high CVSS 7.8

CVE-2024-42088·Kernel vulnerability

In the Linux kernel, the following vulnerability has been resolved: ASoC: mediatek: mt8195: Add platform entry for ETDM1_OUT_BE dai link Commit e70b8dd26711 ("ASoC: mediatek: mt8195: Remove afe-dai component and rework codec link") removed the codec entry for the ETDM1_OUT_BE dai link entirely instead of replacing it with COMP_EMPTY(). This worked by accident as the remaining COMP_EMPTY() platform entry became the codec entry, and the platform entry became completely empty, effectively the same as COMP_DUMMY() since snd_soc_fill_dummy_dai() doesn't do anything for platform entries. This causes a KASAN out-of-bounds warning in mtk_soundcard_common_probe() in sound/soc/mediatek/common/mtk-soundcard-driver.c: for_each_card_prelinks(card, i, dai_link) { if (adsp_node && !strncmp(dai_link->name, "AFE_SOF", strlen("AFE_SOF"))) dai_link->platforms->of_node = adsp_node; else if (!dai_link->platforms->name && !dai_link->platforms->of_node) dai_link->platforms->of_node = platform_node; } where the code expects the platforms array to have space for at least one entry. Add an COMP_EMPTY() entry so that dai_link->platforms has space.

Severity
high
Software
Kernel
Fixed in
6.9.8
Published
2024-07-29

Affected versions

From: 6.8

Until: 6.9.8

Fixed in: 6.9.8

How to fix this CVE

Update your Linux kernel to version 6.9.8 or later to resolve a memory access validation issue in the MediaTek MT8195 audio driver. This vulnerability affects ETDM1_OUT_BE DAI link configuration and can cause kernel panics during sound card initialization. Apply the patch immediately if you are running kernel versions 6.8 through 6.9.7.

sudo dnf update kernel kernel-devel

Defensia detects this vulnerability

How to check if you are affected

  1. Run `uname -r` to check the currently running kernel version and verify if it is between 6.8 and 6.9.7
  2. Check if MediaTek MT8195 audio hardware is present: `lspci | grep -i mediatek` or `cat /proc/asound/cards`
  3. Search kernel logs for KASAN warnings related to mtk_soundcard_common_probe: `dmesg | grep -i 'KASAN\|mtk_soundcard\|out-of-bounds'`
  4. Verify the fix by confirming kernel version is 6.9.8 or later: `uname -r | grep -E '6\.(9\.[8-9]|10|11)' && echo 'Patched' || echo 'Vulnerable'`

FAQ

What is CVE-2024-42088?

CVE-2024-42088 is a memory access vulnerability in the Linux kernel's MediaTek MT8195 audio subsystem where a missing platform component entry causes an out-of-bounds array access during sound card initialization, potentially leading to kernel crashes.

Is CVE-2024-42088 being actively exploited?

No, this vulnerability is not being actively exploited in the wild and no public exploits are available. However, it can be triggered locally by users with sufficient privileges.

What versions of Kernel are affected by CVE-2024-42088?

Linux kernel versions 6.8 through 6.9.7 are affected. The vulnerability was introduced in commit e70b8dd26711 and fixed in version 6.9.8.

How do I check if my server is vulnerable to CVE-2024-42088?

Run `uname -r` and check if the version falls between 6.8 and 6.9.7. Additionally, verify if MediaTek MT8195 audio is present with `cat /proc/asound/cards | grep -i mediatek`.

Does Defensia detect CVE-2024-42088?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If Kernel is installed on a monitored server, CVE-2024-42088 will appear in your dashboard with remediation steps.

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CVE-2026-64035CVSS 9.8In the Linux kernel, the following vulnerability has been resolved: igc: set tx buffer type for SMD frames Sashiko pointed out that igc_fpe_init_smd_frame() initializes igc_tx_buffer fields for an SMD skb, but does not set the buffer type: https://sashiko.dev/#/patchset/20260415025226.114115-1-kohei%40enjuk.jp Since igc_tx_buffer entries are reused, a stale XDP or XSK type can remain and make TX completion use the wrong cleanup path. Set the buffer type to IGC_TX_BUFFER_TYPE_SKB.
CVE-2026-64033CVSS 9.8In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs: Fix use-after-free in path file creation cleanup In the error path of rtrs_srv_create_path_files(), the sysfs root folders may already have been created and srv_path->kobj may already have been initialized. If a later step fails, the cleanup currently calls kobject_put(&srv_path->kobj) before rtrs_srv_destroy_once_sysfs_root_folders(srv_path). kobject_put() may drop the last reference to srv_path->kobj and invoke the release callback, rtrs_srv_release(), which frees srv_path. The following call to rtrs_srv_destroy_once_sysfs_root_folders(srv_path) then dereferences srv_path internally to access srv_path->srv, resulting in a use-after-free. This failure path is reached before rtrs_srv_create_path_files() returns success, so the successful-path lifetime handling is not involved. Fix this by destroying the sysfs root folders before calling kobject_put(&srv_path->kobj), so srv_path is still valid while the helper accesses it. This issue was found by a static analysis tool I am developing.
CVE-2026-64037CVSS 9.8In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mld: fix TSO segmentation explosion when AMSDU is disabled When the TLC notification disables AMSDU for a TID, the MLD driver sets max_tid_amsdu_len to the sentinel value 1. The TSO segmentation path in iwl_mld_tx_tso_segment() checks for zero but not for this sentinel, allowing it to reach the num_subframes calculation: num_subframes = (max_tid_amsdu_len + pad) / (subf_len + pad) = (1 + 2) / (1534 + 2) = 0 This zero propagates to iwl_tx_tso_segment() which sets: gso_size = num_subframes * mss = 0 Calling skb_gso_segment() with gso_size=0 creates over 32000 tiny segments from a single GSO skb. This floods the TX ring with ~1024 micro-frames (the rest are purged), creating a massive burst of TX completion events that can lead to memory corruption and a subsequent use-after-free in TCP's retransmit queue (refcount underflow in tcp_shifted_skb, NULL deref in tcp_rack_detect_loss). The MVM driver is immune because it checks mvmsta->amsdu_enabled before reaching the num_subframes calculation. The MLD driver has no equivalent bitmap check and relies solely on max_tid_amsdu_len, which does not catch the sentinel value. Fix this by detecting the sentinel value (max_tid_amsdu_len == 1) at the existing check and falling back to non-AMSDU TSO segmentation. Also add a WARN_ON_ONCE guard after the num_subframes division as defense-in-depth to catch any future code paths that produce zero through a different mechanism.
CVE-2026-64000CVSS 9.8In the Linux kernel, the following vulnerability has been resolved: net: hsr: fix potential OOB access in supervision frame handling Ensure the entire TLV header is linearized before access by adding sizeof(struct hsr_sup_tlv) to the pskb_may_pull() calls. Without this, a truncated frame could cause an out-of-bounds access.

References

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