CVE-2026-63836

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid divide-by-zero for deccwnd The cwnd is always MSS = cwnd = 0x20000000. But the calculation in batadvtpupdatecwnd assumes unsigned 32 bit arithmetics. mss 8 2 / cwnd 8 In case cwnd is actually 0x20000000...

CVE-2026-63827

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix use-after-free in rawdata dedup loop aareplaceprofiles walks ns-rawdatalist to dedup the incoming policy blob against entries already attached to existing profiles. Per the kernel-doc on struct aaloaddata, list...

CVE-2026-53392

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count fflayoutalloclseg decodes the filehandle-version array count from the flexfiles layout body. The value is used as the count for kzallocobjs, and the current code only rejects...

CVE-2026-53391

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: reject zero-length raddr in nfs4decodempdsaddr nfs4decodempdsaddr decodes the rnetid and raddr opaques of a netaddr4 from a GETDEVICEINFO multipath-DS body, then immediately calls strrchrbuf, '.' to locate the port...

CVE-2026-63836

The CVE-2026-63836 issue is in batman-adv tp_meter within the Linux kernel, caused by a 32-bit arithmetic overflow in batadv_tp_update_cwnd() that can yield a divide-by-zero when cwnd reaches 0x20000000. The correct calculation should be (mss ** 2) * 8 / cwnd to avoid overflow, preserving the 8x ...

CVE-2026-63836

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid divide-by-zero for deccwnd The cwnd is always MSS = cwnd = 0x20000000. But the calculation in batadvtpupdatecwnd assumes unsigned 32 bit arithmetics. mss 8 2 / cwnd 8 In case cwnd is actually 0x20000000...

CVE-2026-63836 batman-adv: tp_meter: avoid divide-by-zero for dec_cwnd

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid divide-by-zero for deccwnd The cwnd is always MSS = cwnd = 0x20000000. But the calculation in batadvtpupdatecwnd assumes unsigned 32 bit arithmetics. mss 8 2 / cwnd 8 In case cwnd is actually 0x20000000...

EUVD-2026-45502

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid divide-by-zero for deccwnd The cwnd is always MSS = cwnd = 0x20000000. But the calculation in batadvtpupdatecwnd assumes unsigned 32 bit arithmetics. mss 8 2 / cwnd 8 In case cwnd is actually 0x20000000...

CVE-2026-63836 batman-adv: tp_meter: avoid divide-by-zero for dec_cwnd

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid divide-by-zero for deccwnd The cwnd is always MSS = cwnd = 0x20000000. But the calculation in batadvtpupdatecwnd assumes unsigned 32 bit arithmetics. mss 8 2 / cwnd 8 In case cwnd is actually 0x20000000...

CVE-2026-63836

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid divide-by-zero for deccwnd The cwnd is always MSS = cwnd = 0x20000000. But the calculation in batadvtpupdatecwnd assumes unsigned 32 bit arithmetics. mss 8 2 / cwnd 8 In case cwnd is actually 0x20000000...

CVE-2026-63827 apparmor: fix use-after-free in rawdata dedup loop

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix use-after-free in rawdata dedup loop aareplaceprofiles walks ns-rawdatalist to dedup the incoming policy blob against entries already attached to existing profiles. Per the kernel-doc on struct aaloaddata, list...

CVE-2026-63827 apparmor: fix use-after-free in rawdata dedup loop

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix use-after-free in rawdata dedup loop aareplaceprofiles walks ns-rawdatalist to dedup the incoming policy blob against entries already attached to existing profiles. Per the kernel-doc on struct aaloaddata, list...

CVE-2026-63827

Root cause: Linux kernel AppArmor uses a use-after-free in the rawdata dedup loop (aa_replace_profiles) due to unsafe refcount handling when traversing ns->rawdata_list. The dedup path calls aa_get_profile_loaddata() which has plain kref_get() semantics, allowing a zero counter to be dereferen...

CVE-2026-53392

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count fflayoutalloclseg decodes the filehandle-version array count from the flexfiles layout body. The value is used as the count for kzallocobjs, and the current code only rejects...

CVE-2026-53392

CVE-2026-53392 affects the Linux kernel’s NFSv4/flexfiles path. The flaw arises in ff_layout_alloc_lseg(), which decodes the filehandle-version array count and uses it to allocate with kzalloc_objs(). A zero count can yield ZERO_SIZE_PTR and get stored in dss_info->fh_versions, while later fle...

CVE-2026-53392

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count fflayoutalloclseg decodes the filehandle-version array count from the flexfiles layout body. The value is used as the count for kzallocobjs, and the current code only rejects...

CVE-2026-53392 NFSv4/flexfiles: reject zero filehandle version count

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count fflayoutalloclseg decodes the filehandle-version array count from the flexfiles layout body. The value is used as the count for kzallocobjs, and the current code only rejects...

EUVD-2026-45514

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count fflayoutalloclseg decodes the filehandle-version array count from the flexfiles layout body. The value is used as the count for kzallocobjs, and the current code only rejects...

CVE-2026-53392 NFSv4/flexfiles: reject zero filehandle version count

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count fflayoutalloclseg decodes the filehandle-version array count from the flexfiles layout body. The value is used as the count for kzallocobjs, and the current code only rejects...

CVE-2026-53391

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: reject zero-length raddr in nfs4decodempdsaddr nfs4decodempdsaddr decodes the rnetid and raddr opaques of a netaddr4 from a GETDEVICEINFO multipath-DS body, then immediately calls strrchrbuf, '.' to locate the port...