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{"bugzilla": {"description": "libgphoto2: libgphoto2: Denial of service via oversized thumbnail processing", "id": "2565320", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2565320"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["libgphoto2 through 2.5.34 contains a heap out-of-bounds read and write vulnerability in jl2005bcd_decompress() that allows malicious USB cameras to corrupt heap memory via oversized thumbnail processing. Attackers can supply small allocation-table values and a thumbnail header byte so in-place byte-swapping exceeds the buffer by about 30 KB, leaking heap contents in preview images.", "A flaw was found in libgphoto2. An attacker connecting a malicious USB camera can trigger out-of-bounds read and write operations during the decompression of oversized image thumbnails. This vulnerability allows the corruption of heap memory, leading to a denial of service (DoS) or the disclosure of sensitive memory contents in preview images."], "mitigation": {"lang": "en:us", "value": "Compile binaries with buffer overflow detection flags (_FORTIFY_SOURCE=2 or higher) to terminate the process before out-of-bounds writes corrupt adjacent memory. In addition, enforce full system-level exploit mitigations\u2014including Address Space Layout Randomization (ASLR), full RELRO with Position Independent Executables (PIE), and Control Flow Integrity (CFI)\u2014to impede reliable memory targeting and block unauthorized code execution."}, "name": "CVE-2026-120452", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "libgphoto2", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "libgphoto2", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "libgphoto2", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "libgphoto2", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "libgphoto2", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-11-02T14:29:10Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-120452\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-120452\nhttps://github.com/gphoto/libgphoto2/blob/v2.5.34/camlibs/jl2005c/jl2005bcd_decompress.c#L127-L130\nhttps://github.com/gphoto/libgphoto2/commit/30bf7ace6d47cfe1232ea73bde2aceb95aba4bfb\nhttps://github.com/gphoto/libgphoto2/commit/af3b8e9c542cda863fb5f2f3cfeb261bd78e4442\nhttps://github.com/gphoto/libgphoto2/issues/1326\nhttps://hackmd.io/@haindpwn/libgphoto2-jl2005c-init-alloc-table-buffer-overflow\nhttps://www.vulncheck.com/advisories/libgphoto2-through-2.5.34-heap-out-of-bounds-read-write-via-jl2005c-thumbnail-conversion"], "statement": "This flaw is rated as Moderate severity because successful exploitation requires physical access to attach a manipulated hardware device or an emulated USB peripheral, along with user interaction to trigger thumbnail extraction. While libgphoto2 is commonly installed on Red Hat Enterprise Linux desktop environments and media workstations to interface with digital cameras, default server deployments do not actively parse camera data unless invoked by an operator or automated media-import daemon. Although memory corruption can cause application crashes or disclose adjacent heap contents, an attacker cannot exploit this flaw remotely over a network.", "threat_severity": "Moderate"}