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CVE-2026-64097— drm/amd/display: Validate GPIO pin LUT table size before iterating

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get_gpio_i2c_info()和bios_parser_get_gpio_pin_info()函数中GPIO引脚表解析器在迭代前未正确验证VBIOS table_header.structuresize字段，导致越界读取。

CVSS 7.8 · High EPSS 0.18% · P7

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux ae79c310b1a6f97429a5784b65f125d9cc9c95b1< 9900f6954be779011e7c2cd42addd87baf028bc5 affected
ae79c310b1a6f97429a5784b65f125d9cc9c95b1< fb30a3890d62fd50a95aef684faf64a307592e42 affected
ae79c310b1a6f97429a5784b65f125d9cc9c95b1< 67461e0c15335894cc5d3b84cda823bf8cbdc886 affected
ae79c310b1a6f97429a5784b65f125d9cc9c95b1< 7ca695b3122297b06a3ed605bbe1cd32c85d9f5a affected
ae79c310b1a6f97429a5784b65f125d9cc9c95b1< f2a4827e980ba07de4391fa84d9c39a12726bdd7 affected
ae79c310b1a6f97429a5784b65f125d9cc9c95b1< 86d2b20644b11d21fe52c596e6e922b4590a3e3f affected
4.15 affected
< 4.15 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-64097

Vulnerability Information
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Vulnerability Title
drm/amd/display: Validate GPIO pin LUT table size before iterating
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Validate GPIO pin LUT table size before iterating [Why&How] The GPIO pin table parsers in get_gpio_i2c_info() and bios_parser_get_gpio_pin_info() derive an element count from the VBIOS table_header.structuresize field, then iterate over gpio_pin[] entries. However, GET_IMAGE() only validates that the table header itself fits within the BIOS image. If the VBIOS reports a structuresize larger than the actual mapped data, the loop reads past the end of the BIOS image, causing an out-of-bounds read. Fix this by calling bios_get_image() to validate that the full claimed structuresize is accessible within the BIOS image before entering the loop in both functions. (cherry picked from commit ba5e95b43b773ae1bf1f66ee6b31eb774e65afe3)
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基金会开源的一款操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于get_gpio_i2c_info()和bios_parser_get_gpio_pin_info()函数中GPIO引脚表解析器在迭代前未正确验证VBIOS table_header.structuresize字段，导致越界读取。
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 ae79c310b1a6f97429a5784b65f125d9cc9c95b1 ~ 9900f6954be779011e7c2cd42addd87baf028bc5 -
Linux Linux 4.15 -

II. Public POCs for CVE-2026-64097

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III. Intelligence Information for CVE-2026-64097

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Patches & Fixes for CVE-2026-64097 (6)

Same Patch Batch · Linux · 2026-07-19 · 429 CVEs total

CVE-2026-63795 10.0 CRITICAL 9p: avoid putting oldfid in p9_client_walk() error path
CVE-2026-64091 9.8 CRITICAL batman-adv: tt: fix TOCTOU race for reported vlans
CVE-2026-53399 9.8 CRITICAL nfsd: release layout stid on setlease failure
CVE-2026-53398 9.8 CRITICAL NFSD: Fix SECINFO_NO_NAME decode error cleanup
CVE-2026-64047 9.8 CRITICAL net: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring
CVE-2026-64102 9.8 CRITICAL RDMA/siw: Reject MPA FPDU length underflow before signed receive math
CVE-2026-64056 9.8 CRITICAL net: ethernet: cortina: Make RX SKB per-port
CVE-2026-64046 9.8 CRITICAL net: tls: prevent chain-after-chain in plain text SG
CVE-2026-63984 9.8 CRITICAL ipv6: rpl: fix hdrlen overflow in ipv6_rpl_srh_decompress()
CVE-2026-63800 9.8 CRITICAL pNFS: Fix use-after-free in pnfs_update_layout()
CVE-2026-64061 9.8 CRITICAL netfs: Fix early put of sink folio in netfs_read_gaps()
CVE-2026-63924 9.8 CRITICAL ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
CVE-2026-64089 9.8 CRITICAL batman-adv: tt: fix negative last_changeset_len
CVE-2026-64136 9.8 CRITICAL smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked()
CVE-2026-63979 9.8 CRITICAL net/handshake: hand off the pinned file reference to accept_doit
CVE-2026-63886 9.8 CRITICAL scsi: target: iscsi: Validate CHAP_R length before base64 decode
CVE-2026-63887 9.8 CRITICAL scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf
CVE-2026-64122 9.8 CRITICAL net/mlx5e: Fix use-after-free in mlx5e_tx_reporter_timeout_recover
CVE-2026-64125 9.8 CRITICAL net: bcmgenet: keep RBUF EEE/PM disabled
CVE-2026-63825 9.8 CRITICAL gcov: use atomic counter updates to fix concurrent access crashes

Showing top 20 of 429 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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