batman-adv: fix tp_meter counter underflow during shutdown

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batman-adv: tp_meter: avoid use of uninit sender vars

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CVE-2026-52931

A flaw was found in the batman-adv tpmeter module of the Linux kernel. A remote attacker could exploit this vulnerability by sending a specially crafted acknowledgment ACK packet to a node configured as a receiver in an ongoing tpmeter session. This could lead to the use of uninitialized sender...

CVE-2026-52919

A flaw was found in the batman-adv module of the Linux kernel. During the shutdown process of the tpmeter sender, an atomic counter can underflow due to multiple decrements. This can cause the sender kernel thread to loop indefinitely, leading to a use-after-free vulnerability if the associated...

CVE-2026-52919

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

UBUNTU-CVE-2026-52919

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

CVE-2026-52931

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid use of uninit sender vars batadvtprecvack and batadvtpstop are only valid for tpvars in the BATADVTPSENDER role. When called with a BATADVTPRECEIVER role, it proceeds to read sender-only members that we...

CVE-2026-52931 batman-adv: tp_meter: avoid use of uninit sender vars

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid use of uninit sender vars batadvtprecvack and batadvtpstop are only valid for tpvars in the BATADVTPSENDER role. When called with a BATADVTPRECEIVER role, it proceeds to read sender-only members that we...

CVE-2026-52931

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid use of uninit sender vars batadvtprecvack and batadvtpstop are only valid for tpvars in the BATADVTPSENDER role. When called with a BATADVTPRECEIVER role, it proceeds to read sender-only members that we...

EUVD-2026-38722

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

CVE-2026-52919 batman-adv: fix tp_meter counter underflow during shutdown

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

CVE-2026-52919

CVE-2026-52919 affects the batman-adv component in the Linux kernel. The root cause is an underflow of the atomic counter “sending” in batadv_tp_sender_shutdown(), which is decremented unconditionally and can become -1 when multiple code paths call it. A negative value causes the sender kthread t...

CVE-2026-52919

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

PT-2026-51712

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the batman-adv module where the batadv tp sender shutdown function unconditionally decrements the sending atomic counter. If this function is called multiple times...

Linux Distros Unpatched Vulnerability : CVE-2026-52931

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - batman-adv: tpmeter: avoid use of uninit sender vars batadvtprecvack and batadvtpstop are only valid for tpvars in the BATADVTPSENDER role. When called with a...

batman-adv: stop tp_meter sessions during mesh teardown

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SUSE CVE-2026-46206

In the Linux kernel, the following vulnerability has been resolved: batman-adv: reject new tpmeter sessions during teardown Prevent tpmeter from starting new sender or receiver sessions after meshstate has left BATADVMESHACTIVE...

SUSE CVE-2026-46208

In the Linux kernel, the following vulnerability has been resolved: batman-adv: stop tpmeter sessions during mesh teardown TP meter sessions remain linked on batpriv-tplist after the netlink request has already finished. When the mesh interface is removed, batadvmeshfree currently tears down the...

Linux Distros Unpatched Vulnerability : CVE-2026-46208

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - batman-adv: stop tpmeter sessions during mesh teardown TP meter sessions remain linked on batpriv-tplist after the netlink request has already finished. When th...

CVE-2026-46206

A flaw was found in the Linux kernel's batman-adv module, specifically in the tpmeter component. This vulnerability allows tpmeter to initiate new sender or receiver sessions even after the mesh state has exited BATADVMESHACTIVE. This improper state management could lead to unexpected behavior or...