CVE-2025-21759
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ipv6: mcast: extend RCU protection in igmp6_send()
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 | affected | git | 638e8fe3563a82f298fe537a28d5342a97278cf1 | Unavailable | None listed |
| b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 | affected | git | 6901bbb169e3add6c037218d996790cef6b3d650 | Unavailable | None listed |
| b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 | affected | git | 7e0a818ecc4d62e7fb668ea02de0bfe8ba0b7dff | Unavailable | None listed |
| b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 | affected | git | 81b25a07ebf53f9ef4ca8f3d96a8ddb94561dd5a | Unavailable | None listed |
| b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 | affected | git | 0bf8e2f3768629d437a32cb824149e6e98254381 | Unavailable | None listed |
| b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 | affected | git | 8e92d6a413feaf968a33f0b439ecf27404407458 | Unavailable | None listed |
| b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 | affected | git | 087c1faa594fa07a66933d750c0b2610aa1a2946 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.26 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.26 | Unavailable | None listed |
| 5.10.271 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.222 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.189 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.79 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.16 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.13.4 | unaffected | semver | Unavailable | 6.13.* | None listed |
| 6.14 | unaffected | original_commit_for_fix | Unavailable | * | None listed |