CVE-2023-53294 Affecting perf package, versions <0:6.1.29-47.49.amzn2023
Threat Intelligence
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Test your applications- Snyk IDSNYK-AMZN2023-PERF-13551904
- published15 Oct 2025
- disclosed16 Sept 2025
Introduced: 16 Sep 2025
NewCVE-2023-53294 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 perf to version 0:6.1.29-47.49.amzn2023 or higher.
This issue was patched in ALAS2023-2023-184.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
fs/ntfs3: Fix null-ptr-deref on inode->i_op in ntfs_lookup()
Syzbot reported a null-ptr-deref bug:
ntfs3: loop0: Different NTFS' sector size (1024) and media sector size (512) ntfs3: loop0: Mark volume as dirty due to NTFS errors general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] RIP: 0010:d_flags_for_inode fs/dcache.c:1980 [inline] RIP: 0010:__d_add+0x5ce/0x800 fs/dcache.c:2796 Call Trace: <TASK> d_splice_alias+0x122/0x3b0 fs/dcache.c:3191 lookup_open fs/namei.c:3391 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x10e6/0x2df0 fs/namei.c:3688 do_filp_open+0x264/0x4f0 fs/namei.c:3718 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_open fs/open.c:1334 [inline] __se_sys_open fs/open.c:1330 [inline] __x64_sys_open+0x221/0x270 fs/open.c:1330 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd
If the MFT record of ntfs inode is not a base record, inode->i_op can be NULL. And a null-ptr-deref may happen:
ntfs_lookup() dir_search_u() # inode->i_op is set to NULL d_splice_alias() __d_add() d_flags_for_inode() # inode->i_op->get_link null-ptr-deref
Fix this by adding a Check on inode->i_op before calling the d_splice_alias() function.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-53294
- https://git.kernel.org/stable/c/254e69f284d7270e0abdc023ee53b71401c3ba0c
- https://git.kernel.org/stable/c/2ba22cbc6a1cf4b58195adbee0b80262e53992d3
- https://git.kernel.org/stable/c/d69d5e2a81df94534bdb468bcdd26060fcb7191a
- https://git.kernel.org/stable/c/e78240bc4b94fc42854d65e657bb998100cc8e1b
- https://git.kernel.org/stable/c/f8d9e062a695a3665c4635c4f216a75912687598