{ "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-2024-43910", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-43910", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-08-26T10:11:14.105Z", "updatedAt": "2026-08-05T11:37:04.139Z", "importedAt": "2026-10-24T01:57:16.009Z", "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": "bpf: add missing check_func_arg_reg_off() to prevent out-of-bounds memory accesses", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: add missing check_func_arg_reg_off() to prevent out-of-bounds memory accesses\n\nCurrently, it's possible to pass in a modified CONST_PTR_TO_DYNPTR to\na global function as an argument. The adverse effects of this is that\nBPF helpers can continue to make use of this modified\nCONST_PTR_TO_DYNPTR from within the context of the global function,\nwhich can unintentionally result in out-of-bounds memory accesses and\ntherefore compromise overall system stability i.e.\n\n[ 244.157771] BUG: KASAN: slab-out-of-bounds in bpf_dynptr_data+0x137/0x140\n[ 244.161345] Read of size 8 at addr ffff88810914be68 by task test_progs/302\n[ 244.167151] CPU: 0 PID: 302 Comm: test_progs Tainted: G O E 6.10.0-rc3-00131-g66b586715063 #533\n[ 244.174318] Call Trace:\n[ 244.175787] \n[ 244.177356] dump_stack_lvl+0x66/0xa0\n[ 244.179531] print_report+0xce/0x670\n[ 244.182314] ? __virt_addr_valid+0x200/0x3e0\n[ 244.184908] kasan_report+0xd7/0x110\n[ 244.187408] ? bpf_dynptr_data+0x137/0x140\n[ 244.189714] ? bpf_dynptr_data+0x137/0x140\n[ 244.192020] bpf_dynptr_data+0x137/0x140\n[ 244.194264] bpf_prog_b02a02fdd2bdc5fa_global_call_bpf_dynptr_data+0x22/0x26\n[ 244.198044] bpf_prog_b0fe7b9d7dc3abde_callback_adjust_bpf_dynptr_reg_off+0x1f/0x23\n[ 244.202136] bpf_user_ringbuf_drain+0x2c7/0x570\n[ 244.204744] ? 0xffffffffc0009e58\n[ 244.206593] ? __pfx_bpf_user_ringbuf_drain+0x10/0x10\n[ 244.209795] bpf_prog_33ab33f6a804ba2d_user_ringbuf_callback_const_ptr_to_dynptr_reg_off+0x47/0x4b\n[ 244.215922] bpf_trampoline_6442502480+0x43/0xe3\n[ 244.218691] __x64_sys_prlimit64+0x9/0xf0\n[ 244.220912] do_syscall_64+0xc1/0x1d0\n[ 244.223043] entry_SYSCALL_64_after_hwframe+0x77/0x7f\n[ 244.226458] RIP: 0033:0x7ffa3eb8f059\n[ 244.228582] Code: 08 89 e8 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8f 1d 0d 00 f7 d8 64 89 01 48\n[ 244.241307] RSP: 002b:00007ffa3e9c6eb8 EFLAGS: 00000206 ORIG_RAX: 000000000000012e\n[ 244.246474] RAX: ffffffffffffffda RBX: 00007ffa3e9c7cdc RCX: 00007ffa3eb8f059\n[ 244.250478] RDX: 00007ffa3eb162b4 RSI: 0000000000000000 RDI: 00007ffa3e9c7fb0\n[ 244.255396] RBP: 00007ffa3e9c6ed0 R08: 00007ffa3e9c76c0 R09: 0000000000000000\n[ 244.260195] R10: 0000000000000000 R11: 0000000000000206 R12: ffffffffffffff80\n[ 244.264201] R13: 000000000000001c R14: 00007ffc5d6b4260 R15: 00007ffa3e1c7000\n[ 244.268303] \n\nAdd a check_func_arg_reg_off() to the path in which the BPF verifier\nverifies the arguments of global function arguments, specifically\nthose which take an argument of type ARG_PTR_TO_DYNPTR |\nMEM_RDONLY. Also, process_dynptr_func() doesn't appear to perform any\nexplicit and strict type matching on the supplied register type, so\nlet's also enforce that a register either type PTR_TO_STACK or\nCONST_PTR_TO_DYNPTR is by the caller.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "a64bfe618665ea9c722f922cba8c6e3234eac5ac", "status": "affected", "versionType": "git", "lessThan": "13663a7c644bf1dedaf461d07252db5d76c8759a" }, { "version": "a64bfe618665ea9c722f922cba8c6e3234eac5ac", "status": "affected", "versionType": "git", "lessThan": "ec2b9a5e11e51fea1bb04c1e7e471952e887e874" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.8", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.8" }, { "version": "6.10.5", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.10.*" }, { "version": "6.11", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }