mirror of
https://github.com/CVEProject/cvelist.git
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102 lines
5.2 KiB
JSON
102 lines
5.2 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-2022-48707",
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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\ncxl/region: Fix null pointer dereference for resetting decoder\n\nNot all decoders have a reset callback.\n\nThe CXL specification allows a host bridge with a single root port to\nhave no explicit HDM decoders. Currently the region driver assumes there\nare none. As such the CXL core creates a special pass through decoder\ninstance without a commit/reset callback.\n\nPrior to this patch, the ->reset() callback was called unconditionally when\ncalling cxl_region_decode_reset. Thus a configuration with 1 Host Bridge,\n1 Root Port, and one directly attached CXL type 3 device or multiple CXL\ntype 3 devices attached to downstream ports of a switch can cause a null\npointer dereference.\n\nBefore the fix, a kernel crash was observed when we destroy the region, and\na pass through decoder is reset.\n\nThe issue can be reproduced as below,\n 1) create a region with a CXL setup which includes a HB with a\n single root port under which a memdev is attached directly.\n 2) destroy the region with cxl destroy-region regionX -f."
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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": "176baefb2eb5",
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"version_value": "a04c7d062b53"
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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": "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": "6.1.12",
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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",
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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/a04c7d062b537ff787d00da95bdfe343260d4beb",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/a04c7d062b537ff787d00da95bdfe343260d4beb"
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},
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{
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"url": "https://git.kernel.org/stable/c/4fa4302d6dc7de7e8e74dc7405611a2efb4bf54b",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/4fa4302d6dc7de7e8e74dc7405611a2efb4bf54b"
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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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} |