mirror of
https://github.com/CVEProject/cvelist.git
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146 lines
8.6 KiB
JSON
146 lines
8.6 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-2022-48969",
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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\nxen-netfront: Fix NULL sring after live migration\n\nA NAPI is setup for each network sring to poll data to kernel\nThe sring with source host is destroyed before live migration and\nnew sring with target host is setup after live migration.\nThe NAPI for the old sring is not deleted until setup new sring\nwith target host after migration. With busy_poll/busy_read enabled,\nthe NAPI can be polled before got deleted when resume VM.\n\nBUG: unable to handle kernel NULL pointer dereference at\n0000000000000008\nIP: xennet_poll+0xae/0xd20\nPGD 0 P4D 0\nOops: 0000 [#1] SMP PTI\nCall Trace:\n finish_task_switch+0x71/0x230\n timerqueue_del+0x1d/0x40\n hrtimer_try_to_cancel+0xb5/0x110\n xennet_alloc_rx_buffers+0x2a0/0x2a0\n napi_busy_loop+0xdb/0x270\n sock_poll+0x87/0x90\n do_sys_poll+0x26f/0x580\n tracing_map_insert+0x1d4/0x2f0\n event_hist_trigger+0x14a/0x260\n\n finish_task_switch+0x71/0x230\n __schedule+0x256/0x890\n recalc_sigpending+0x1b/0x50\n xen_sched_clock+0x15/0x20\n __rb_reserve_next+0x12d/0x140\n ring_buffer_lock_reserve+0x123/0x3d0\n event_triggers_call+0x87/0xb0\n trace_event_buffer_commit+0x1c4/0x210\n xen_clocksource_get_cycles+0x15/0x20\n ktime_get_ts64+0x51/0xf0\n SyS_ppoll+0x160/0x1a0\n SyS_ppoll+0x160/0x1a0\n do_syscall_64+0x73/0x130\n entry_SYSCALL_64_after_hwframe+0x41/0xa6\n...\nRIP: xennet_poll+0xae/0xd20 RSP: ffffb4f041933900\nCR2: 0000000000000008\n---[ end trace f8601785b354351c ]---\n\nxen frontend should remove the NAPIs for the old srings before live\nmigration as the bond srings are destroyed\n\nThere is a tiny window between the srings are set to NULL and\nthe NAPIs are disabled, It is safe as the NAPI threads are still\nfrozen at that time"
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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": "4ec2411980d0",
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"version_value": "99859947517e"
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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": "2.6.24",
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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": "2.6.24",
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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": "4.19.269",
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"lessThanOrEqual": "4.19.*",
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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": "5.4.227",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.159",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.83",
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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": "6.0.13",
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"lessThanOrEqual": "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",
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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/99859947517e446058ad7243ee81d2f9801fa3dd",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/99859947517e446058ad7243ee81d2f9801fa3dd"
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},
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{
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"url": "https://git.kernel.org/stable/c/ed773dd798bf720756d20021b8d8a4a3d7184bda",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/ed773dd798bf720756d20021b8d8a4a3d7184bda"
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},
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{
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"url": "https://git.kernel.org/stable/c/e6860c889f4ad50b6ab696f5ea154295d72cf27a",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/e6860c889f4ad50b6ab696f5ea154295d72cf27a"
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},
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{
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"url": "https://git.kernel.org/stable/c/e6e897d4fe2f89c0bd94600a40bedf5e6e75e050",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/e6e897d4fe2f89c0bd94600a40bedf5e6e75e050"
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},
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{
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"url": "https://git.kernel.org/stable/c/f2dd60fd3fe98bd36a91b0c6e10bfe9d66258f84",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/f2dd60fd3fe98bd36a91b0c6e10bfe9d66258f84"
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},
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{
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"url": "https://git.kernel.org/stable/c/d50b7914fae04d840ce36491d22133070b18cca9",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/d50b7914fae04d840ce36491d22133070b18cca9"
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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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} |