CVE-2026-63800 pNFS: Fix use-after-free in pnfs_update_layout()

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfsupdatelayout When hitting the NFSLAYOUTRETURN branch in pnfsupdatelayout, the code calls pnfspreparetoretrylayoutgetlo. If it succeeds, pnfsputlayouthdrlo is called before tracepnfsupdatelayout,...

CVE-2026-63800

CVE-2026-63800 — Linux kernel (pNFS use-after-free) Affected: kernel code handling pnfs_update_layout() for NFS_LAYOUT_RETURN.Cause: If pnfs_prepare_to_retry_layoutget(lo) succeeds, pnfs_put_layout_hdr(lo) runs before trace_pnfs_update_layout(), while the tracepoint still references the structure...

CVE-2026-63800

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfsupdatelayout When hitting the NFSLAYOUTRETURN branch in pnfsupdatelayout, the code calls pnfspreparetoretrylayoutgetlo. If it succeeds, pnfsputlayouthdrlo is called before tracepnfsupdatelayout,...

EUVD-2026-45466

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfsupdatelayout When hitting the NFSLAYOUTRETURN branch in pnfsupdatelayout, the code calls pnfspreparetoretrylayoutgetlo. If it succeeds, pnfsputlayouthdrlo is called before tracepnfsupdatelayout,...

CVE-2026-63800 pNFS: Fix use-after-free in pnfs_update_layout()

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfsupdatelayout When hitting the NFSLAYOUTRETURN branch in pnfsupdatelayout, the code calls pnfspreparetoretrylayoutgetlo. If it succeeds, pnfsputlayouthdrlo is called before tracepnfsupdatelayout,...

CVE-2026-63800

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfsupdatelayout When hitting the NFSLAYOUTRETURN branch in pnfsupdatelayout, the code calls pnfspreparetoretrylayoutgetlo. If it succeeds, pnfsputlayouthdrlo is called before tracepnfsupdatelayout,...

PT-2026-61227

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the dma buf fd tracepoint. This occurs because a thread sharing the file descriptor table can call close after FD ADD returns but before DMA BUF TRACE...

PT-2026-61116

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the pNFS component. When the NFS LAYOUT RETURN branch is triggered within the pnfs update layout function, the system calls pnfs prepare to retry...

net/smc: avoid NULL deref of conn->lnk in smc_msg_event tracepoint

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SUSE CVE-2026-52941

In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid NULL deref of conn-lnk in smcmsgevent tracepoint The smcmsgevent tracepoint class, shared by smctxsendmsg and smcrxrecvmsg, unconditionally dereferences smc-conn.lnk: stringname, smc-conn.lnk-ibname conn-lnk is onl...

CVE-2026-52941

A flaw was found in the Linux kernel's net/smc module. An unprivileged local user could trigger a null pointer dereference by performing sendmsg or recvmsg operations on an SMC-D Shared Memory Communications - Direct socket while the smcmsgevent tracepoint is enabled. This can lead to a general...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: Tracing: Do not register unsupported perf events Synthetic events currently do not have a function to register perf events. This leads to calling the tracepoint register functions with a NULL function pointer, which triggers the...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: i40e: Fixed a preempt count leak in the napi poll tracepoint. Using getcpu in the tracepoint assignment causes an obvious preempt count leak, because nothing invokes putcpu to undo it. softirq: Huh, entered softirq 3 for NETRX...

CVE-2026-52941

In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid NULL deref of conn-lnk in smcmsgevent tracepoint The smcmsgevent tracepoint class, shared by smctxsendmsg and smcrxrecvmsg, unconditionally dereferences smc-conn.lnk: stringname, smc-conn.lnk-ibname conn-lnk is onl...

CVE-2026-52941

In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid NULL deref of conn-lnk in smcmsgevent tracepoint The smcmsgevent tracepoint class, shared by smctxsendmsg and smcrxrecvmsg, unconditionally dereferences smc-conn.lnk: stringname, smc-conn.lnk-ibname conn-lnk is onl...

UBUNTU-CVE-2026-52941

In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid NULL deref of conn-lnk in smcmsgevent tracepoint The smcmsgevent tracepoint class, shared by smctxsendmsg and smcrxrecvmsg, unconditionally dereferences smc-conn.lnk: stringname, smc-conn.lnk-ibname conn-lnk is onl...

CVE-2026-52941

Summary: CVE-2026-52941 affects the Linux kernel net/smc stack. The smc_msg_event tracepoint used by smc_tx_sendmsg/smc_rx_recvmsg dereferenced conn.lnk unconditionally, causing a NULL pointer dereference when conn.lnk is NULL on SMC-D, leading to a crash. The fix guards against !conn->lnk and...

EUVD-2026-38711

In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid NULL deref of conn-lnk in smcmsgevent tracepoint The smcmsgevent tracepoint class, shared by smctxsendmsg and smcrxrecvmsg, unconditionally dereferences smc-conn.lnk: stringname, smc-conn.lnk-ibname conn-lnk is onl...

CVE-2026-52941

In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid NULL deref of conn-lnk in smcmsgevent tracepoint The smcmsgevent tracepoint class, shared by smctxsendmsg and smcrxrecvmsg, unconditionally dereferences smc-conn.lnk: stringname, smc-conn.lnk-ibname conn-lnk is onl...

CVE-2026-52941 net/smc: avoid NULL deref of conn->lnk in smc_msg_event tracepoint

In the Linux kernel, the following vulnerability has been resolved: net/smc: avoid NULL deref of conn-lnk in smcmsgevent tracepoint The smcmsgevent tracepoint class, shared by smctxsendmsg and smcrxrecvmsg, unconditionally dereferences smc-conn.lnk: stringname, smc-conn.lnk-ibname conn-lnk is onl...