7.1

CVE-2024-53155

In the Linux kernel, the following vulnerability has been resolved:

ocfs2: fix uninitialized value in ocfs2_file_read_iter()

Syzbot has reported the following KMSAN splat:

BUG: KMSAN: uninit-value in ocfs2_file_read_iter+0x9a4/0xf80
 ocfs2_file_read_iter+0x9a4/0xf80
 __io_read+0x8d4/0x20f0
 io_read+0x3e/0xf0
 io_issue_sqe+0x42b/0x22c0
 io_wq_submit_work+0xaf9/0xdc0
 io_worker_handle_work+0xd13/0x2110
 io_wq_worker+0x447/0x1410
 ret_from_fork+0x6f/0x90
 ret_from_fork_asm+0x1a/0x30

Uninit was created at:
 __alloc_pages_noprof+0x9a7/0xe00
 alloc_pages_mpol_noprof+0x299/0x990
 alloc_pages_noprof+0x1bf/0x1e0
 allocate_slab+0x33a/0x1250
 ___slab_alloc+0x12ef/0x35e0
 kmem_cache_alloc_bulk_noprof+0x486/0x1330
 __io_alloc_req_refill+0x84/0x560
 io_submit_sqes+0x172f/0x2f30
 __se_sys_io_uring_enter+0x406/0x41c0
 __x64_sys_io_uring_enter+0x11f/0x1a0
 x64_sys_call+0x2b54/0x3ba0
 do_syscall_64+0xcd/0x1e0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Since an instance of 'struct kiocb' may be passed from the block layer
with 'private' field uninitialized, introduce 'ocfs2_iocb_init_rw_locked()'
and use it from where 'ocfs2_dio_end_io()' might take care, i.e. in
'ocfs2_file_read_iter()' and 'ocfs2_file_write_iter()'.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.22 < 4.19.325
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.287
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.231
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.174
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.120
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.64
Linux ≫ Linux Kernel Version >= 6.7 < 6.11.11
Linux ≫ Linux Kernel Version >= 6.12 < 6.12.2
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.03% 0.092
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.1 1.8 5.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 7.1 1.8 5.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE-908 Use of Uninitialized Resource

The product uses or accesses a resource that has not been initialized.