CVE-2026-89538

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Reject krb5 v2 wrap tokens with oversized ec field gsskrb5unwrapv2 sets buf-len to a logical length, which can be much smaller than head0.iovlen the allocated receive-page capacity. It then calls xdrbuftrim with a trim...

EUVD-2026-76449

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Reject krb5 v2 wrap tokens with oversized ec field gsskrb5unwrapv2 sets buf-len to a logical length, which can be much smaller than head0.iovlen the allocated receive-page capacity. It then calls xdrbuftrim with a trim...

CVE-2026-89538

CVE-2026-89538 affects the Linux kernel's SUNRPC component, specifically the gss_krb5_unwrap_v2() function. A remote peer holding a valid GSS context can send a Kerberos v2 wrap token whose 16-bit "extra count" (ec) field exceeds the plaintext length—a structurally malformed token per RFC 4121 . ...

CVE-2026-89537

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Reject short RFC 4121 MIC tokens in gsskrb5verifymicv2 gsskrb5verifymicv2 reads the token ID at ptr0..1, the flags byte at ptr2, and padding at ptr3..7, then passes ptr + GSSKRB5TOKHDRLEN and cksumlen to gsskrb5micbuildsg...

CVE-2026-89537 SUNRPC: Reject short RFC 4121 MIC tokens in gss_krb5_verify_mic_v2

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Reject short RFC 4121 MIC tokens in gsskrb5verifymicv2 gsskrb5verifymicv2 reads the token ID at ptr0..1, the flags byte at ptr2, and padding at ptr3..7, then passes ptr + GSSKRB5TOKHDRLEN and cksumlen to gsskrb5micbuildsg...

CVE-2026-89537

CVE-2026-89537 affects the Linux kernel's SUNRPC subsystem, specifically the gss_krb5_verify_mic_v2() function, which reads RFC 4121 MIC token header fields without first validating the token length. A remote malicious NFS server can supply an undersized Kerberos MIC token, causing the verifier t...

CVE-2026-89536 SUNRPC: wait for in-flight client TLS handshake callback

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: wait for in-flight client TLS handshake callback xstlshandshakesync gives xstlshandshakedone a reference to the lower transport before submitting the handshake request. On timeout or signal, the synchronous waiter drops...

EUVD-2026-76442

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: wait for in-flight client TLS handshake callback xstlshandshakesync gives xstlshandshakedone a reference to the lower transport before submitting the handshake request. On timeout or signal, the synchronous waiter drops...

CVE-2026-89536 SUNRPC: wait for in-flight client TLS handshake callback

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: wait for in-flight client TLS handshake callback xstlshandshakesync gives xstlshandshakedone a reference to the lower transport before submitting the handshake request. On timeout or signal, the synchronous waiter drops...

CVE-2026-89536

CVE-2026-89536 is a race condition in the Linux kernel SUNRPC subsystem's client TLS handshake process. When a handshake is cancelled due to a timeout or signal, the synchronous waiter can prematurely drop the reference to the lower transport if the completion callback is still in flight, leading...

CVE-2026-89536

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: wait for in-flight client TLS handshake callback xstlshandshakesync gives xstlshandshakedone a reference to the lower transport before submitting the handshake request. On timeout or signal, the synchronous waiter drops...

PT-2026-90263

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Check svc pool percpu counter allocation svc create initializes three per-pool percpu counter stats and ignores every return value. On SMP, percpu counter init fails when alloc percpu gfp cannot satisfy the allocation,...

PT-2026-90254

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Reject krb5 v2 wrap tokens with oversized ec field gss krb5 unwrap v2 sets buf-len to a logical length, which can be much smaller than head0.iov len the allocated receive-page capacity. It then calls xdr buf trim with a...

PT-2026-90267

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

PT-2026-90252

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: wait for in-flight client TLS handshake callback xs tls handshake sync gives xs tls handshake done a reference to the lower transport before submitting the handshake request. On timeout or signal, the synchronous waiter...

PT-2026-90256

In the Linux kernel, the following vulnerability has been resolved: sunrpc: init gssp lock before publishing proc entry create use gss proxy proc entry publishes /proc/net/rpc/use-gss-proxy via proc create data before init gssp clnt runs mutex init on sn-gssp lock. Once the dentry is linked under...

PT-2026-90253

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Reject short RFC 4121 MIC tokens in gss krb5 verify mic v2 gss krb5 verify mic v2 reads the token ID at ptr0..1, the flags byte at ptr2, and padding at ptr3..7, then passes ptr + GSS KRB5 TOK HDR LEN and cksum len to gss...

PT-2026-90258

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: harden gss krb5 unwrap v2 against short tokens gss krb5 unwrap v2 reads the EC and RRC header fields at ptr+4 and ptr+6 before validating that the token is at least GSS KRB5 TOK HDR LEN 16 bytes long, and its rotate left...

PT-2026-90262

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: close backchannel before destroying callback service A backchannel receive can complete a request while the NFS callback service is being torn down. xprt complete bc request removes the request from bc pa list, drops bc...

PT-2026-90264

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: always drain cache cleaner before destroying a cache detail sunrpc destroy cache detail only cancels the global cache cleaner delayed work when cache list is empty. During per-netns teardown cache list is never empty...