Netty: SCTP reassembly nests buffers without bound

For each non-complete SctpMessage fragment the handler does fragments.putstreamId, Unpooled.wrappedBufferfrag, byteBuf, wrapping the previous accumulator and the new slice into a new CompositeByteBuf every time. After N fragments the accumulator is an N-deep chain of composites, each holding...

CVE-2026-37229

FlexRIC v2.0.0 contains a reachable assertion in e2apcreatepdu triggered when ASN.1 PER decoding fails. A remote unauthenticated attacker can send any non-PER byte sequence e.g., a single 0x00 byte over SCTP to the near-RT RIC port 36421 or iApp port 36422 to crash the process via SIGABRT. The...

CVE-2026-37228

FlexRIC v2.0.0 contains a reachable assertion in e2aprecvsctpmsg src/lib/ep/e2apep.c. The function allocates a fixed 32KB receive buffer and enforces assertrc = 32,768 bytes to crash the near-RT RIC, iApp, E2 Agent, or xApp process via SIGABRT. No valid E2AP PDU is required. All four SCTP endpoin...

PT-2026-45508

FlexRIC v2.0.0 contains a reachable assertion in e2ap create pdu triggered when ASN.1 PER decoding fails. A remote unauthenticated attacker can send any non-PER byte sequence e.g., a single 0x00 byte over SCTP to the near-RT RIC port 36421 or iApp port 36422 to crash the process via SIGABRT. The...

CVE-2026-37220

FlexRIC v2.0.0 crashes when an SCTP association is closed before an E2SETUPREQUEST is sent. The near-RT RIC assumes a mapping between SCTP association and E2 node always exists in the cleanup path and enforces this via assert. A remote unauthenticated attacker can crash the near-RT RIC port 36421...

CVE-2026-37235

FlexRIC v2.0.0 trusts the xappid field from E42 message payloads without binding it to the sender's SCTP association. The validation function validxappid only checks that the value is within the assigned range. A remote unauthenticated attacker can impersonate any xApp by specifying their xappid ...

FlexRIC security vulnerabilities

FlexRIC is an open-source RAN intelligent controller developed by Mosaic5G. Version FlexRIC v2.0.0 contains a security vulnerability. This vulnerability stems from the assertion in the e2aprecvsctpmsg function, where assertrc len is used. This could allow unauthorized remote attackers to send SCT...

CVE-2026-37232

OpenAirInterface5G 2.4.0 (nr-softmodem) E2SM-KPM RAN Function PRB utilization calculation (fill_RRU_PrbTotDl/Ul in openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_kpm_subs.c) divides PRB difference by the previous total_prb_aggregate, missing a zero-check. If two consecutive samples are identical and a...

CVE-2026-37228

FlexRIC v2.0.0 contains a reachable assertion in e2aprecvsctpmsg src/lib/ep/e2apep.c. The function allocates a fixed 32KB receive buffer and enforces assertrc = 32,768 bytes to crash the near-RT RIC, iApp, E2 Agent, or xApp process via SIGABRT. No valid E2AP PDU is required. All four SCTP endpoin...

UBUNTU-CVE-2026-46227

In the Linux kernel, the following vulnerability has been resolved: sctp: revalidate list cursor after sctpsendmsgtoasoc in SCTPSENDALL The SCTPSENDALL path in sctpsendmsg iterates ep-asocs with listforeachentrysafe, which caches the next entry in @tmp before the loop body runs. The body calls...

CVE-2026-46227

In the Linux kernel, the following vulnerability has been resolved: sctp: revalidate list cursor after sctpsendmsgtoasoc in SCTPSENDALL The SCTPSENDALL path in sctpsendmsg iterates ep-asocs with listforeachentrysafe, which caches the next entry in @tmp before the loop body runs. The body calls...

PT-2026-44350

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free or type confusion issue exists in the SCTP implementation of the Linux kernel. In the sctp sendmsg function, the SCTP SENDALL path iterates through associations using li...

Astra Linux - уязвимость в linux-6.1, linux-5.15

In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: udpport: avoid using current-nsproxy As mentioned in a previous commit of this series, using the ‘net’ structure via ‘current’ is not recommended for various reasons: - Inconsistency: Information is obtained from th...

Astra Linux - уязвимость в linux, linux-5.10, linux-5.15, linux-6.1

In the Linux kernel, the following vulnerabilities have been resolved: SCTP: The issue of null-ptr-deref in reuseportaddsock has been fixed. syzbot reported a null-ptr-deref while accessing sk2-skreuseportcb in reuseportaddsock. The repro first creates a listener with SOREUSEPORT. Then, it create...

Astra Linux - уязвимость в linux-5.10, linux-6.1, linux, linux-5.15

In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: rtomin/max: Avoid using current-nsproxy. As mentioned in a previous commit of this series, using the net structure via current is not recommended for various reasons: - Inconsistency: Obtaining information from the...

Astra Linux - уязвимость в linux-5.10, linux-6.1, linux-5.15

In the Linux kernel, the following vulnerabilities have been resolved: SCTP: Added mutual exclusion in procsctpdoudpport. We must serialize calls to sctpudpsockstop and sctpudpsockstart, or risk a crash, as syzbot reported: Oops: General protection fault, likely due to a non-canonical address...

Astra Linux - уязвимость в linux, linux-5.10

A flaw was discovered in the sctpmakestrresetreq function within the net/sctp/smmakechunk.c file, located in the SCTP network protocol in the Linux kernel. This flaw involves attempting to use more buffer space than is allocated, which triggers a BUGON issue, resulting in a denial of service DOS...

Astra Linux - уязвимость в linux

A vulnerability was discovered in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory...

Astra Linux - уязвимость в linux-5.10, linux-6.1, linux, linux-5.15

In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: authenable: avoid using current-nsproxy As mentioned in a previous commit of this series, using the net structure via current is not recommended for various reasons: - Inconsistency: obtaining information from the...

Astra Linux - уязвимость в linux-5.10, linux-6.1, linux, linux-5.15

In the Linux kernel, the following vulnerability has been resolved: net/sctp: The issue of integer overflow during autoclose operations in sctpassociationinit has been addressed. By default, maxautoclose equals INTMAX / HZ. However, it is possible to set net.sctp.maxautoclose to UINTMAX. There is...