Описание
Security update for kubevirt1.8
This update for kubevirt1.8 fixes the following issues:
Update to version 1.8.4.
Security issues fixed:
- CVE-2026-13201: virt-handler-rhel9: kubevirt: safepath
OpenAtNoFollowsymlink following via/proc/self/fdallows host file metadata modification (bsc#1269093). - CVE-2026-13622: virt-handler migration proxy follows symlinks and allows container escape to host (bsc#1272840).
- CVE-2026-25680, CVE-2026-25681, CVE-2026-27136, CVE-2026-42502, CVE-2026-42506: golang.org/x/net/html: multiple issues when parsing HTML files (bsc#1267120).
- CVE-2026-33814: golang.org/x/net/http2: processing of HTTP/2 SETTINGS frames with a crafted
SETTINGS_MAX_FRAME_SIZEcan lead to an infinite loop and a denial of service (bsc#1265736). - CVE-2026-35469: github.com/moby/spdystream: improper validation of attacker-controlled input in the SPDY/3 frame parser allows for a denial of service via crafted SPDY frames (bsc#1262265).
- CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266575).
- CVE-2026-39827, CVE-2026-39828, CVE-2026-39829, CVE-2026-39830, CVE-2026-39831, CVE-2026-39832, CVE-2026-39833,
CVE-2026-39834, CVE-2026-39835, CVE-2026-42508, CVE-2026-46595, CVE-2026-46597, CVE-2026-46598:
golang.org/x/crypto/ssh: multiple issues in
x/crypto/ssh(bsc#1266151). - CVE-2026-46600: parsing of invalid SVCB or HTTPS RR when the size of a parameter value overflows the message buffer can lead to panic (bsc#1273606).
- CVE-2026-56852: improper handling of truncated/invalid UTF-8 input can lead to an infinite loop (bsc#1272011).
Other updates and bugfixes:
- Fix the release manifests' image references (bsc#1272604).
- Add a
libguestfs-toolssubpackage. - Build with Go >= 1.25 (required by
golang.org/x/net0.55). - Version 1.8.4:
- node-labeller: use new
libvirtflags for full feature expansion. - Fix gRPC connection leak in
GetLauncherClient; clean up ghost launcher record on connection setup failure. - api: validate
VMI VSOCK CIDand checksum status fields asuint32. - virt-operator: refine canary flow to fully support out-of-band changes.
- New
virt-api/virt-handler/virt-operatorready and down metrics, alerts and recording rules.
- node-labeller: use new
- Refresh
disks-images-provider.yamlto the v1.8.4 image tag.
Список пакетов
openSUSE Leap 16.0
Ссылки
- SUSE Security Ratings
- SUSE Bug 1262265
- SUSE Bug 1265736
- SUSE Bug 1266151
- SUSE Bug 1266575
- SUSE Bug 1267120
- SUSE Bug 1269093
- SUSE Bug 1272011
- SUSE Bug 1272604
- SUSE Bug 1272840
- SUSE Bug 1273606
- SUSE CVE CVE-2026-13201 page
- SUSE CVE CVE-2026-13622 page
- SUSE CVE CVE-2026-25680 page
- SUSE CVE CVE-2026-25681 page
- SUSE CVE CVE-2026-27136 page
- SUSE CVE CVE-2026-33814 page
- SUSE CVE CVE-2026-35469 page
- SUSE CVE CVE-2026-39821 page
- SUSE CVE CVE-2026-39827 page
Описание
A flaw was found in KubeVirt's safepath package used by virt-handler. The OpenAtNoFollow function uses O_PATH|O_NOFOLLOW to obtain a file descriptor to a path leaf, but downstream operations resolve the path via /proc/self/fd/N using link-following syscalls. When the leaf is a symlink, the kernel dereferences it, defeating the intended no-follow protection. An attacker with access to a virt-launcher pod can exploit this to redirect virt-handler's IPC socket connections, including the notify socket used for VM domain lifecycle events. By hijacking this socket, the attacker can inject arbitrary domain events into virt-handler, causing it to take incorrect lifecycle actions, corrupt VM state in the Kubernetes API, or crash - resulting in sustained denial of VM management services for all virtual machines on the affected node. Additionally, the same symlink following flaw allows virt-handler to apply file ownership or permission changes to unintended host paths.
Затронутые продукты
Ссылки
- CVE-2026-13201
- SUSE Bug 1269093
Описание
A symlink following vulnerability was found in KubeVirt's virt-handler migration proxy. During live migration, virt-handler dials Unix sockets inside the target virt-launcher pod via /proc/<pid>/root/ paths using net.Dial() without symlink protection. These socket paths reside in qemu-owned directories writable by the virt-launcher user. An attacker with namespace edit and pods/exec permissions can replace a migration proxy socket with a symlink to the host CRI-O socket. Because virt-handler runs as root in the host mount namespace, absolute symlink targets resolve against the host filesystem, and the bidirectional io.Copy proxy relays attacker-controlled bytes to the container runtime, enabling full node compromise.
Затронутые продукты
Ссылки
- CVE-2026-13622
- SUSE Bug 1272840
Описание
Parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.
Затронутые продукты
Ссылки
- CVE-2026-25680
- SUSE Bug 1267044
Описание
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.
Затронутые продукты
Ссылки
- CVE-2026-25681
- SUSE Bug 1267044
Описание
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.
Затронутые продукты
Ссылки
- CVE-2026-27136
- SUSE Bug 1267044
Описание
When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.
Затронутые продукты
Ссылки
- CVE-2026-33814
- SUSE Bug 1264506
- SUSE Bug 1268758
Описание
spdystream is a Go library for multiplexing streams over SPDY connections. In versions 0.5.0 and below, the SPDY/3 frame parser does not validate attacker-controlled counts and lengths before allocating memory. Three allocation paths are affected: the SETTINGS frame entry count, the header count in parseHeaderValueBlock, and individual header field sizes - all read as 32-bit integers and used directly as allocation sizes with no bounds checking. Because SPDY header blocks are zlib-compressed, a small on-the-wire payload can decompress into large attacker-controlled values. A remote peer that can send SPDY frames to a service using spdystream can exhaust process memory and cause an out-of-memory crash with a single crafted control frame. This issue has been fixed in version 0.5.1.
Затронутые продукты
Ссылки
- CVE-2026-35469
- SUSE Bug 1262264
Описание
The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode("xn--example-.com") incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna package. For example, a program which performs privilege checks on the ASCII hostname may reject "example.com" but permit "xn--example-.com". If that program subsequently converts the ASCII hostname to Unicode, it will inadvertently permits access to the Unicode name "example.com".
Затронутые продукты
Ссылки
- CVE-2026-39821
- SUSE Bug 1266474
Описание
An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.
Затронутые продукты
Ссылки
- CVE-2026-39827
- SUSE Bug 1266049
Описание
When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error.
Затронутые продукты
Ссылки
- CVE-2026-39828
- SUSE Bug 1266049
Описание
The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.
Затронутые продукты
Ссылки
- CVE-2026-39829
- SUSE Bug 1266049
Описание
A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.
Затронутые продукты
Ссылки
- CVE-2026-39830
- SUSE Bug 1266049
Описание
The Verify() method for FIDO/U2F security key types (sk-ecdsa-sha2-nistp256@openssh.com, sk-ssh-ed25519@openssh.com) did not check the User Presence flag. Signatures generated without physical touch were accepted, allowing unattended use of a hardware security key. To restore the previous behavior, return a "no-touch-required" extension in Permissions.Extensions from PublicKeyCallback.
Затронутые продукты
Ссылки
- CVE-2026-39831
- SUSE Bug 1266049
Описание
When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.
Затронутые продукты
Ссылки
- CVE-2026-39832
- SUSE Bug 1266049
Описание
The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring() now returns an error when unsupported constraints are requested.
Затронутые продукты
Ссылки
- CVE-2026-39833
- SUSE Bug 1266049
- SUSE Bug 1272292
Описание
When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress. The size comparison now uses int64 to prevent truncation.
Затронутые продукты
Ссылки
- CVE-2026-39834
- SUSE Bug 1266049
Описание
SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.
Затронутые продукты
Ссылки
- CVE-2026-39835
- SUSE Bug 1266049
Описание
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.
Затронутые продукты
Ссылки
- CVE-2026-42502
- SUSE Bug 1267044
Описание
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.
Затронутые продукты
Ссылки
- CVE-2026-42506
- SUSE Bug 1267044
Описание
Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.
Затронутые продукты
Ссылки
- CVE-2026-42508
- SUSE Bug 1266049
Описание
Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of callback is passed other than public key, then the source-address validation would be skipped.
Затронутые продукты
Ссылки
- CVE-2026-46595
- SUSE Bug 1266049
Описание
An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.
Затронутые продукты
Ссылки
- CVE-2026-46597
- SUSE Bug 1266049
Описание
For certain crafted inputs, a 'ed25519.PrivateKey' was created by casting malformed wire bytes, leading to a panic when used.
Затронутые продукты
Ссылки
- CVE-2026-46598
- SUSE Bug 1266049
Описание
Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
Затронутые продукты
Ссылки
- CVE-2026-46600
- SUSE Bug 1272415
Описание
A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.
Затронутые продукты
Ссылки
- CVE-2026-56852
- SUSE Bug 1271661