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...

CVE-2026-89551 SUNRPC: xdr_buf_trim: clamp buf->len to avoid underflow

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...

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...

EUVD-2026-76461

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;...

CVE-2026-89550 SUNRPC: svcauth_gss: enforce krb5 token minimum length

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;...

CVE-2026-89550 SUNRPC: svcauth_gss: enforce krb5 token minimum length

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;...

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;...

CVE-2026-89542

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: harden gsskrb5unwrapv2 against short tokens gsskrb5unwrapv2 reads the EC and RRC header fields at ptr+4 and ptr+6 before validating that the token is at least GSSKRB5TOKHDRLEN 16 bytes long, and its rotateleft helper pass...

CVE-2026-89538 SUNRPC: Reject krb5 v2 wrap tokens with oversized ec field

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-2026-89537

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...

PT-2026-96340

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-2026-90266

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the SUNRPC component where the svcauth gss unwrap priv function only validates the upper bound of the wire-supplied opaque length len before passing the buffer to gss...

PT-2026-96566

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: svcauth gss: enforce krb5 token minimum length svcauth gss unwrap priv validates only an upper bound on the wire-supplied opaque length before handing the buffer to gss unwrap: if len xdr stream remainingxdr goto unwrap...

PT-2026-90254

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the SUNRPC component where the gss krb5 unwrap v2 function fails to properly validate the 16-bit extra count ec field in Kerberos v2 token headers. A peer with a valid...

PT-2026-96331

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

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An integer underflow exists in the SUNRPC component. The xdr buf trim function trims bytes from the tail of an xdr buf by iterating through tail, pages, and head iovecs. A failure to cla...

PT-2026-90258

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the SUNRPC component where the gss krb5 unwrap v2 function reads header fields before validating that the token is at least 16 bytes long. This can lead to out-of-boun...

PT-2026-96479

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-2026-90253

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the SUNRPC component where the gss krb5 verify mic v2 function fails to verify the length of the read token-len before accessing the token ID, flags byte, and padding...