Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed an infinite loop issue when len is 0 in the tcpbpfrecvmsg parser. When the buffer length of the recvmsg system call is 0, a soft lockup problem occurred. watchdog: BUG: Soft lockup – CPU3 stuck for 27...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: BPF, sockmap: Fixed a potential memory leak in an unlikely error case. If the skblinearize function is required and fails, we might leak a message during error handling. To address this issue, we ensure that we free the message...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed a race condition related to the refcnt of skb after locking operations. There is a race condition where the skb from the skpsockbacklog can be referenced after the user-space environment has already consume...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Avoid using sksocket after free when sending messages. The sk-sksocket is not locked or referenced in the backlog thread. During the call to skbsendsock, there is a race condition involving the release of sksocket...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed a race condition in sockmapfree. sockmapfree calls releasesocksk without owning a reference to the socket. This could lead to a use-after-free, as syzbot identified this issue 1. Jakub Sitnicki already...

CVE-2026-68386

The CVE concerns the Linux kernel’s BPF sockmap path. It describes a vulnerability where unhashed UDP sockets accepted by sockmap can have their refcount incremented via a BPF lookup, and if the socket becomes bound, the subsequent bpf_sk_release() may skip decreasing the refcount, leading to a m...

CVE-2026-64548

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: reject overflowing copy + len in bpfmsgpushdata When the scatterlist ring is full or nearly full, bpfmsgpushdata enters a copy fallback path and computes copy + len for the page allocation size. Since len comes from...

SUSE CVE-2026-63926

In the Linux kernel, the following vulnerability has been resolved: bpf: sockmap: fix tail fragment offset in bpfmsgpushdata When bpfmsgpushdata inserts data in the middle of a scatterlist entry, it splits the original entry into a left fragment and a right fragment. The right fragment offset is...

CVE-2026-63926 bpf: sockmap: fix tail fragment offset in bpf_msg_push_data

In the Linux kernel, the following vulnerability has been resolved: bpf: sockmap: fix tail fragment offset in bpfmsgpushdata When bpfmsgpushdata inserts data in the middle of a scatterlist entry, it splits the original entry into a left fragment and a right fragment. The right fragment offset is...

bpf, sockmap: Fix af_unix null-ptr-deref in proto update

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bpf, sockmap: Fix af_unix iter deadlock

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SUSE CVE-2026-53035

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix afunix iter deadlock bpfiterunixseqshow may deadlock when locksockfast takes the fast path and the iter prog attempts to update a sockmap. Which ends up spinning at sockmapupdateelem's bhlocksock: WARNING:...

CVE-2026-53005

A flaw was found in the Linux kernel's afunix component, specifically within its SOCKMAP feature. This vulnerability stems from the kernel's improper handling of Socket Control Message SCM attributes when data is passed to the SOCKMAP layer. This can lead to a use-after-free condition, which may...

CVE-2026-53184 udp: clear skb->dev before running a sockmap verdict

In the Linux kernel, the following vulnerability has been resolved: udp: clear skb-dev before running a sockmap verdict On the UDP receive path skb-dev is repurposed as devscratch the truesize/state cache set by udpsetdevscratch, through the union struct netdevice dev; unsigned long devscratch; i...

Linux Distros Unpatched Vulnerability : CVE-2026-53035

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf, sockmap: Fix afunix iter deadlock bpfiterunixseqshow may deadlock when locksockfast takes the fast path and the iter prog attempts to update a sockmap...

EUVD-2026-38901

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Take state lock for afunix iter When a BPF iterator program updates a sockmap, there is a race condition in unixstreambpfupdateproto where the peer pointer can become stale1 during a state transition TCPESTABLISHED ...

CVE-2026-53035

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix afunix iter deadlock bpfiterunixseqshow may deadlock when locksockfast takes the fast path and the iter prog attempts to update a sockmap. Which ends up spinning at sockmapupdateelem's bhlocksock: WARNING:...

CVE-2026-53033

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Take state lock for afunix iter When a BPF iterator program updates a sockmap, there is a race condition in unixstreambpfupdateproto where the peer pointer can become stale1 during a state transition TCPESTABLISHED ...

CVE-2026-53034 bpf, sockmap: Fix af_unix null-ptr-deref in proto update

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix afunix null-ptr-deref in proto update unixstreamconnect sets skstate WRITEONCEsk-skstate, TCPESTABLISHED before it assigns a peer unixpeersk = newsk. skstate == TCPESTABLISHED makes sockmapskstateallowed believe...

CVE-2026-53005 af_unix: Drop all SCM attributes for SOCKMAP.

In the Linux kernel, the following vulnerability has been resolved: afunix: Drop all SCM attributes for SOCKMAP. SOCKMAP can hide inflight fd from AFUNIX GC. When a socket in SOCKMAP receives skb with inflight fd, skpsockverdictdataready looks up the mapped socket and enqueue skb to its...