143 lines
7.5 KiB
JSON
143 lines
7.5 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2023-54247",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-12-30T12:06:44.513Z",
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"datePublished": "2025-12-30T12:15:45.395Z",
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"dateUpdated": "2026-05-11T19:58:18.212Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T19:58:18.212Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Silence a warning in btf_type_id_size()\n\nsyzbot reported a warning in [1] with the following stacktrace:\n WARNING: CPU: 0 PID: 5005 at kernel/bpf/btf.c:1988 btf_type_id_size+0x2d9/0x9d0 kernel/bpf/btf.c:1988\n ...\n RIP: 0010:btf_type_id_size+0x2d9/0x9d0 kernel/bpf/btf.c:1988\n ...\n Call Trace:\n <TASK>\n map_check_btf kernel/bpf/syscall.c:1024 [inline]\n map_create+0x1157/0x1860 kernel/bpf/syscall.c:1198\n __sys_bpf+0x127f/0x5420 kernel/bpf/syscall.c:5040\n __do_sys_bpf kernel/bpf/syscall.c:5162 [inline]\n __se_sys_bpf kernel/bpf/syscall.c:5160 [inline]\n __x64_sys_bpf+0x79/0xc0 kernel/bpf/syscall.c:5160\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nWith the following btf\n [1] DECL_TAG 'a' type_id=4 component_idx=-1\n [2] PTR '(anon)' type_id=0\n [3] TYPE_TAG 'a' type_id=2\n [4] VAR 'a' type_id=3, linkage=static\nand when the bpf_attr.btf_key_type_id = 1 (DECL_TAG),\nthe following WARN_ON_ONCE in btf_type_id_size() is triggered:\n if (WARN_ON_ONCE(!btf_type_is_modifier(size_type) &&\n !btf_type_is_var(size_type)))\n return NULL;\n\nNote that 'return NULL' is the correct behavior as we don't want\na DECL_TAG type to be used as a btf_{key,value}_type_id even\nfor the case like 'DECL_TAG -> STRUCT'. So there\nis no correctness issue here, we just want to silence warning.\n\nTo silence the warning, I added DECL_TAG as one of kinds in\nbtf_type_nosize() which will cause btf_type_id_size() returning\nNULL earlier without the warning.\n\n [1] https://lore.kernel.org/bpf/000000000000e0df8d05fc75ba86@google.com/"
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/bpf/btf.c"
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],
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"versions": [
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{
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"version": "b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef",
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"lessThan": "61f4bd46a03a81865aca3bcbad2f7b7032fb3160",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef",
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"lessThan": "7c4f5ab63e7962812505cbd38cc765168a223acb",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b5ea834dde6b6e7f75e51d5f66dac8cd7c97b5ef",
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"lessThan": "e6c2f594ed961273479505b42040782820190305",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/bpf/btf.c"
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],
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"versions": [
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{
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"version": "5.16",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.16",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.110",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.4.7",
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"lessThanOrEqual": "6.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.5",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
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"versionEndExcluding": "6.1.110"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
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"versionEndExcluding": "6.4.7"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.16",
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"versionEndExcluding": "6.5"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/61f4bd46a03a81865aca3bcbad2f7b7032fb3160"
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},
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{
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"url": "https://git.kernel.org/stable/c/7c4f5ab63e7962812505cbd38cc765168a223acb"
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},
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{
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"url": "https://git.kernel.org/stable/c/e6c2f594ed961273479505b42040782820190305"
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}
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],
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"title": "bpf: Silence a warning in btf_type_id_size()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |