CVE-2023-53210md/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid()
- 5.5MediumCVSS base score
- 0.16%Exploitation in 30 daysEPSS · top 95% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In 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().
Timeline
ID reserved
By Linux
Published
- 8 months later
· 8 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.16% · top 95% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 0dd00cba99c352dc9afd62979f350d808c215cb9 – < 711fb92606208a8626b785da4f9f23d648a5b6c8
- affected 0dd00cba99c352dc9afd62979f350d808c215cb9 – < 7a8b6d93991bf4b72b3f959baea35397c6c8e521
- affected 0dd00cba99c352dc9afd62979f350d808c215cb9 – < e46b2e7be8059d156af8c011dd8d665229b65886
- affected 0dd00cba99c352dc9afd62979f350d808c215cb9 – < 0d0bd28c500173bfca78aa840f8f36d261ef1765
- affected 5.18
- unaffected < 5.18
- unaffected 6.1.53 – ≤ 6.1.*
- unaffected 6.4.16 – ≤ 6.4.*
- unaffected 6.5.3 – ≤ 6.5.*
- unaffected 6.6 – ≤ *
References
References4
- https://git.kernel.org/stable/c/711fb92606208a8626b785da4f9f23d648a5b6c8 (opens in a new tab)
- https://git.kernel.org/stable/c/7a8b6d93991bf4b72b3f959baea35397c6c8e521 (opens in a new tab)
- https://git.kernel.org/stable/c/e46b2e7be8059d156af8c011dd8d665229b65886 (opens in a new tab)
- https://git.kernel.org/stable/c/0d0bd28c500173bfca78aa840f8f36d261ef1765 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-59873 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-53210)Record last updated .