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This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
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History
Thu, 19 Dec 2024 12:30:00 +0000
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Thu, 19 Dec 2024 12:15:00 +0000
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| Title | ubifs: ubifs_symlink: Fix memleak of inode->i_link in error path | kernel: ubifs: ubifs_symlink: Fix memleak of inode->i_link in error path |
| Metrics |
ssvc
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Thu, 19 Dec 2024 11:30:00 +0000
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| Description | In the Linux kernel, the following vulnerability has been resolved: ubifs: ubifs_symlink: Fix memleak of inode->i_link in error path For error handling path in ubifs_symlink(), inode will be marked as bad first, then iput() is invoked. If inode->i_link is initialized by fscrypt_encrypt_symlink() in encryption scenario, inode->i_link won't be freed by callchain ubifs_free_inode -> fscrypt_free_inode in error handling path, because make_bad_inode() has changed 'inode->i_mode' as 'S_IFREG'. Following kmemleak is easy to be reproduced by injecting error in ubifs_jnl_update() when doing symlink in encryption scenario: unreferenced object 0xffff888103da3d98 (size 8): comm "ln", pid 1692, jiffies 4294914701 (age 12.045s) backtrace: kmemdup+0x32/0x70 __fscrypt_encrypt_symlink+0xed/0x1c0 ubifs_symlink+0x210/0x300 [ubifs] vfs_symlink+0x216/0x360 do_symlinkat+0x11a/0x190 do_syscall_64+0x3b/0xe0 There are two ways fixing it: 1. Remove make_bad_inode() in error handling path. We can do that because ubifs_evict_inode() will do same processes for good symlink inode and bad symlink inode, for inode->i_nlink checking is before is_bad_inode(). 2. Free inode->i_link before marking inode bad. Method 2 is picked, it has less influence, personally, I think. | This CVE ID has been rejected or withdrawn by its CVE Numbering Authority. |
Thu, 10 Oct 2024 11:45:00 +0000
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Thu, 26 Sep 2024 19:15:00 +0000
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| Weaknesses | CWE-401 |
MITRE
Status: REJECTED
Assigner: Linux
Published: 2024-05-01T05:20:04.669Z
Updated: 2024-12-19T11:17:20.490Z
Reserved: 2024-02-19T14:20:24.202Z
Link: CVE-2024-26972
Vulnrichment
Updated:
NVD
Status : Rejected
Published: 2024-05-01T06:15:13.597
Modified: 2024-12-19T12:15:06.507
Link: CVE-2024-26972
Redhat