{ "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-2023-53135", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53135", "idYear": 2023, "status": "PUBLISHED", "publishedAt": "2025-05-02T15:56:08.287Z", "updatedAt": "2026-05-11T19:39:08.528Z", "importedAt": "2026-10-24T01:57:03.413Z", "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": "riscv: Use READ_ONCE_NOCHECK in imprecise unwinding stack mode", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: Use READ_ONCE_NOCHECK in imprecise unwinding stack mode\n\nWhen CONFIG_FRAME_POINTER is unset, the stack unwinding function\nwalk_stackframe randomly reads the stack and then, when KASAN is enabled,\nit can lead to the following backtrace:\n\n[ 0.000000] ==================================================================\n[ 0.000000] BUG: KASAN: stack-out-of-bounds in walk_stackframe+0xa6/0x11a\n[ 0.000000] Read of size 8 at addr ffffffff81807c40 by task swapper/0\n[ 0.000000]\n[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.2.0-12919-g24203e6db61f #43\n[ 0.000000] Hardware name: riscv-virtio,qemu (DT)\n[ 0.000000] Call Trace:\n[ 0.000000] [] walk_stackframe+0x0/0x11a\n[ 0.000000] [] init_param_lock+0x26/0x2a\n[ 0.000000] [] walk_stackframe+0xa2/0x11a\n[ 0.000000] [] dump_stack_lvl+0x22/0x36\n[ 0.000000] [] print_report+0x198/0x4a8\n[ 0.000000] [] init_param_lock+0x26/0x2a\n[ 0.000000] [] walk_stackframe+0xa2/0x11a\n[ 0.000000] [] kasan_report+0x9a/0xc8\n[ 0.000000] [] walk_stackframe+0xa2/0x11a\n[ 0.000000] [] walk_stackframe+0xa2/0x11a\n[ 0.000000] [] desc_make_final+0x80/0x84\n[ 0.000000] [] stack_trace_save+0x88/0xa6\n[ 0.000000] [] filter_irq_stacks+0x72/0x76\n[ 0.000000] [] devkmsg_read+0x32a/0x32e\n[ 0.000000] [] kasan_save_stack+0x28/0x52\n[ 0.000000] [] desc_make_final+0x7c/0x84\n[ 0.000000] [] stack_trace_save+0x84/0xa6\n[ 0.000000] [] kasan_set_track+0x12/0x20\n[ 0.000000] [] __kasan_slab_alloc+0x58/0x5e\n[ 0.000000] [] __kmem_cache_create+0x21e/0x39a\n[ 0.000000] [] create_boot_cache+0x70/0x9c\n[ 0.000000] [] kmem_cache_init+0x6c/0x11e\n[ 0.000000] [] mm_init+0xd8/0xfe\n[ 0.000000] [] start_kernel+0x190/0x3ca\n[ 0.000000]\n[ 0.000000] The buggy address belongs to stack of task swapper/0\n[ 0.000000] and is located at offset 0 in frame:\n[ 0.000000] stack_trace_save+0x0/0xa6\n[ 0.000000]\n[ 0.000000] This frame has 1 object:\n[ 0.000000] [32, 56) 'c'\n[ 0.000000]\n[ 0.000000] The buggy address belongs to the physical page:\n[ 0.000000] page:(____ptrval____) refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x81a07\n[ 0.000000] flags: 0x1000(reserved|zone=0)\n[ 0.000000] raw: 0000000000001000 ff600003f1e3d150 ff600003f1e3d150 0000000000000000\n[ 0.000000] raw: 0000000000000000 0000000000000000 00000001ffffffff\n[ 0.000000] page dumped because: kasan: bad access detected\n[ 0.000000]\n[ 0.000000] Memory state around the buggy address:\n[ 0.000000] ffffffff81807b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[ 0.000000] ffffffff81807b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[ 0.000000] >ffffffff81807c00: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 f3\n[ 0.000000] ^\n[ 0.000000] ffffffff81807c80: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00\n[ 0.000000] ffffffff81807d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[ 0.000000] ==================================================================\n\nFix that by using READ_ONCE_NOCHECK when reading the stack in imprecise\nmode.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "5d8544e2d0075a5f3c9a2cf27152354d54360da1", "status": "affected", "versionType": "git", "lessThan": "a99a61d9e1bfca2fc37d223a6a185c0eb66aba02" }, { "version": "5d8544e2d0075a5f3c9a2cf27152354d54360da1", "status": "affected", "versionType": "git", "lessThan": "3de277af481ab931fab9e295ad8762692920732a" }, { "version": "5d8544e2d0075a5f3c9a2cf27152354d54360da1", "status": "affected", "versionType": "git", "lessThan": "3a9418d2c93c1c86ce4d0595112d91c7a8e70c2c" }, { "version": "5d8544e2d0075a5f3c9a2cf27152354d54360da1", "status": "affected", "versionType": "git", "lessThan": "324912d6c0c4006711054d389faa2239c1655e1e" }, { "version": "5d8544e2d0075a5f3c9a2cf27152354d54360da1", "status": "affected", "versionType": "git", "lessThan": "17fa90ffba20743c946920fbb0afe160d0ead8c9" }, { "version": "5d8544e2d0075a5f3c9a2cf27152354d54360da1", "status": "affected", "versionType": "git", "lessThan": "76950340cf03b149412fe0d5f0810e52ac1df8cb" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.15", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.15" }, { "version": "5.4.237", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.175", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.103", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.20", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.2.7", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.2.*" }, { "version": "6.3", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }