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CVE-2026-53329— drm/amd/display: Use krealloc_array() in dal_vector_reserve()

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dal_vector_reserve()函数在计算分配大小时使用uint32_t整数运算，当值溢出时会默默回绕到一个小值，导致krealloc返回比预期更小的缓冲区，可能在后续向量追加时造成堆溢出。

CVSS 7.0 · High EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2004f45ef83f07f43f5da6ede780b08068c7583d< 9540b0a4d13e4ede64ae1197d66a176d2149daa9 affected
2004f45ef83f07f43f5da6ede780b08068c7583d< 31180638a33acad12c863132704a76536fb66211 affected
2004f45ef83f07f43f5da6ede780b08068c7583d< b15825deac1acff72638bbc8f05b89ceef8dfb13 affected
2004f45ef83f07f43f5da6ede780b08068c7583d< 201151e120f0062bcda21cad5d007b82725ad23b affected
2004f45ef83f07f43f5da6ede780b08068c7583d< a914aa802669e073f014dae2e5708633b5cecd34 affected
2004f45ef83f07f43f5da6ede780b08068c7583d< e09689286385a66311ac6922af95339d7a3cef8d affected
2004f45ef83f07f43f5da6ede780b08068c7583d< de988c7a31f0774f07894cfe4802996f318e2870 affected
2004f45ef83f07f43f5da6ede780b08068c7583d< da48bc4461b8a5ebfb9264c9b191a701d8e99009 affected
… +10 more rows
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I. Basic Information for CVE-2026-53329

Vulnerability Information
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Vulnerability Title
drm/amd/display: Use krealloc_array() in dal_vector_reserve()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Use krealloc_array() in dal_vector_reserve() [Why & How] dal_vector_reserve() computes the allocation size as "capacity * vector->struct_size" using uint32_t arithmetic, which can silently wrap to a small value on overflow. This would cause krealloc to return a smaller buffer than expected, leading to heap overflows on subsequent vector appends. Replace krealloc() with krealloc_array() which performs an internal overflow check and returns NULL on wrap, preventing the issue. (cherry picked from commit 37668568641ccc4cc1dbca4923d0a16609dd5707)
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/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基金会开源的一款操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于dal_vector_reserve()函数在计算分配大小时使用uint32_t整数运算，当值溢出时会默默回绕到一个小值，导致krealloc返回比预期更小的缓冲区，可能在后续向量追加时造成堆溢出。
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 2004f45ef83f07f43f5da6ede780b08068c7583d ~ 9540b0a4d13e4ede64ae1197d66a176d2149daa9 -
Linux Linux 4.15 -

II. Public POCs for CVE-2026-53329

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III. Intelligence Information for CVE-2026-53329

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Patches & Fixes for CVE-2026-53329 (7)

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-2026-53342 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()
CVE-2026-53338 net: airoha: Add NULL check for of_reserved_mem_lookup() in airoha_qdma_init_hfwd_queues()

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-2026-53329

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