CVE-2025-21759
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Błąd w jądrze Linuxa w igmp6_send() może prowadzić do użycia po zwolnieniu pamięci.
CVSS
7.8
EPSS
7.8%
Exploit
none
Vendor
linux
Opis źródłowy (NVD)
In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: extend RCU protection in igmp6_send() igmp6_send() can be called without RTNL or RCU being held. Extend RCU protection so that we can safely fetch the net pointer and avoid a potential UAF. Note that we no longer can use sock_alloc_send_skb() because ipv6.igmp_sk uses GFP_KERNEL allocations which can sleep. Instead use alloc_skb() and charge the net->ipv6.igmp_sk socket under RCU protection.
brak
Brak patcha
Źródła i daty
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 7.8 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 7.8% |
| Opublikowano (NVD) | 2025-02-27 03:15:16 UTC |
| Ostatnia modyfikacja (NVD) | 2026-10-03 11:17:32 UTC |
Referencje
- https://git.kernel.org/stable/c/087c1faa594fa07a66933d750c0b2610aa1a2946 (416baaa9-dc9f-4396-8d5f-8c081fb06d67) [Patch]
- https://git.kernel.org/stable/c/0bf8e2f3768629d437a32cb824149e6e98254381 (416baaa9-dc9f-4396-8d5f-8c081fb06d67) [Patch]
- https://git.kernel.org/stable/c/638e8fe3563a82f298fe537a28d5342a97278cf1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- https://git.kernel.org/stable/c/6901bbb169e3add6c037218d996790cef6b3d650 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- https://git.kernel.org/stable/c/7e0a818ecc4d62e7fb668ea02de0bfe8ba0b7dff (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- https://git.kernel.org/stable/c/81b25a07ebf53f9ef4ca8f3d96a8ddb94561dd5a (416baaa9-dc9f-4396-8d5f-8c081fb06d67) [Patch]
- https://git.kernel.org/stable/c/8e92d6a413feaf968a33f0b439ecf27404407458 (416baaa9-dc9f-4396-8d5f-8c081fb06d67) [Patch]