CVE-2025-21758
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-21758
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21758.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-21758
- Downstream
- Related
- Published
- 2025-02-27T03:15:16Z
- Modified
- 2025-08-09T20:01:26Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ipv6: mcast: add RCU protection to mld_newpack()
mld_newpack() can be called without RTNL or RCU being held.
Note that we no longer can use sockallocsendskb() because ipv6.igmpsk uses GFP_KERNEL allocations which can sleep.
Instead use allocskb() and charge the net->ipv6.igmpsk socket under RCU protection.
- References
-
- https://git.kernel.org/stable/c/1b91c597b0214b1b462eb627ec02658c944623f2
- https://git.kernel.org/stable/c/25195f9d5ffcc8079ad743a50c0409dbdc48d98a
- https://git.kernel.org/stable/c/29fa42197f26a97cde29fa8c40beddf44ea5c8f3
- https://git.kernel.org/stable/c/a527750d877fd334de87eef81f1cb5f0f0ca3373
- https://git.kernel.org/stable/c/d60d493b0e65647e0335e6a7c4547abcea7df8e9
- https://git.kernel.org/stable/c/e8af3632a7f2da83e27b083f787bced1faba00b1