145 lines
8.5 KiB
JSON
145 lines
8.5 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-2023-53634",
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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": "2025-10-07T15:16:59.657Z",
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"datePublished": "2025-10-07T15:19:36.306Z",
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"dateUpdated": "2026-05-11T19:48:56.832Z"
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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": "2026-05-11T19:48:56.832Z"
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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, arm64: Fixed a BTI error on returning to patched function\n\nWhen BPF_TRAMP_F_CALL_ORIG is set, BPF trampoline uses BLR to jump\nback to the instruction next to call site to call the patched function.\nFor BTI-enabled kernel, the instruction next to call site is usually\nPACIASP, in this case, it's safe to jump back with BLR. But when\nthe call site is not followed by a PACIASP or bti, a BTI exception\nis triggered.\n\nHere is a fault log:\n\n Unhandled 64-bit el1h sync exception on CPU0, ESR 0x0000000034000002 -- BTI\n CPU: 0 PID: 263 Comm: test_progs Tainted: GF\n Hardware name: linux,dummy-virt (DT)\n pstate: 40400805 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=-c)\n pc : bpf_fentry_test1+0xc/0x30\n lr : bpf_trampoline_6442573892_0+0x48/0x1000\n sp : ffff80000c0c3a50\n x29: ffff80000c0c3a90 x28: ffff0000c2e6c080 x27: 0000000000000000\n x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000050\n x23: 0000000000000000 x22: 0000ffffcfd2a7f0 x21: 000000000000000a\n x20: 0000ffffcfd2a7f0 x19: 0000000000000000 x18: 0000000000000000\n x17: 0000000000000000 x16: 0000000000000000 x15: 0000ffffcfd2a7f0\n x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n x11: 0000000000000000 x10: ffff80000914f5e4 x9 : ffff8000082a1528\n x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0101010101010101\n x5 : 0000000000000000 x4 : 00000000fffffff2 x3 : 0000000000000001\n x2 : ffff8001f4b82000 x1 : 0000000000000000 x0 : 0000000000000001\n Kernel panic - not syncing: Unhandled exception\n CPU: 0 PID: 263 Comm: test_progs Tainted: GF\n Hardware name: linux,dummy-virt (DT)\n Call trace:\n dump_backtrace+0xec/0x144\n show_stack+0x24/0x7c\n dump_stack_lvl+0x8c/0xb8\n dump_stack+0x18/0x34\n panic+0x1cc/0x3ec\n __el0_error_handler_common+0x0/0x130\n el1h_64_sync_handler+0x60/0xd0\n el1h_64_sync+0x78/0x7c\n bpf_fentry_test1+0xc/0x30\n bpf_fentry_test1+0xc/0x30\n bpf_prog_test_run_tracing+0xdc/0x2a0\n __sys_bpf+0x438/0x22a0\n __arm64_sys_bpf+0x30/0x54\n invoke_syscall+0x78/0x110\n el0_svc_common.constprop.0+0x6c/0x1d0\n do_el0_svc+0x38/0xe0\n el0_svc+0x30/0xd0\n el0t_64_sync_handler+0x1ac/0x1b0\n el0t_64_sync+0x1a0/0x1a4\n Kernel Offset: disabled\n CPU features: 0x0000,00034c24,f994fdab\n Memory Limit: none\n\nAnd the instruction next to call site of bpf_fentry_test1 is ADD,\nnot PACIASP:\n\n<bpf_fentry_test1>:\n\tbti c\n\tnop\n\tnop\n\tadd w0, w0, #0x1\n\tpaciasp\n\nFor BPF prog, JIT always puts a PACIASP after call site for BTI-enabled\nkernel, so there is no problem. To fix it, replace BLR with RET to bypass\nthe branch target check."
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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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"arch/arm64/net/bpf_jit.h",
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"arch/arm64/net/bpf_jit_comp.c"
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],
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"versions": [
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{
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"version": "efc9909fdce00a827a37609628223cd45bf95d0b",
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"lessThan": "8b9c64942ada229f52fe6f1b537a50f88b3c2673",
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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": "efc9909fdce00a827a37609628223cd45bf95d0b",
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"lessThan": "eabc166919d169e105263974991f52b0351e431a",
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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": "efc9909fdce00a827a37609628223cd45bf95d0b",
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"lessThan": "738a96c4a8c36950803fdd27e7c30aca92dccefd",
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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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"arch/arm64/net/bpf_jit.h",
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"arch/arm64/net/bpf_jit_comp.c"
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],
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"versions": [
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{
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"version": "6.0",
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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": "6.0",
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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": "6.1.25",
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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": "6.2.12",
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"lessThanOrEqual": "6.2.*",
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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": "6.3",
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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": "6.0",
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"versionEndExcluding": "6.1.25"
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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": "6.0",
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"versionEndExcluding": "6.2.12"
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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": "6.0",
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"versionEndExcluding": "6.3"
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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/8b9c64942ada229f52fe6f1b537a50f88b3c2673"
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},
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{
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"url": "https://git.kernel.org/stable/c/eabc166919d169e105263974991f52b0351e431a"
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},
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{
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"url": "https://git.kernel.org/stable/c/738a96c4a8c36950803fdd27e7c30aca92dccefd"
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}
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],
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"title": "bpf, arm64: Fixed a BTI error on returning to patched function",
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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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} |