Null pointer dereference

In the Linux kernel, the following vulnerability has been resolved: sfc: adjust efx-xdptxqueuecount with the real number of initialized queues efx-xdptxqueuecount is initially initialized to numpossiblecpus and is later used to allocate and traverse efx-xdptxqueues lookup array. However, we may e...

CVE-2021-46947

In the Linux kernel, the following vulnerability has been resolved: sfc: adjust efx-xdptxqueuecount with the real number of initialized queues efx-xdptxqueuecount is initially initialized to numpossiblecpus and is later used to allocate and traverse efx-xdptxqueues lookup array. However, we may e...

UBUNTU-CVE-2021-46949

In the Linux kernel, the following vulnerability has been resolved: sfc: farch: fix TX queue lookup in TX flush done handling We're starting from a TXQ instance number 'qid', not a TXQ type, so efxgettxqueue is inappropriate and could return NULL, leading to panics...

CVE-2021-46947 sfc: adjust efx->xdp_tx_queue_count with the real number of initialized queues

In the Linux kernel, the following vulnerability has been resolved: sfc: adjust efx-xdptxqueuecount with the real number of initialized queues efx-xdptxqueuecount is initially initialized to numpossiblecpus and is later used to allocate and traverse efx-xdptxqueues lookup array. However, we may e...

CVE-2021-46947

CVE-2021-46947 is a Linux kernel issue in the sfc (Solarflare) driver where efx->xdp_tx_queue_count can reflect too many uninitialized slots after probing, risking a NULL pointer dereference (e.g., when running ethtool -S). The root cause is that xdp_tx_queue_count starts at num_possible_cpus(...

CVE-2021-46947

In the Linux kernel, the following vulnerability has been resolved: sfc: adjust efx-xdptxqueuecount with the real number of initialized queues efx-xdptxqueuecount is initially initialized to numpossiblecpus and is later used to allocate and traverse efx-xdptxqueues lookup array. However, we may e...

kernel: sfc: fix considering that all channels have TX queues

In the Linux kernel, the following vulnerability has been resolved: sfc: fix considering that all channels have TX queues Normally, all channels have RX and TX queues, but this is not true if modparam efxseparatetxchannels=1 is used. In that cases, some channels only have RX queues and others onl...

PT-2022-34844 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v5.10.146 Description: The issue is related to a null pointer dereference in the efx hard start xmit function. This problem was introduced in version v5.10 and is fixed in version v5.10.146. The actual impact an...

PT-2024-8453 · Linux +3 · Linux Kernel +3

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The issue is related to a null pointer dereference in the efx hard start xmit function. This can occur when trying to get the channel from the tx queue variable, which is wrong because...

PT-2024-8454 · Linux +3 · Linux Kernel +3

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The issue is related to a NULL pointer dereference in the Linux kernel's sfc component when using legacy interrupts. In legacy interrupt mode, the tx channel offset was hardcoded to 1,...

PT-2024-11769

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue is related to a null pointer dereference in the efx hard start xmit function within the sfc/siena component of the Linux kernel. This could potentially lead to a null pointer...

UVI-2021-1000064 sfc: adjust efx->xdp_tx_queue_count with the real number of initialized queues

sfc: adjust efx-xdptxqueuecount with the real number of initialized queues This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.3 by commit...