CVE-2026-89541

A flaw was found in the Linux kernel. Specifically, an integer overflow vulnerability exists in the gssunwrapresppriv function within the SUNRPC component. This flaw occurs when validating the length of RPCSECGSS opaque data. A malicious krb5p Network File System NFS server can send a specially...

CVE-2026-89546

A flaw was found in the Linux kernel's SUNRPC Sun Remote Procedure Call Network File System NFS callback service. A race condition during the service teardown can lead to system resources not being properly released, causing a resource leak. This issue could also result in a use-after-free...

CVE-2026-89545

A flaw was found in the Linux kernel. This vulnerability exists within the sunrpc component, where memory associated with rqargp and rqresp is freed prematurely. Specifically, the svcrqstfree function frees these structures synchronously, while the main request structure rqstp is freed later via...

CVE-2026-89540

A flaw was found in the Linux kernel's sunrpc component. A race condition exists where the gssplock mutex is not initialized before its associated /proc/net/rpc/use-gss-proxy entry is published. This allows a local attacker to trigger a scenario where multiple writers can concurrently access the...

CVE-2026-89550

A flaw was found in the Linux kernel's SUNRPC svcauthgss module. A remote attacker could send a specially crafted Kerberos krb5 token with an insufficient length. This could lead to a division-by-zero error within the gsskrb5unwrapv2 function, resulting in a Denial of Service DoS for the affected...

CVE-2026-89538

A flaw was found in the Linux kernel's Server Unix Remote Procedure Call SUNRPC component. A remote attacker, with a valid Generic Security Service GSS context, could send a specially crafted Kerberos v2 wrap token with an oversized "extra count" ec field. This improper handling of malformed toke...

CVE-2026-89537

A flaw was found in the Linux kernel's SUNRPC implementation, specifically within the gsskrb5verifymicv2 function. A remote malicious Network File System NFS server could provide a specially crafted, short Kerberos Message Integrity Code MIC token. This could lead to the kernel reading past an...

CVE-2026-89547

A flaw was found in the Linux kernel's SUNRPC component. A local administrator, under specific conditions of memory pressure or fault injection during RPC server startup, can trigger a failure in per-CPU counter allocation. This failure leads to uninitialized counters, which, when subsequently...

CVE-2026-89544

A flaw was found in the Linux kernel's SUNRPC component. Multiple defects in the gssxdecoptionarray XDR option-array decoder's error handling can lead to a NULL dereference, a reference count leak, and a use-after-free vulnerability. An attacker could potentially exploit these issues by providing...

CVE-2026-89543

A flaw was found in the kernel's sunrpc component. A use-after-free vulnerability can occur due to improper handling of clnt-pipefssb pointers during mount and unmount events. This can lead to stale pointers, which, when accessed, may result in a system crash Denial of Service...

DEBIAN-CVE-2026-89547

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Check svc pool percpu counter allocation svccreate initializes three per-pool percpucounter stats and ignores every return value. On SMP, percpucounterinit fails when allocpercpugfp cannot satisfy the allocation, leaving...

DEBIAN-CVE-2026-89550

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: svcauthgss: enforce krb5 token minimum length svcauthgssunwrappriv validates only an upper bound on the wire-supplied opaque length before handing the buffer to gssunwrap: if len xdrstreamremainingxdr goto unwrapfailed;...

AZL-100743 CVE-2026-89548 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: always drain cachecleaner before destroying a cachedetail sunrpcdestroycachedetail only cancels the global cachecleaner delayedwork when cachelist is empty. During per-netns teardown cachelist is never empty because...

AZL-100338 CVE-2026-89551 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: xdrbuftrim: clamp buf-len to avoid underflow xdrbuftrim trims len bytes from the tail of an xdrbuf by walking the tail, pages, and head iovecs. Each per-section step uses mint so it never removes more bytes than that...

DEBIAN-CVE-2026-89549

In the Linux kernel, the following vulnerability has been resolved: sunrpc: route to a populated pool in svcpoolforcpu svcsetnumthreads spreads the requested threads evenly across the service's pools base = nrservs / svnrpools. When a service runs fewer threads than it has pools -- e.g. an nfsd...

CVE-2026-89548

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: always drain cachecleaner before destroying a cachedetail sunrpcdestroycachedetail only cancels the global cachecleaner delayedwork when cachelist is empty. During per-netns teardown cachelist is never empty because...

CVE-2026-89547

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Check svc pool percpu counter allocation svccreate initializes three per-pool percpucounter stats and ignores every return value. On SMP, percpucounterinit fails when allocpercpugfp cannot satisfy the allocation, leaving...

AZL-100776 CVE-2026-89550 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: svcauthgss: enforce krb5 token minimum length svcauthgssunwrappriv validates only an upper bound on the wire-supplied opaque length before handing the buffer to gssunwrap: if len xdrstreamremainingxdr goto unwrapfailed;...

DEBIAN-CVE-2026-89548

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: always drain cachecleaner before destroying a cachedetail sunrpcdestroycachedetail only cancels the global cachecleaner delayedwork when cachelist is empty. During per-netns teardown cachelist is never empty because...

DEBIAN-CVE-2026-89551

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: xdrbuftrim: clamp buf-len to avoid underflow xdrbuftrim trims len bytes from the tail of an xdrbuf by walking the tail, pages, and head iovecs. Each per-section step uses mint so it never removes more bytes than that...