CVE-2023-53777
- Source
- https://cve.org/CVERecord?id=CVE-2023-53777
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53777.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-53777
- Downstream
- Related
- Published
- 2025-12-09T00:00:32.947Z
- Modified
- 2026-03-23T05:13:03.913859761Z
- Summary
- erofs: kill hooked chains to avoid loops on deduplicated compressed images
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
erofs: kill hooked chains to avoid loops on deduplicated compressed images
After heavily stressing EROFS with several images which include a hand-crafted image of repeated patterns for more than 46 days, I found two chains could be linked with each other almost simultaneously and form a loop so that the entire loop won't be submitted. As a consequence, the corresponding file pages will remain locked forever.
It can be only observed on data-deduplicated compressed images. For example, consider two chains with five pclusters in total: Chain 1: 2->3->4->5 -- The tail pcluster is 5; Chain 2: 5->1->2 -- The tail pcluster is 2.
Chain 2 could link to Chain 1 with pcluster 5; and Chain 1 could link to Chain 2 at the same time with pcluster 2.
Since hooked chains are all linked locklessly now, I have no idea how to simply avoid the race. Instead, let's avoid hooked chains completely until I could work out a proper way to fix this and end users finally tell us that it's needed to add it back.
Actually, this optimization can be found with multi-threaded workloads (especially even more often on deduplicated compressed images), yet I'm not sure about the overall system impacts of not having this compared with implementation complexity.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53777.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/10c2b98a40d9044a3e97f4697ca6213bad7e19c2
- https://git.kernel.org/stable/c/967c28b23f6c89bb8eef6a046ea88afe0d7c1029
- https://git.kernel.org/stable/c/b5b0d52f00e4bacb0ebdf47cd7016b0485fffad2
- https://git.kernel.org/stable/c/d3b39ea24835ac03da1a30f93ae7c05d55a40191
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53777.json
- https://nvd.nist.gov/vuln/detail/CVE-2023-53777
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced267f2492c8f71dac44399988b510f9bf6b074a51Fixedd3b39ea24835ac03da1a30f93ae7c05d55a40191Fixedb5b0d52f00e4bacb0ebdf47cd7016b0485fffad2Fixed10c2b98a40d9044a3e97f4697ca6213bad7e19c2Fixed967c28b23f6c89bb8eef6a046ea88afe0d7c1029