{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-46250", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-46250", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-06-03T15:49:46.390Z", "updatedAt": "2026-08-05T12:30:44.867Z", "importedAt": "2026-10-24T01:58:14.884Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "MIPS: Work around LLVM bug when gp is used as global register variable", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nMIPS: Work around LLVM bug when gp is used as global register variable\n\nOn MIPS, __current_thread_info is defined as global register variable\nlocating in $gp, and is simply assigned with new address during kernel\nrelocation.\n\nThis however is broken with LLVM, which always restores $gp if it finds\n$gp is clobbered in any form, including when intentionally through a\nglobal register variable. This is against GCC's documentation[1], which\nrequires a callee-saved register used as global register variable not to\nbe restored if it's clobbered.\n\nAs a result, $gp will continue to point to the unrelocated kernel after\nthe epilog of relocate_kernel(), leading to an early crash in init_idle,\n\n[ 0.000000] CPU 0 Unable to handle kernel paging request at virtual address 0000000000000000, epc == ffffffff81afada8, ra == ffffffff81afad90\n[ 0.000000] Oops[#1]:\n[ 0.000000] CPU: 0 UID: 0 PID: 0 Comm: swapper Tainted: G W 6.19.0-rc5-00262-gd3eeb99bbc99-dirty #188 VOLUNTARY\n[ 0.000000] Tainted: [W]=WARN\n[ 0.000000] Hardware name: loongson,loongson64v-4core-virtio\n[ 0.000000] $ 0 : 0000000000000000 0000000000000000 0000000000000001 0000000000000000\n[ 0.000000] $ 4 : ffffffff80b80ec0 ffffffff80b53d48 0000000000000000 00000000000f4240\n[ 0.000000] $ 8 : 0000000000000100 ffffffff81d82f80 ffffffff81d82f80 0000000000000001\n[ 0.000000] $12 : 0000000000000000 ffffffff81776f58 00000000000005da 0000000000000002\n[ 0.000000] $16 : ffffffff80b80e40 0000000000000000 ffffffff80b81614 9800000005dfbe80\n[ 0.000000] $20 : 00000000540000e0 ffffffff81980000 0000000000000000 ffffffff80f81c80\n[ 0.000000] $24 : 0000000000000a26 ffffffff8114fb90\n[ 0.000000] $28 : ffffffff80b50000 ffffffff80b53d40 0000000000000000 ffffffff81afad90\n[ 0.000000] Hi : 0000000000000000\n[ 0.000000] Lo : 0000000000000000\n[ 0.000000] epc : ffffffff81afada8 init_idle+0x130/0x270\n[ 0.000000] ra : ffffffff81afad90 init_idle+0x118/0x270\n[ 0.000000] Status: 540000e2\tKX SX UX KERNEL EXL\n[ 0.000000] Cause : 00000008 (ExcCode 02)\n[ 0.000000] BadVA : 0000000000000000\n[ 0.000000] PrId : 00006305 (ICT Loongson-3)\n[ 0.000000] Process swapper (pid: 0, threadinfo=(____ptrval____), task=(____ptrval____), tls=0000000000000000)\n[ 0.000000] Stack : 9800000005dfbf00 ffffffff8178e950 0000000000000000 0000000000000000\n[ 0.000000] 0000000000000000 ffffffff81970000 000000000000003f ffffffff810a6528\n[ 0.000000] 0000000000000001 9800000005dfbe80 9800000005dfbf00 ffffffff81980000\n[ 0.000000] ffffffff810a6450 ffffffff81afb6c0 0000000000000000 ffffffff810a2258\n[ 0.000000] ffffffff81d82ec8 ffffffff8198d010 ffffffff81b67e80 ffffffff8197dd98\n[ 0.000000] ffffffff81d81c80 ffffffff81930000 0000000000000040 0000000000000000\n[ 0.000000] 0000000000000000 0000000000000000 0000000000000000 0000000000000000\n[ 0.000000] 0000000000000000 000000000000009e ffffffff9fc01000 0000000000000000\n[ 0.000000] 0000000000000000 0000000000000000 0000000000000000 0000000000000000\n[ 0.000000] 0000000000000000 ffffffff81ae86dc ffffffff81b3c741 0000000000000002\n[ 0.000000] ...\n[ 0.000000] Call Trace:\n[ 0.000000] [] init_idle+0x130/0x270\n[ 0.000000] [] sched_init+0x5c8/0x6c0\n[ 0.000000] [] start_kernel+0x27c/0x7a8\n\nThis bug has been reported to LLVM[2] and affects version from (at\nleast) 18 to 21. Let's work around this by using inline assembly to\nassign $gp before a fix is widely available.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "279b991b24d2439fbe9d2f093988b9c8aed2603d", "status": "affected", "versionType": "git", "lessThan": "05bff9b0ae095b2420cfebb4a96759a09334bec6" }, { "version": "279b991b24d2439fbe9d2f093988b9c8aed2603d", "status": "affected", "versionType": "git", "lessThan": "1fe3b402b1e97a1718df3be0a1d3eee20133e735" }, { "version": "279b991b24d2439fbe9d2f093988b9c8aed2603d", "status": "affected", "versionType": "git", "lessThan": "4dc65b40fb80c2020efbf139b9a38d30f9a37b92" }, { "version": "279b991b24d2439fbe9d2f093988b9c8aed2603d", "status": "affected", "versionType": "git", "lessThan": "c0155dee51b9f5f48aaf5c71cae005eb0e36521f" }, { "version": "279b991b24d2439fbe9d2f093988b9c8aed2603d", "status": "affected", "versionType": "git", "lessThan": "e3a6498a63394218561065a9a7a597a204f52f6a" }, { "version": "279b991b24d2439fbe9d2f093988b9c8aed2603d", "status": "affected", "versionType": "git", "lessThan": "561834f6d6f52b8a1791331e94b2aac753491d2a" }, { "version": "279b991b24d2439fbe9d2f093988b9c8aed2603d", "status": "affected", "versionType": "git", "lessThan": "9bc3b0ae5203aba650297fdf3e1e774125e423f2" }, { "version": "279b991b24d2439fbe9d2f093988b9c8aed2603d", "status": "affected", "versionType": "git", "lessThan": "30bfc2d6a1132a89a5f1c3b96c59cf3e4d076ea3" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.7", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.7" }, { "version": "5.10.252", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.202", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.165", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.128", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.75", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.14", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "6.19.4", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.19.*" }, { "version": "7.0", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }