mirror of
https://github.com/CVEProject/cvelist.git
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113 lines
6.3 KiB
JSON
113 lines
6.3 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-2024-39296",
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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\nbonding: fix oops during rmmod\n\n\"rmmod bonding\" causes an oops ever since commit cc317ea3d927 (\"bonding:\nremove redundant NULL check in debugfs function\"). Here are the relevant\nfunctions being called:\n\nbonding_exit()\n bond_destroy_debugfs()\n debugfs_remove_recursive(bonding_debug_root);\n bonding_debug_root = NULL; <--------- SET TO NULL HERE\n bond_netlink_fini()\n rtnl_link_unregister()\n __rtnl_link_unregister()\n unregister_netdevice_many_notify()\n bond_uninit()\n bond_debug_unregister()\n (commit removed check for bonding_debug_root == NULL)\n debugfs_remove()\n simple_recursive_removal()\n down_write() -> OOPS\n\nHowever, reverting the bad commit does not solve the problem completely\nbecause the original code contains a race that could cause the same\noops, although it was much less likely to be triggered unintentionally:\n\nCPU1\n rmmod bonding\n bonding_exit()\n bond_destroy_debugfs()\n debugfs_remove_recursive(bonding_debug_root);\n\nCPU2\n echo -bond0 > /sys/class/net/bonding_masters\n bond_uninit()\n bond_debug_unregister()\n if (!bonding_debug_root)\n\nCPU1\n bonding_debug_root = NULL;\n\nSo do NOT revert the bad commit (since the removed checks were racy\nanyway), and instead change the order of actions taken during module\nremoval. The same oops can also happen if there is an error during\nmodule init, so apply the same fix there."
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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": "cc317ea3d927",
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"version_value": "f07224c16678"
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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": "6.6",
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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": "6.6",
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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": "6.6.34",
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"lessThanOrEqual": "6.6.*",
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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": "6.9.5",
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"lessThanOrEqual": "6.9.*",
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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": "6.10",
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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/f07224c16678a8af54ddc059b3d2d51885d7f35e",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/f07224c16678a8af54ddc059b3d2d51885d7f35e"
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},
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{
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"url": "https://git.kernel.org/stable/c/cf48aee81103ca06d09d73d33fb72f1191069aa6",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/cf48aee81103ca06d09d73d33fb72f1191069aa6"
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},
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{
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"url": "https://git.kernel.org/stable/c/a45835a0bb6ef7d5ddbc0714dd760de979cb6ece",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/a45835a0bb6ef7d5ddbc0714dd760de979cb6ece"
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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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} |