mirror of
https://github.com/CVEProject/cvelist.git
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125 lines
7.4 KiB
JSON
125 lines
7.4 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-2021-47082",
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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\ntun: avoid double free in tun_free_netdev\n\nAvoid double free in tun_free_netdev() by moving the\ndev->tstats and tun->security allocs to a new ndo_init routine\n(tun_net_init()) that will be called by register_netdevice().\nndo_init is paired with the desctructor (tun_free_netdev()),\nso if there's an error in register_netdevice() the destructor\nwill handle the frees.\n\nBUG: KASAN: double-free or invalid-free in selinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605\n\nCPU: 0 PID: 25750 Comm: syz-executor416 Not tainted 5.16.0-rc2-syzk #1\nHardware name: Red Hat KVM, BIOS\nCall Trace:\n<TASK>\n__dump_stack lib/dump_stack.c:88 [inline]\ndump_stack_lvl+0x89/0xb5 lib/dump_stack.c:106\nprint_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:247\nkasan_report_invalid_free+0x55/0x80 mm/kasan/report.c:372\n____kasan_slab_free mm/kasan/common.c:346 [inline]\n__kasan_slab_free+0x107/0x120 mm/kasan/common.c:374\nkasan_slab_free include/linux/kasan.h:235 [inline]\nslab_free_hook mm/slub.c:1723 [inline]\nslab_free_freelist_hook mm/slub.c:1749 [inline]\nslab_free mm/slub.c:3513 [inline]\nkfree+0xac/0x2d0 mm/slub.c:4561\nselinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605\nsecurity_tun_dev_free_security+0x4f/0x90 security/security.c:2342\ntun_free_netdev+0xe6/0x150 drivers/net/tun.c:2215\nnetdev_run_todo+0x4df/0x840 net/core/dev.c:10627\nrtnl_unlock+0x13/0x20 net/core/rtnetlink.c:112\n__tun_chr_ioctl+0x80c/0x2870 drivers/net/tun.c:3302\ntun_chr_ioctl+0x2f/0x40 drivers/net/tun.c:3311\nvfs_ioctl fs/ioctl.c:51 [inline]\n__do_sys_ioctl fs/ioctl.c:874 [inline]\n__se_sys_ioctl fs/ioctl.c:860 [inline]\n__x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:860\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x3a/0x80 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x44/0xae"
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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": "1da177e4c3f4",
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"version_value": "8eb43d635950"
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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": "4.19.280",
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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": "5.4.240",
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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": "5.10.136",
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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": "5.15.12",
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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",
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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/8eb43d635950e27c29f1e9e49a23b31637f37757",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/8eb43d635950e27c29f1e9e49a23b31637f37757"
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},
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{
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"url": "https://git.kernel.org/stable/c/0c0e566f0387490d16f166808c72e9c772027681",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/0c0e566f0387490d16f166808c72e9c772027681"
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},
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{
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"url": "https://git.kernel.org/stable/c/a01a4e9f5dc93335c716fa4023b1901956e8c904",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/a01a4e9f5dc93335c716fa4023b1901956e8c904"
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},
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{
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"url": "https://git.kernel.org/stable/c/3cb5ae77799e8ed6ec3fec0b6b4cd07f01650cc5",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/3cb5ae77799e8ed6ec3fec0b6b4cd07f01650cc5"
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},
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{
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"url": "https://git.kernel.org/stable/c/158b515f703e75e7d68289bf4d98c664e1d632df",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/158b515f703e75e7d68289bf4d98c664e1d632df"
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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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} |