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certfr-2025-avi-0047 — De multiples vulnérabilités ont été découvertes dans les produits SUSE. Certaines d'entre elles permettent à un attaqua…

certfr-2025-avi-0047

fkie_cve-2024-50018

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

GHSA-4h38-c385-vwjx

In the Linux kernel, the following vulnerability has been resolved:

net: napi: Prevent overflow of napi_defer_hard_irqs

In commit 6f8b12d661d0 ("net: napi: add hard irqs deferral feature") napi_defer_irqs was added to net_device and napi_defer_irqs_count was added to napi_struct, both as type int.

This value never goes below zero, so there is not reason for it to be a signed int. Change the type for both from int to u32, and add an overflow check to sysfs to limit the value to S32_MAX.

The limit of S32_MAX was chosen because the practical limit before this patch was S32_MAX (anything larger was an overflow) and thus there are no behavioral changes introduced. If the extra bit is needed in the future, the limit can be raised.

Before this patch:

$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs' $ cat /sys/class/net/eth4/napi_defer_hard_irqs -2147483647

After this patch:

$ sudo bash -c 'echo 2147483649 > /sys/class/net/eth4/napi_defer_hard_irqs' bash: line 0: echo: write error: Numerical result out of range

Similarly, /sys/class/net/XXXXX/tx_queue_len is defined as unsigned:

include/linux/netdevice.h: unsigned int tx_queue_len;

And has an overflow check:

dev_change_tx_queue_len(..., unsigned long new_len):

if (new_len != (unsigned int)new_len) return -ERANGE;

openSUSE-SU-2024:14500-1 — kernel-devel-6.11.8-1.1 on GA media

kernel-devel-6.11.8-1.1 on GA media

SUSE-SU-2025:0117-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2024-50018

Affected: Ubuntu:Pro:14.04:LTS: linux, Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:Pro:16.04:LTS: linux, Ubuntu:Pro:16.04:LTS: linux-aws, Ubuntu:Pro:16.04:LTS: linux-aws-hwe, Ubuntu:Pro:16.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-gcp, Ubuntu:Pro:16.04:LTS: linux-hwe and 95 more

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

WID-SEC-W-2024-3251 — Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder andere, nicht näher bekannte Auswirkungen zu erzielen..