CVE-2025-40046
- Source
- https://cve.org/CVERecord?id=CVE-2025-40046
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40046.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-40046
- Downstream
- Published
- 2025-10-28T11:48:24.022Z
- Modified
- 2025-12-02T06:51:53.417708Z
- Summary
- io_uring/zcrx: fix overshooting recv limit
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
io_uring/zcrx: fix overshooting recv limit
It's reported that sometimes a zcrx request can receive more than was requested. It's caused by iozcrxrecv_skb() adjusting desc->count for all received buffers including frag lists, but then doing recursive calls to process frag list skbs, which leads to desc->count double accounting and underflow.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40046.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/09cfd3c52ea76f43b3cb15e570aeddf633d65e80
- https://git.kernel.org/stable/c/8bcc9eaf1b19f1a7029cba19f6bd4122b40f6c4f
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40046.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-40046
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
-
Introduced6699ec9a23f85f1764183430209c741847c45f12Fixed8bcc9eaf1b19f1a7029cba19f6bd4122b40f6c4fFixed09cfd3c52ea76f43b3cb15e570aeddf633d65e80
Affected versions
v6.*
v6.14
v6.14-rc4
v6.14-rc5
v6.14-rc6
v6.14-rc7
v6.15
v6.15-rc1
v6.15-rc2
v6.15-rc3
v6.15-rc4
v6.15-rc5
v6.15-rc6
v6.15-rc7
v6.16
v6.16-rc1
v6.16-rc2
v6.16-rc3
v6.16-rc4
v6.16-rc5
v6.16-rc6
v6.16-rc7
v6.17
v6.17-rc1
v6.17-rc2
v6.17-rc3
v6.17-rc4
v6.17-rc5
v6.17-rc6
v6.17-rc7
v6.17.1
v6.17.2