msm_disp_snapshot_add_block+0x1d4/0x3c8 [msm] (P) msm_dsi_host_snapshot+0x4c/0x78 [msm] msm_dsi_snapshot+0x28/0x50 [msm] msm_disp_snapshot_capture_state+0x74/0x140 [msm] msm_disp_snapshot_state_sync+0x60/0x90 [msm] _msm_disp_snapshot_work+0x30/0x90 [msm] kthread_worker_fn+0xdc/0x460 kthread+0x120/0x140 Patchwork: https://patchwork.freedesktop.org/patch/721747/
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
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于DSI 6G平台上内存转储时未根据io_offset调整转储大小，可能导致访问未映射的内存区域。
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 bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 ~ 5e2c196c3430fb94225c4102b1028d0146544761 -
Linux Linux 5.14 -

II. Public POCs for CVE-2026-64231

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III. Intelligence Information for CVE-2026-64231

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Patches & Fixes for CVE-2026-64231 (6)

Same Patch Batch · Linux · 2026-07-24 · 48 CVEs total

CVE-2026-64232 9.8 CRITICAL block: recompute nr_integrity_segments in blk_insert_cloned_request
CVE-2026-64216 9.8 CRITICAL netfs: Fix potential UAF in netfs_unlock_abandoned_read_pages()
CVE-2026-64255 8.8 HIGH wifi: iwlwifi: mld: validate sta_mask before ffs() in BA session handlers
CVE-2026-64247 8.4 HIGH KVM: x86: hyper-v: Bound the bank index when querying sparse banks
CVE-2026-64235 8.1 HIGH x86/ftrace: Relocate %rip-relative percpu refs in dynamic trampolines
CVE-2026-64223 8.1 HIGH wifi: mac80211: consume only present negotiated TTLM maps
CVE-2026-64226 7.8 HIGH sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path
CVE-2026-64221 7.8 HIGH spi: ti-qspi: fix use-after-free after DMA setup failure
CVE-2026-64218 7.8 HIGH batman-adv: bla: fix report_work leak on backbone_gw purge
CVE-2026-64251 7.8 HIGH pwrseq: core: fix use-after-free in pwrseq_debugfs_seq_next()
CVE-2026-64217 7.8 HIGH netfs: Fix overrun check in netfs_extract_user_iter()
CVE-2026-64208 7.5 HIGH crypto/krb5, rxrpc: Fix lack of pre-decrypt/pre-verify length checks
CVE-2026-64210 7.5 HIGH net/mlx5e: xsk: Fix unlocked writing to ICOSQ
CVE-2026-64243 7.1 HIGH ASoC: codecs: simple-mux: Fix enum control bounds check
CVE-2026-64222 7.0 HIGH octeontx2-pf: avoid double free of pool->stack on AQ init failure
CVE-2026-64219 7.0 HIGH drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_as
CVE-2026-64250 LoongArch: Report dying CPU to RCU in stop_this_cpu()
CVE-2026-64252 MIPS: DEC: Prevent initial console buffer from landing in XKPHYS
CVE-2026-64249 fpga: region: fix use-after-free in child_regions_with_firmware()
CVE-2026-64220 device property: set fwnode->secondary to NULL in fwnode_init()

Showing top 20 of 48 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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