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CVE-2026-53701— Gstreamer1-plugins-bad-free: gstreamer: out-of-bounds write in h.266/vvc pps picture partition parser

CVSS 6.5 · Medium EPSS 0.21% · P11

Possible ATT&CK Techniques 1AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 4

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 10anyaffected
Red HatRed Hat Enterprise Linux 7anyaffected
Red HatRed Hat Enterprise Linux 8anyaffected
Red HatRed Hat Enterprise Linux 9anyaffected
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I. Basic Information for CVE-2026-53701

Vulnerability Information
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Vulnerability Title
Gstreamer1-plugins-bad-free: gstreamer: out-of-bounds write in h.266/vvc pps picture partition parser
Source: NVD (National Vulnerability Database)
Vulnerability Description
An out-of-bounds write vulnerability was found in GStreamer's H.266/VVC PPS picture partition parser in gst-plugins-bad. In the multi-slice-in-tile processing of gst_h266_parser_parse_picture_partition() (gsth266parser.c), the loop iterates without checking that the slice index stays within bounds, writing past three fixed-size arrays (slice_height_in_ctus, slice_top_left_ctu_x, slice_top_left_ctu_y) in the GstH266PPS structure. While the initial proof-of-concept demonstrated a 4-byte out-of-bounds write, the code permits larger writes across multiple iterations. A crafted H.266/VVC media file can trigger this vulnerability.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
Vulnerability Title
gst-plugins-bad 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
gst-plugins-bad是GStreamer开源的一个GStreamer插件。 gst-plugins-bad存在缓冲区错误漏洞，该漏洞源于H.266/VVC PPS图片分区解析器中gst_h266_parser_parse_picture_partition()函数的多切片处理循环未检查切片索引是否越界，写入GstH266PPS结构中三个固定大小数组之外，精心构造的H.266/VVC媒体文件可触发此漏洞。
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

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-53701

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III. Intelligence Information for CVE-2026-53701

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Vendor Advisories for CVE-2026-53701 (2)

Same Patch Batch · Red Hat · 2026-06-11 · 5 CVEs total

CVE-2026-117747.6 HIGH389-ds-base: 389-ds-base: integer overflow in sasl packet length bypasses size limit leadi
CVE-2026-537026.5 MEDIUMGstreamer1-plugins-bad-free: gstreamer: stack buffer overflow in h.265 buffering period se
CVE-2026-118505.0 MEDIUMKrb5: krb5: integer underflow in berval2tl_data() leads to heap out-of-bounds read
CVE-2026-119864.9 MEDIUMKeycloak-rest-admin-ui-ext: authorization bypass vulnerability in the admin-ui-ext bulk ro

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-787

V. Comments for CVE-2026-53701

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