Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: ndisc: fix NULL deref in acceptuntrackedna acceptuntrackedna re-fetches the inet6dev using in6devgetdev, and dereferences idev-cnf.acceptuntrackedna without performing a NULL check, even though its sole caller, ndiscrecvna,...

CLSA-2025-1754037492 Fix CVE(s): CVE-2025-21760, CVE-2025-21761, CVE-2025-21762, CVE-2025-21764

Ubuntu: 4.15.0-250.261 Focal update: v5.4.291 upstream stable release LP: 2106002 // CVE-2025-21760 // CVE-url: https://ubuntu.com/security/CVE-2025-21760 - ndisc: extend RCU protection in ndiscsendskb Focal update: v5.4.291 upstream stable release LP: 2106002 // CVE-2025-21761 // CVE-url:...

CLSA-2025-1754037789 Fix CVE(s): CVE-2025-21760, CVE-2025-21761, CVE-2025-21762, CVE-2025-21764

Focal update: v5.4.291 upstream stable release LP: 2106002 // CVE-2025-21760 // CVE-url: https://ubuntu.com/security/CVE-2025-21760 - ndisc: extend RCU protection in ndiscsendskb Focal update: v5.4.291 upstream stable release LP: 2106002 // CVE-2025-21761 // CVE-url:...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: A potential reference count leak has been fixed in ndiscrouterdiscovery. This issue occurs on specific paths within the function. After the object rt and neigh are successfully acquired, when lifetime is non-zero but the...

Rocky Linux 9 [CIQ] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (crlsa-2025_8333)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20258333 advisory. kernel: Use after Free in grusetcontextoption leading to kernel panic CVE-2022-3424 kernel: ndisc: use RCU protection in ndiscallocskb CVE-2025-21764 Tenab...

Rocky Linux 10.0 [CIQ] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (crlsa-2025_9079)

The Rocky Linux 10.0 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20259079 advisory. kernel: ndisc: use RCU protection in ndiscallocskb CVE-2025-21764 kernel: ovl: fix UAF in ovldentryupdatereval by moving dput in ovllinkup CVE-2025-2188...

CVE-2026-74550

A flaw was found in the kernel. When the network stack fails to allocate a peer entry, it can send un-rate-limited Internet Control Message Protocol ICMP or Neighbor Discovery NDISC Redirect messages. This can be exploited by a remote attacker to cause an uncontrolled flood of network traffic,...

SUSE CVE-2026-74550

In the Linux kernel, the following vulnerability has been resolved: net: do not send ICMP/NDISC Redirects when peer allocation fails When inetgetpeerv4 or inetgetpeerv6 fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending...

CVE-2026-74550

In the Linux kernel, the following vulnerability has been resolved: net: do not send ICMP/NDISC Redirects when peer allocation fails When inetgetpeerv4 or inetgetpeerv6 fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending...

AZL-96495 CVE-2026-74550 affecting package kernel for versions less than 6.6.152.1-1

In the Linux kernel, the following vulnerability has been resolved: net: do not send ICMP/NDISC Redirects when peer allocation fails When inetgetpeerv4 or inetgetpeerv6 fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending...

CVE-2026-74550

In the Linux kernel, the following vulnerability has been resolved: net: do not send ICMP/NDISC Redirects when peer allocation fails When inetgetpeerv4 or inetgetpeerv6 fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending...

UBUNTU-CVE-2026-74550

In the Linux kernel, the following vulnerability has been resolved: net: do not send ICMP/NDISC Redirects when peer allocation fails When inetgetpeerv4 or inetgetpeerv6 fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending...

CVE-2026-74550 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 inetgetpeerv4 or inetgetpeerv6 fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending...

CVE-2026-74550 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 inetgetpeerv4 or inetgetpeerv6 fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending...

CVE-2026-74550

In the Linux kernel, the following vulnerability has been resolved: net: do not send ICMP/NDISC Redirects when peer allocation fails When inetgetpeerv4 or inetgetpeerv6 fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending...

CVE-2026-74550

In the Linux kernel, the following vulnerability has been resolved: net: do not send ICMP/NDISC Redirects when peer allocation fails When inetgetpeerv4 or inetgetpeerv6 fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending...

CVE-2026-74550

Summary: CVE-2026-74550 affects the Linux kernel’s redirect handling for ICMP/NDISC redirects when peer allocation fails. When inet_getpeer_v4() or inet_getpeer_v6() cannot allocate a peer entry under memory pressure or tree size caps, redirect handlers previously could emit un-rate-limited ICMP/...

CVE-2026-74550 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 inetgetpeerv4 or inetgetpeerv6 fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending...

EUVD-2026-59615

In the Linux kernel, the following vulnerability has been resolved: net: do not send ICMP/NDISC Redirects when peer allocation fails When inetgetpeerv4 or inetgetpeerv6 fails to allocate a peer entry under memory pressure or tree size caps, redirect handlers previously fell back to sending...

PT-2026-73002

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists where the system may send un-rate-limited ICMP/NDISC Redirect messages when peer allocation fails due to memory pressure or tree size caps. This occurs because the...