mirror of
https://github.com/CVEProject/cvelist.git
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113 lines
8.0 KiB
JSON
113 lines
8.0 KiB
JSON
{
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"data_version": "4.0",
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"data_type": "CVE",
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"data_format": "MITRE",
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"CVE_data_meta": {
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"ID": "CVE-2022-48940",
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"ASSIGNER": "cve@kernel.org",
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"STATE": "PUBLIC"
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},
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"description": {
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"description_data": [
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{
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"lang": "eng",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix crash due to incorrect copy_map_value\n\nWhen both bpf_spin_lock and bpf_timer are present in a BPF map value,\ncopy_map_value needs to skirt both objects when copying a value into and\nout of the map. However, the current code does not set both s_off and\nt_off in copy_map_value, which leads to a crash when e.g. bpf_spin_lock\nis placed in map value with bpf_timer, as bpf_map_update_elem call will\nbe able to overwrite the other timer object.\n\nWhen the issue is not fixed, an overwriting can produce the following\nsplat:\n\n[root@(none) bpf]# ./test_progs -t timer_crash\n[ 15.930339] bpf_testmod: loading out-of-tree module taints kernel.\n[ 16.037849] ==================================================================\n[ 16.038458] BUG: KASAN: user-memory-access in __pv_queued_spin_lock_slowpath+0x32b/0x520\n[ 16.038944] Write of size 8 at addr 0000000000043ec0 by task test_progs/325\n[ 16.039399]\n[ 16.039514] CPU: 0 PID: 325 Comm: test_progs Tainted: G OE 5.16.0+ #278\n[ 16.039983] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ArchLinux 1.15.0-1 04/01/2014\n[ 16.040485] Call Trace:\n[ 16.040645] <TASK>\n[ 16.040805] dump_stack_lvl+0x59/0x73\n[ 16.041069] ? __pv_queued_spin_lock_slowpath+0x32b/0x520\n[ 16.041427] kasan_report.cold+0x116/0x11b\n[ 16.041673] ? __pv_queued_spin_lock_slowpath+0x32b/0x520\n[ 16.042040] __pv_queued_spin_lock_slowpath+0x32b/0x520\n[ 16.042328] ? memcpy+0x39/0x60\n[ 16.042552] ? pv_hash+0xd0/0xd0\n[ 16.042785] ? lockdep_hardirqs_off+0x95/0xd0\n[ 16.043079] __bpf_spin_lock_irqsave+0xdf/0xf0\n[ 16.043366] ? bpf_get_current_comm+0x50/0x50\n[ 16.043608] ? jhash+0x11a/0x270\n[ 16.043848] bpf_timer_cancel+0x34/0xe0\n[ 16.044119] bpf_prog_c4ea1c0f7449940d_sys_enter+0x7c/0x81\n[ 16.044500] bpf_trampoline_6442477838_0+0x36/0x1000\n[ 16.044836] __x64_sys_nanosleep+0x5/0x140\n[ 16.045119] do_syscall_64+0x59/0x80\n[ 16.045377] ? lock_is_held_type+0xe4/0x140\n[ 16.045670] ? irqentry_exit_to_user_mode+0xa/0x40\n[ 16.046001] ? mark_held_locks+0x24/0x90\n[ 16.046287] ? asm_exc_page_fault+0x1e/0x30\n[ 16.046569] ? asm_exc_page_fault+0x8/0x30\n[ 16.046851] ? lockdep_hardirqs_on+0x7e/0x100\n[ 16.047137] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 16.047405] RIP: 0033:0x7f9e4831718d\n[ 16.047602] Code: b4 0c 00 0f 05 eb a9 66 0f 1f 44 00 00 f3 0f 1e fa 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 b3 6c 0c 00 f7 d8 64 89 01 48\n[ 16.048764] RSP: 002b:00007fff488086b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000023\n[ 16.049275] RAX: ffffffffffffffda RBX: 00007f9e48683740 RCX: 00007f9e4831718d\n[ 16.049747] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fff488086d0\n[ 16.050225] RBP: 00007fff488086f0 R08: 00007fff488085d7 R09: 00007f9e4cb594a0\n[ 16.050648] R10: 0000000000000000 R11: 0000000000000206 R12: 00007f9e484cde30\n[ 16.051124] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\n[ 16.051608] </TASK>\n[ 16.051762] =================================================================="
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}
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]
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "n/a"
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}
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]
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}
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]
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"vendor_name": "Linux",
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"product": {
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"product_data": [
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{
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"product_name": "Linux",
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"version": {
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"version_data": [
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{
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"version_affected": "<",
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"version_name": "68134668c17f",
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"version_value": "719d1c2524c8"
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},
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{
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"version_value": "not down converted",
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"x_cve_json_5_version_data": {
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"versions": [
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{
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"version": "5.15",
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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": "5.15",
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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": "5.15.26",
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"lessThanOrEqual": "5.15.*",
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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": "5.16.12",
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"lessThanOrEqual": "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": "5.17",
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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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"defaultStatus": "affected"
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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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}
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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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"reference_data": [
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{
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"url": "https://git.kernel.org/stable/c/719d1c2524c89ada78c4c9202641c1d9e942a322",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/719d1c2524c89ada78c4c9202641c1d9e942a322"
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},
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{
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"url": "https://git.kernel.org/stable/c/eca9bd215d2233de79d930fa97aefbce03247a98",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/eca9bd215d2233de79d930fa97aefbce03247a98"
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},
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{
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"url": "https://git.kernel.org/stable/c/a8abb0c3dc1e28454851a00f8b7333d9695d566c",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/a8abb0c3dc1e28454851a00f8b7333d9695d566c"
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}
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]
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},
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"generator": {
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"engine": "bippy-9e1c9544281a"
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}
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} |