CVE-2026-74550
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net: do not send ICMP/NDISC Redirects when peer allocation fails
In the Linux kernel, the following vulnerability has been resolved: net: do not send ICMP/NDISC Redirects when peer allocation fails When inet_getpeer_v4() or inet_getpeer_v6() fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending un-rate-limited ICMP/NDISC Redirect messages. In IPv4, ip_rt_send_redirect() called icmp_send() directly when peer == NULL. In IPv6, ip6_forward() and ndisc_send_redirect() passed a NULL peer into inet_peer_xrlim_allow(), which returned true when peer == NULL. Because ICMP/NDISC Redirects are not part of the default global rate limit mask (sysctl_icmp_ratemask), sending redirects when peer == NULL creates an un-rate-limited ICMP packet storm. Fix this by failing closed in ip_rt_send_redirect(), ip6_forward(), and ndisc_send_redirect() when peer is NULL.
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) |
|---|---|---|---|---|---|
| 92d8682926342d2b6aa5b2ecc02221e00e1573a0 | affected | git | c0adf8b4247bcc5a145a25c1929006eb392580bb | Unavailable | None listed |
| 92d8682926342d2b6aa5b2ecc02221e00e1573a0 | affected | git | f5ecaa7ea7686fa7ecdb6affc9d3a9a42e4524b1 | Unavailable | None listed |
| 92d8682926342d2b6aa5b2ecc02221e00e1573a0 | affected | git | 21666f7af49a90ef44d474916b8ef4402dfd74f5 | Unavailable | None listed |
| 92d8682926342d2b6aa5b2ecc02221e00e1573a0 | affected | git | 5ec5f00fc606a6df8434948c4552b3cb1176595d | Unavailable | None listed |
| 92d8682926342d2b6aa5b2ecc02221e00e1573a0 | affected | git | 828f6670d110ff2bf44c743037b38badc315704c | Unavailable | None listed |
| 92d8682926342d2b6aa5b2ecc02221e00e1573a0 | affected | git | dbc3791e3b2472e1ccc08947e0f83b443470ff4f | 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) |
|---|---|---|---|---|---|
| 2.6.39 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.39 | Unavailable | None listed |
| 6.1.183 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.151 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.103 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.44 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.8 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |