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CVE-2026-53330— drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval()

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dp_get_eq_aux_rd_interval()函数中存在越界读取问题，当sink通过DPCD报告8个LTTPR repeater时，offset参数可达MAX_REPEATER_CNT (8)，导致对aux_rd_interval[7]的越界读取。

AI Predicted 4.4 Difficulty: Moderate EPSS 0.13% · P2

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 8e5100a575433cc185a2e224280fbd873b6692dd< 454d3b3d499c18373f8960d31aea48338a3ca9e0 affected
8e5100a575433cc185a2e224280fbd873b6692dd< dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3e affected
8e5100a575433cc185a2e224280fbd873b6692dd< e8b4d37eba05141ee01794fc6b7f2da808cee83b affected
5.6 affected
< 5.6 unaffected
6.18.36≤ 6.18.* unaffected
7.0.13≤ 7.0.* unaffected
7.1≤ * unaffected
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I. Basic Information for CVE-2026-53330

Vulnerability Information
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Vulnerability Title
drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval() [Why & How] The aux_rd_interval array in struct dc_lttpr_caps is declared with MAX_REPEATER_CNT - 1 (7) elements, indexed 0..6. However, the offset parameter passed to dp_get_eq_aux_rd_interval() can be as large as MAX_REPEATER_CNT (8) when a sink reports 8 LTTPR repeaters via DPCD. This leads to an out-of-bounds read of aux_rd_interval[7] when offset is 8. Fix this by growing aux_rd_interval to MAX_REPEATER_CNT elements to accommodate the full range of valid repeater counts defined by the DP spec. (cherry picked from commit a55a458a8df37a65ffda5cf721d554a8f74f6b04)
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dp_get_eq_aux_rd_interval()函数中存在越界读取问题，当sink通过DPCD报告8个LTTPR repeater时，offset参数可达MAX_REPEATER_CNT (8)，导致对aux_rd_interval[7]的越界读取。
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 8e5100a575433cc185a2e224280fbd873b6692dd ~ 454d3b3d499c18373f8960d31aea48338a3ca9e0 -
Linux Linux 5.6 -

II. Public POCs for CVE-2026-53330

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III. Intelligence Information for CVE-2026-53330

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Patches & Fixes for CVE-2026-53330 (3)

Same Patch Batch · Linux · 2026-07-01 · 31 CVEs total

CVE-2026-53355 9.8 CRITICAL net: rds: clear i_sends on setup unwind
CVE-2026-53354 8.8 HIGH arm64: errata: Mitigate TLBI errata on various Arm CPUs
CVE-2026-53356 7.8 HIGH drm/i915/gem: Fix phys BO pread/pwrite with offset
CVE-2026-53341 7.8 HIGH fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh()
CVE-2026-53329 7.0 HIGH drm/amd/display: Use krealloc_array() in dal_vector_reserve()
CVE-2026-53342 arm64: mm: call pagetable dtor when freeing hot-removed page tables
CVE-2026-53353 hsr: Remove WARN_ONCE() in hsr_addr_is_self().
CVE-2026-53352 signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads()
CVE-2026-53351 riscv/ptrace: Use USER_REGSET_NOTE_TYPE for REGSET_CFI
CVE-2026-53350 ASoC: wm_adsp: Fix NULL dereference when removing firmware controls
CVE-2026-53348 ASoC: SDCA: fix NULL pointer dereference in sdca_dev_unregister_functions
CVE-2026-53349 netfilter: nf_conntrack: destroy stale expectfn expectations on unregister
CVE-2026-53346 rust: arm64: set uwtable llvm module flag for CONFIG_UNWIND_TABLES
CVE-2026-53347 drm/virtio: Fix driver removal with disabled KMS
CVE-2026-53344 pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init
CVE-2026-53345 KVM: Don't WARN if memory is dirtied without a vCPU when the VM is dying
CVE-2026-53343 ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow
CVE-2026-53327 debugobjects: Do not fill_pool() if pi_blocked_on
CVE-2026-53340 i2c: imx: fix clock and pinctrl state inconsistency in runtime PM
CVE-2026-53339 i2c: qcom-cci: Fix NULL pointer dereference in cci_remove()

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-2026-53330

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