K000163825: Linux kernel vulnerabilities CVE-2026-46110 and CVE-2026-46115

Security Advisory Description CVE-2026-46110 In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Prevent NULL deref when RX memory exhausted The CPU receives frames from the MAC through conventional DMA: the CPU allocates buffers for the MAC, then the MAC fills them a...

Linux Distros Unpatched Vulnerability : CVE-2026-98571

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: stmmac: clear stale buf-page after recycling on skb build failure In stmmacrx, when napibuildskb fails the descriptor page is recycled back to the page poo...

UBUNTU-CVE-2026-98571

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: clear stale buf-page after recycling on skb build failure In stmmacrx, when napibuildskb fails the descriptor page is recycled back to the page pool with pagepoolrecycledirect, but buf-page is left pointing at the...

DEBIAN-CVE-2026-98571

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: clear stale buf-page after recycling on skb build failure In stmmacrx, when napibuildskb fails the descriptor page is recycled back to the page pool with pagepoolrecycledirect, but buf-page is left pointing at the...

CVE-2026-98803

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix rx Scatter-Gather support When a received frame is larger than dmabufsz, the DMA scatters it across multiple RX descriptors rx Scatter-Gather. The secondary RX buffer secpage was only allocated and programmed whe...

CVE-2026-98571

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: clear stale buf-page after recycling on skb build failure In stmmacrx, when napibuildskb fails the descriptor page is recycled back to the page pool with pagepoolrecycledirect, but buf-page is left pointing at the...

UBUNTU-CVE-2026-98288

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix TSO header length truncation stmmactsoxmit stores the protocol header length returned by stmmactsoheadersize in a u8. stmmactsovalidpacket admits headers up to 1023 bytes, so a header longer than 255 bytes wraps...

CVE-2026-98288

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix TSO header length truncation stmmactsoxmit stores the protocol header length returned by stmmactsoheadersize in a u8. stmmactsovalidpacket admits headers up to 1023 bytes, so a header longer than 255 bytes wraps...

CVE-2026-98288 net: stmmac: fix TSO header length truncation

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix TSO header length truncation stmmactsoxmit stores the protocol header length returned by stmmactsoheadersize in a u8. stmmactsovalidpacket admits headers up to 1023 bytes, so a header longer than 255 bytes wraps...

Linux Distros Unpatched Vulnerability : CVE-2026-98288

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: stmmac: fix TSO header length truncation stmmactsoxmit stores the protocol header length returned by stmmactsoheadersize in a u8. stmmactsovalidpacket admi...

DEBIAN-CVE-2026-97953

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix TX descriptor availability check for TSO traffic stmmactsoxmit estimates the number of free TX descriptors required by a TSO skb as: skb-len - protohdrlen / TSOMAXBUFFSIZE + 1 which assumes the payload is split...

UBUNTU-CVE-2026-97953

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix TX descriptor availability check for TSO traffic stmmactsoxmit estimates the number of free TX descriptors required by a TSO skb as: skb-len - protohdrlen / TSOMAXBUFFSIZE + 1 which assumes the payload is split...

UBUNTU-CVE-2026-97963

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: initialize ptplock at probe time priv-ptplock is only initialized in stmmacptpregister, which runs during stmmacopen. However, the lock is also used while the interface is down and has never been opened:...

CVE-2026-98131 net: stmmac: fix dma mapping leak in stmmac_tso_xmit()

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix dma mapping leak in stmmactsoxmit In stmmactsoxmit, if the DMA mapping of an skb fragment fails, the frame is dropped but the DMA mappings already created for the linear part and for the fragments mapped before t...

CVE-2026-97963 net: stmmac: initialize ptp_lock at probe time

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: initialize ptplock at probe time priv-ptplock is only initialized in stmmacptpregister, which runs during stmmacopen. However, the lock is also used while the interface is down and has never been opened:...

CVE-2026-97963

The Linux kernel contains a vulnerability in the stmmac driver where the ptp_lock (an rwlock) is only initialized during __stmmac_open(). Because the lock is accessed by stmmac_get_time() during tc_taprio_configure() even when the interface is down and never opened, using the uninitialized lock r...

CVE-2026-97953 net: stmmac: fix TX descriptor availability check for TSO traffic

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix TX descriptor availability check for TSO traffic stmmactsoxmit estimates the number of free TX descriptors required by a TSO skb as: skb-len - protohdrlen / TSOMAXBUFFSIZE + 1 which assumes the payload is split...

CVE-2026-98131

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix dma mapping leak in stmmactsoxmit In stmmactsoxmit, if the DMA mapping of an skb fragment fails, the frame is dropped but the DMA mappings already created for the linear part and for the fragments mapped before t...

PT-2026-98627

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists where the ptp lock variable is only initialized during the stmmac open process via the stmmac ptp register function. This leads to undefined behavior because the lock is...

CVE-2026-97953: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix TX descriptor availability check for TSO traffic stmmactsoxmit estimates the number of free TX descriptors required by a TSO skb as: skb-len - protohdrlen / TSOMAXBUFFSIZE + 1 which assumes the payload is split...