n the Linux kernel, the following vulnerability has been resolved: md/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid() r5l_flush_stripe_to_raid() will check if the list 'flushing_ios' is empty, and then submit 'flush_bio', however, r5l_log_flush_endio() is clearing the list first and then clear the bio, which will cause null-ptr-deref: T1: submit flush io raid5d handle_active_stripes r5l_flush_stripe_to_raid // list is empty // add 'io_end_ios' to the list bio_init submit_bio // io1 T2: io1 is done r5l_log_flush_endio list_splice_tail_init // clear the list T3: submit new flush io ... r5l_flush_stripe_to_raid // list is empty // add 'io_end_ios' to the list bio_init bio_uninit // clear bio->bi_blkg submit_bio // null-ptr-deref Fix this problem by clearing bio before clearing the list in r5l_log_flush_endio().
Configuration 1 (hide)
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04 Dec 2025, 15:01
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-476 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| References | () https://git.kernel.org/stable/c/0d0bd28c500173bfca78aa840f8f36d261ef1765 - Patch | |
| References | () https://git.kernel.org/stable/c/711fb92606208a8626b785da4f9f23d648a5b6c8 - Patch | |
| References | () https://git.kernel.org/stable/c/7a8b6d93991bf4b72b3f959baea35397c6c8e521 - Patch | |
| References | () https://git.kernel.org/stable/c/e46b2e7be8059d156af8c011dd8d665229b65886 - Patch |
15 Sep 2025, 15:22
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Published : 2025-09-15 15:15
Updated : 2026-01-14 18:16
NVD link : CVE-2023-53210
Mitre link : CVE-2023-53210
CVE.ORG link : CVE-2023-53210
JSON object : View
NULL Pointer Dereference