{"cve":{"cve_id":"CVE-2026-53134","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_fib: fix stale stack leak via the OIFNAME register\n\nFor NFT_FIB_RESULT_OIFNAME the destination register is declared with\nlen = IFNAMSIZ (four 32-bit registers), but on the lookup-fail,\nRTN_LOCAL and oif-mismatch paths nft_fib{4,6}_eval() only writes one\nregister via \"*dest = 0\". The remaining three registers are left as\nwhatever was on the stack in nft_do_chain()'s struct nft_regs, and a\ndownstream expression that loads the register span can leak that\nuninitialised kernel stack to userspace.\n\nThe NFTA_FIB_F_PRESENT existence check has the same shape: it is only\nmeaningful for NFT_FIB_RESULT_OIF, yet it was accepted for any result type\nwhile the eval stores a single byte via nft_reg_store8(), leaving the rest\nof the declared span stale.\n\nFix both:\n\n - replace the bare \"*dest = 0\" in the eval with nft_fib_store_result(),\n   which strscpy_pad()s the whole IFNAMSIZ for OIFNAME (and is already\n   used on the other early-return path), and\n\n - restrict NFTA_FIB_F_PRESENT to NFT_FIB_RESULT_OIF and declare its\n   destination as a single u8, so the marked span matches the one byte\n   the eval writes.","published_at":"2026-06-25T08:38:23.348000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/6744e49fe51bfba26522acc2d0e9703cb41d8e50","https://git.kernel.org/stable/c/eca18feed38b3377a2ec5d1f22af1170c55d0171","https://git.kernel.org/stable/c/d19ddef8c327a4773ff81f8e51027d1e0b4cf069","https://git.kernel.org/stable/c/eb8a8124484dbc3c2b543e207da39bbccb703d31","https://git.kernel.org/stable/c/8c84885e9790823828bb8084736ea15769b1ac16","https://git.kernel.org/stable/c/84d8f58cf28a0415413f43ba7148f7bacd4c1b6e","https://git.kernel.org/stable/c/3544210609f6d1db282bbdeca639104ef624c393","https://git.kernel.org/stable/c/ab185e0c4fb82dfba6fb86f8271e06f931d9c64c"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:50.753831Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6d0cbcf09c506b9b022df8f9d7693a7cec3c732","version_start_inclusive":true,"version_end":"6744e49fe51bfba26522acc2d0e9703cb41d8e50","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6d0cbcf09c506b9b022df8f9d7693a7cec3c732:6744e49fe51bfba26522acc2d0e9703cb41d8e50"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6d0cbcf09c506b9b022df8f9d7693a7cec3c732","version_start_inclusive":true,"version_end":"eca18feed38b3377a2ec5d1f22af1170c55d0171","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6d0cbcf09c506b9b022df8f9d7693a7cec3c732:eca18feed38b3377a2ec5d1f22af1170c55d0171"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6d0cbcf09c506b9b022df8f9d7693a7cec3c732","version_start_inclusive":true,"version_end":"d19ddef8c327a4773ff81f8e51027d1e0b4cf069","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6d0cbcf09c506b9b022df8f9d7693a7cec3c732:d19ddef8c327a4773ff81f8e51027d1e0b4cf069"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6d0cbcf09c506b9b022df8f9d7693a7cec3c732","version_start_inclusive":true,"version_end":"eb8a8124484dbc3c2b543e207da39bbccb703d31","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6d0cbcf09c506b9b022df8f9d7693a7cec3c732:eb8a8124484dbc3c2b543e207da39bbccb703d31"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6d0cbcf09c506b9b022df8f9d7693a7cec3c732","version_start_inclusive":true,"version_end":"8c84885e9790823828bb8084736ea15769b1ac16","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6d0cbcf09c506b9b022df8f9d7693a7cec3c732:8c84885e9790823828bb8084736ea15769b1ac16"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6d0cbcf09c506b9b022df8f9d7693a7cec3c732","version_start_inclusive":true,"version_end":"84d8f58cf28a0415413f43ba7148f7bacd4c1b6e","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6d0cbcf09c506b9b022df8f9d7693a7cec3c732:84d8f58cf28a0415413f43ba7148f7bacd4c1b6e"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6d0cbcf09c506b9b022df8f9d7693a7cec3c732","version_start_inclusive":true,"version_end":"3544210609f6d1db282bbdeca639104ef624c393","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6d0cbcf09c506b9b022df8f9d7693a7cec3c732:3544210609f6d1db282bbdeca639104ef624c393"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6d0cbcf09c506b9b022df8f9d7693a7cec3c732","version_start_inclusive":true,"version_end":"ab185e0c4fb82dfba6fb86f8271e06f931d9c64c","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6d0cbcf09c506b9b022df8f9d7693a7cec3c732:ab185e0c4fb82dfba6fb86f8271e06f931d9c64c"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"4.10","version_start_inclusive":true,"version_end":"4.10","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:4.10:4.10"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"4.10","version_end_inclusive":false,"cpe23_uri":"cve5:linux:lin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published","source":null}]}