Ubuntu · week of 12 Oct 2026
Ubuntu security note
Records on this stack that changed between 12 Oct 2026 and the following Monday. Versions come from the stored ranges. A quiet week is not proof the stack is clear.
What changed
USN-8932-1 — Open the advisory
curl vulnerabilities
Affected: 0 → 7.81.0-1ubuntu1.30, 0 → 8.5.0-2ubuntu10.16, 0 → 7.35.0-1ubuntu2.20+esm24, 0 → 7.47.0-1ubuntu2.19+esm21
USN-8927-1 — Open the advisory
curl vulnerabilities
Affected: 0 → 8.18.0-1ubuntu2.8
CVE-2026-53131 — Check if you run it
In the Linux kernel, the following vulnerability has been resolved: netfilter: require Ethernet MAC header before using eth_hdr() , , the , , and ipset types, and access after eith
Affected: 4.8.0-28.30~16.04.1, 4.8.0-30.32~16.04.1, 4.8.0-32.34~16.04.1, 0 → 3.13.0-218.269
CVE-2026-53221 — Check if you run it
In the Linux kernel, the following vulnerability has been resolved: ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup() In vti6_tnl_lookup(), when an exact match for a tunn
Affected: 4.8.0-28.30~16.04.1, 4.8.0-30.32~16.04.1, 4.8.0-32.34~16.04.1, 0 → 4.4.0-1159.165
USN-8933-1 — Open the advisory
rabbitmq-server vulnerabilities
Affected: 0 → 3.9.27-0ubuntu0.6, 0 → 3.12.1-1ubuntu1.7, 0 → 4.0.5-10ubuntu5.2, 0 → 3.5.7-1ubuntu0.16.04.4+esm3
CVE-2025-40778 — Check if you run it
Under certain circumstances, BIND is too lenient when accepting records from answers, allowing an attacker to inject forged data into the cache.
Affected: 4.3.5-3ubuntu2, 4.3.5-3ubuntu3, 4.3.5-3ubuntu4, 1:9.11.16+dfsg-3~build1
CVE-2026-11331 — Check if you run it
An attacker who knows (or guesses) that a resolver uses RPZ with wildcard CNAME policies can craft query names long enough to trigger a NAMETOOLONG error condition during RPZ proce
Affected: 4.3.5-3ubuntu2, 4.3.5-3ubuntu3, 4.3.5-3ubuntu4, 1:9.11.16+dfsg-3~build1
CVE-2026-1519 — Check if you run it
If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU.
Affected: 4.3.5-3ubuntu2, 4.3.5-3ubuntu3, 4.3.5-3ubuntu4, 1:9.11.16+dfsg-3~build1
What we still do not know
CVE-2025-7044 — Open the advisory
An Improper Input Validation vulnerability exists in the user websocket handler of MAAS.
No version range is stored, so an installed version cannot be checked.
CVE-2026-106585 — Check if you run it
In sshd and ssh in OpenSSH before 10.6, there is no check for whether the maximum packet length is exceeded during decompression of highly compressed data.
No version range is stored, so an installed version cannot be checked.
CVE-2026-106583 — Check if you run it
In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection.
No version range is stored, so an installed version cannot be checked.
CVE-2026-64545 — Check if you run it
net, bpf: check master for NULL in xdp_master_redirect()
No version range is stored, so an installed version cannot be checked.
CVE-2026-64538 — Check if you run it
In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix null-ptr-deref in fib6_nh_mtu_change().
No version range is stored, so an installed version cannot be checked.
CVE-2024-56779 — Check if you run it
In the Linux kernel, the following vulnerability has been resolved: nfsd: fix nfs4_openowner leak when concurrent nfsd4_open occur The action force umount(umount -f) will attempt t
No version range is stored, so an installed version cannot be checked.
CVE-2024-56570 — Check if you run it
In the Linux kernel, the following vulnerability has been resolved: ovl: Filter invalid inodes with missing lookup function Add a check to the ovl_dentry_weird() function to preven
No version range is stored, so an installed version cannot be checked.
CVE-2026-49237 — Check if you run it
An issue was discovered in Canonical Multipass for macOS before version 1.16.3 due to an incomplete fix for CVE-2025-5199.
No version range is stored, so an installed version cannot be checked.
Share this note
Ubuntu security note, week of 12 Oct 2026: 8 records have a version a customer can check, and 8 still do not. https://zerodayfindings.com/technologies/ubuntu/notes/2026-W42