mirror of
https://github.com/CVEProject/cvelist.git
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102 lines
5.4 KiB
JSON
102 lines
5.4 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-2024-26972",
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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\nubifs: ubifs_symlink: Fix memleak of inode->i_link in error path\n\nFor error handling path in ubifs_symlink(), inode will be marked as\nbad first, then iput() is invoked. If inode->i_link is initialized by\nfscrypt_encrypt_symlink() in encryption scenario, inode->i_link won't\nbe freed by callchain ubifs_free_inode -> fscrypt_free_inode in error\nhandling path, because make_bad_inode() has changed 'inode->i_mode' as\n'S_IFREG'.\nFollowing kmemleak is easy to be reproduced by injecting error in\nubifs_jnl_update() when doing symlink in encryption scenario:\n unreferenced object 0xffff888103da3d98 (size 8):\n comm \"ln\", pid 1692, jiffies 4294914701 (age 12.045s)\n backtrace:\n kmemdup+0x32/0x70\n __fscrypt_encrypt_symlink+0xed/0x1c0\n ubifs_symlink+0x210/0x300 [ubifs]\n vfs_symlink+0x216/0x360\n do_symlinkat+0x11a/0x190\n do_syscall_64+0x3b/0xe0\nThere are two ways fixing it:\n 1. Remove make_bad_inode() in error handling path. We can do that\n because ubifs_evict_inode() will do same processes for good\n symlink inode and bad symlink inode, for inode->i_nlink checking\n is before is_bad_inode().\n 2. Free inode->i_link before marking inode bad.\nMethod 2 is picked, it has less influence, personally, I think."
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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": "2c58d548f570",
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"version_value": "62b5ae00c2b8"
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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": "5.2",
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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": "5.2",
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"status": "unaffected",
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"versionType": "custom"
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},
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{
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"version": "6.8.3",
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"lessThanOrEqual": "6.8.*",
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"status": "unaffected",
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"versionType": "custom"
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},
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{
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"version": "6.9",
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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/62b5ae00c2b835639002ce898ccb5d82c51073ae",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/62b5ae00c2b835639002ce898ccb5d82c51073ae"
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},
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{
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"url": "https://git.kernel.org/stable/c/6379b44cdcd67f5f5d986b73953e99700591edfa",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/6379b44cdcd67f5f5d986b73953e99700591edfa"
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}
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]
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},
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"generator": {
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"engine": "bippy-a5840b7849dd"
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}
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} |